Siemens SENTRON Fuse 3NA3 3NA6 3NH3 3NX2 3NG1 3NA6 3ND1 3NC3 3NE1 3NE3 3NE4 3NE8
Siemens SENTRON Fuse 3NA3 3NA6 3NH3 3NX2 3NG1 3NA6 3ND1 3NC3 3NE1 3NE3 3NE4 3NE8
Configuration Manual · 2012
SENTRON
Answers for infrastructure.
PH_05_2012_umschlag_en.indd 1 PH_05_2012_umschlag_en.indd 1 13.06.2012 15:03:30 13.06.2012 15:03:30
© Siemens AG 2012
© Siemens AG 2012
Siemens 2012
Fuse Systems
2 Introduction
7 NEOZED fuse systems, 5SE2
14 DIAZED fuse systems,
5SA, 5SB, 5SC, 5SD
Cylindrical fuse systems
24 Cylindrical fuse links and cylindrical
fuse holders, 3NW6, 3NW7, 3NW8
33 Compact fuse holders for motor
starter combinations, 3NW7
36 Class CC fuse systems,
3NW7, 3NW1, 3NW2, 3NW3
39 Busbar systems, 5ST, 5SH
LV HRC fuse systems
43 LV HRC fuse links, 3NA, 3ND
46 LV HRC signal detectors, 3NX1
47 LV HRC fuse bases and accessories,
3NH3, 3NG1, 3NX
SITOR semiconductor fuses
74 LV HRC design, 3NC, 3NE
122 Cylindrical fuse design,
3NC1, 3NC2
133 NEOZED and DIAZED design,
SILIZED, 3SE1, 5SD4
137 Configuration
Photovoltaic fuses
149 PV cylindrical fuses,
3NW7 0, 3NW6 0
154 PV cummulative fuses
© Siemens AG 2012
Fuse Systems
Introduction
2 Siemens · 2012
■ Overview
Devices Page Application Standards Used in
NEOZED fuse systems, 5SE2 7 MINIZED switch disconnectors, bases,
fuse links from 2 A to 63A of operational
class gG and accessories. Everything
you need for a complete system.
Fuse system:
IEC 60269-3;
DIN VDE 0636-3;
Safety switching
devices
IEC/EN 60947-3
DIN VDE 0638;
DIN VDE 0660-107
✓ ✓ ✓
DIAZED fuse systems,
5SA, 5SB, 5SC, 5SD
14 Fuse links from 2 A to 100 A in various
operational classes, base versions with
classic screw base connections. A
widely used fuse system.
IEC 60269-3;
DIN VDE 0635;
DIN VDE 0636-3;
CEE 16
✓ ✓ ✓
Cylindrical fuse systems
Cylindrical fuse links and
cylindrical fuse holders,
3NW6, 3NW7, 3NW8
24 Line protection or protection of
switching devices.
The fuse holders with touch protection
ensure the safe "no-voltage"
replacement of fuse links.
Auxiliary switches can be retrofitted
IEC 60269-1, -2, -3;
NF C 60-200;
NF C 63-210, -211;
NBN C 63269-2,
CEI 32-4, -12
✓ ✓ ✓
Compact fuse holders for motor
starter combinations, 3NW7
33 For installing fused loaded motor starter
combinations.
IEC 60947-4 ✓ -- ✓
Class CC fuse systems,
3NW7, 3NW1, 3NW2, 3NW3
36 These comply with American standard
and have UL and SCA approval, for
customers exporting OEM products
and mechanical engineers.
Modern design with touch protection
acc. to BGV A3 for use in "branch
circuit protection".
Fuse holders: UL 512;
CSA 22.2
Fuse links: UL 248-4;
CSA 22.2
✓ ✓ ✓
Busbar systems, 5ST, 5SH 39 Busbars for NEOZED fuse bases,
NEOZED fuse disconnectors, MINIZED
switch disconnectors, DIAZED fuse
systems and cylindrical fuse systems.
EN 60439-1
(VDE 0660-500)
✓ ✓ ✓
LV10-1_THB_05_EN.book Seite 2 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Non-residential
buildings
Residential
buildings
Industry
Fuse Systems
Introduction
3 Siemens · 2012
Devices Page Application Standards Used in
LV HRC fuse systems
LV HRC fuse links, 3NA, 3ND 43 Fuse links from 2 A to 1250 A for
selective line protection and plant
protection in non-residential buildings,
industry and power supply companies.
IEC 60269-1, -2;
EN 60269-1;
DIN VDE 0636-2
✓ ✓ ✓
LV HRC signal detectors, 3NX1 46 Signal detectors for when a fuse is
tripped on all LV HRC fuse links with
combination or front indicators with
non-insulated grip lugs.
Plus the comprehensive accessory
range required for NH fuse systems.
✓ ✓ ✓
LV HRC fuse bases and accessories,
3NH3, 3NG1, 3NX
47 Fuse bases for screw or snap-on
mounting onto standard mounting rails,
available as 1-pole or 3-pole version
IEC 60269-1, -2;
EN 60269-1;
DIN VDE 0636-2
✓ ✓ ✓
SITOR semiconductor fuses
In LV HRC design, 3NC, 3NE 74 Fuse links in LV HRC design and a
huge variety of models support a wide
range of applications from 500 V to
1500 V and 150 A to 1600 A.
Fuses with slotted blade contacts, bolton links or female thread and special
designs.
-- -- ✓
In cylindrical fuse design,
3NC1, 3NC2
122 Fuse links, fuse holders – usable as
fuse switch disconnectors and fuse
bases up to 600/690 V AC and
400/700 V DC from 1 A to 100 A in the
sizes10 mm × 38 mm, 14 mm × 51 mm
and 22 mm × 58 mm.
-- -- ✓
In NEOZED and DIAZED design,
SILIZED, 3SE1, 5SD4
133 NEOZED fuse links for 400 V AC and
250 V DC and DIAZED for 500 V AC
and 500 V DC.
-- -- ✓
Photovoltaic fuses
PV cylindrical fuses,
3NW7 0, 3NW6 0
149 Fuses with a rated voltage of 1000 V
DC and gPV operational class for the
protection of photovoltaic modules,
their connecting cables and other
components.
IEC 60269-6 ✓ ✓ ✓
PV cumulative fuses 151 Fuses with a rated voltage of
1000 V DC, a rated current of 63 A to
400 A and gPV operational class for the
protection of connecting cables and
other components.
IEC 60269-6 ✓ ✓ ✓
LV10-1_THB_05_EN.book Seite 3 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Non-residential
buildings
Residential
buildings
Industry
Fuse Systems
Introduction
4 Siemens · 2012
■ Overview
Rated voltage Un
The rated voltage is the designated voltage of the fuse and is
used to determine its test conditions and operational voltage
limits.
For LV HRC and SITOR fuse links, the rated voltage is always the
r.m.s. value of an AC voltage.
In the case of NEOZED and DIAZED fuse links, a distinction is
made between AC and DC voltage values.
Rated current In
The rated current of a fuse link is the designated current of the
fuse link and is the current up to which it can be continuously
loaded under prescribed conditions without adverse affects.
Rated frequency
The rated frequency is the frequency for which the fuse link is
rated with regard to power dissipation, current, voltage,
characteristic curve and breaking capacity.
Selectivity
Several fuses are usually connected in series in one system. And
when things get serious, selectivity ensures that only the faulty
electrical circuit of a system is switched off and not the entire
operational process.
Siemens fuses of operational class gG, at an operational voltage
of up to 400 V AC and a ratio of 1:1.25, are interselective, i.e.
from rated current level to rated current level. This is achieved by
means of the considerably smaller spread of ± 5% of the
time/current characteristics, which far exceeds the demand for
a ratio of 1:1.6 specified in the standard.
It is therefore possible to use smaller conductor cross-sections
due to the lower rated currents.
Breaking capacity
The rated breaking capacity is the highest prospective shortcircuit current lp that the fuse link can blow under prescribed
conditions.
A key feature of these fuses is their high rated breaking capacity
with the smallest footprint. The basic demands and circuit data
for tests – voltage, power factor, actuating angle etc.– are
specified in both national (DIN VDE 0636) and international
(IEC 60269) regulations.
However, for a constant failsafe breaking capacity, from the
smallest non-permissible overload current through to the highest
breaking current, a number of quality characteristics need to be
taken into account when designing and manufacturing fuse
links. These include the design of the fuse element with regard
to dimensions and punch dimension and its position in the fuse
body, as well as its compressive strength and the thermal
resistance of the body. The chemical purity, particle size and the
density of the quartz sand also play a key role.
The rated breaking capacity for AC voltage for NEOZED- and
the majority of DIAZED fuses - is 50 kA, and in the case of our
NH fuse systems, it is even 120 kA. The various type ranges of
SITOR fuses have different switching capacities ranging from
50 to 100 kA.
.
Faster arcing and precise arc quenching are the requirements for a
reliable breaking capacity.
Operational classes
Fuses are categorized according to function and operational
classes. The first letter defines the function class and the second
the object to be protected:
1st letter
a = Partial range protection
(accompanied fuses):
Fuse links that carry currents at least up to their rated current
and can switch currents above a specific multiple of their rated
current up to their rated breaking current.
g = Full range protection
(general purpose fuses):
Fuse links that can continuously carry currents up to at least their
specified rated current and can switch currents from the
smallest melting current through to the breaking current.
Overload and short-circuit protection.
2nd letter
G = Cable and line protection
(general applications)
M = Switching device protection in motor circuits
(for protection of motor circuits)
R, S= Semiconductor protection/thyristor protection
(for protection of rectifiers)
L = Cable and line protection
(in acc. with the old, no longer valid DIN VDE)
B = Mine equipment protection
Tr = Transformer protection
The designations "slow" and "quick" still apply for DIAZED fuses.
These are defined in IEC/CEE/DIN VDE.
In the case of "quick" characteristics, the fuse blows in the
breaking range faster than those of the gG operational class.
In the case of DIAZED fuse links for DC railway network
protection, the "slow" characteristic is particularly suitable for
switching off direct currents with greater inductance. Both
characteristics are also suitable for the protection of cables and
lines.
Full range fuses (gG, gR, quick, slow) reliably break the current
in the event of non-permissible overload and short-circuit
currents.
Partial range fuses (aM, aR) exclusively serve short-circuit
protection.
LV10-1_THB_05_EN.book Seite 4 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
Introduction
5 Siemens · 2012
The following operational classes are included in the product
range:
gG (DIN VDE/IEC) = Full range cable and line protection
aM (DIN VFE/IEC) = Partial ranges switching device
protection
aR (DIN VDE/IEC) = Partial range semiconductor protection
gR (DIN VDE/IEC) = Full range semiconductor protection
gS (DIN VDE/IEC) = Full range semiconductor protection and
cable and line protection
quick (DIN VDE/IEC/CEE) = Full range cable and
line protection
slow (DIN VDE) = Full range cable and line protection
Characteristic curves (time/current characteristic curves)
The time/current characteristic curve specifies the virtual time
(e.g. the melting time) as a function of the prospective current
under specific operating conditions.
Melting times of fuse links are shown in the time/current
diagrams with logarithmic scale and depending on their
currents. The melting time characteristic curve runs from the
smallest melting current, which just about melts the fuse
element, asymptotic to the I2t lines of the same joule value in the
range of the higher short-circuit currents, which specifies the
constant melting heat value I2t. To avoid overcomplication, the
time/current characteristics diagrams omit the I2t lines (c).
General representation of the time/current characteristic curve of a fuse
link of gL/gG operational class
Imin: Smallest melting current
a: Melting time/current characteristic
b: OFF time characteristic curve
c: I2t line
The shape of the characteristic curve depends on the outward
heat transfer from the fuse element. DIN VDE 0636 specifies
tolerance-dependent time/current ranges within which the
characteristic curves of the fuse must lie. Deviations of ±10 %
are permissible in the direction of the current axis. With Siemens
LV HRC fuse links of gG operational class, the deviations work
out at less than ±5 %, a mark of our outstanding production
accuracy. For currents up to approx. 20 In, the melting timecurrent characteristic curves are the same as the OFF-time
characteristic curves. In the case of higher short-circuit currents,
the two characteristic curves move apart, influenced by the
respective arc quenching time.
The difference between both lines (= arc quenching time) also
depends on the power factor, the operational voltage and the
breaking current.
The Siemens characteristic curves show the mean virtual
melting time characteristic curves recorded at an ambient
temperature of (20 ±5) °C. They do not apply to preloaded fuse
links.
Virtual time tv
The virtual time is the time span calculated when a I2t value is
divided by the square of the prospective current:
The time/current characteristic curve specifies the prospective
current Ip and the virtual melting time tvs.
Prospective short-circuit current Ip
The prospective short-circuit current is the r.m.s. value of the
line-frequency AC component, or the value of the direct current
to be expected in the event of a short-circuit occurring after the
fuse, were the fuse to be replaced by a component of negligible
impedance.
Let-through current characteristic curves
The let-through current characteristic curve specifies the value
of the let-through current at 50 Hz as a function of the
prospective current.
The let-through current Ic is the maximum instantaneous value of
the current reached during a switching operation of the fuse.
The fuse element of the fuse links melts so quickly at very high
currents that the surge short-circuit current Ip is prevented from
occurring. The highest instantaneous value of the current
reached during the shutdown cycle is called the let-through
current Ic. The current limitations are specified in the current
limiting diagrams, otherwise known as let-through current
diagrams.
Oscillograph of a short-circuit current shutdown through a fuse link
10 10 10 10 [A]
10
10
10
[s]
a b c
min
951
1 2 34
t tv i 2 ∫ dt Ip2 = ------------
Pc
s L
U t t t
t
c: Maximum let-through current
ts: Pre-arcing time
tL: Arcing time
P: Peak short-circuit current
Us: Arc voltage
LV10-1_THB_05_EN.book Seite 5 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
I201_06996a
I201_06997b
Fuse Systems
Introduction
6 Siemens · 2012
Current limitation
As well as a failsafe rated breaking capacity, the current-limiting
effect of a fuse link is of key importance for the cost effectiveness
of a system. In the event of short-circuit breaking by a fuse, the
breaking current continues to flow through the network until the
fuse link is switched off. However, the breaking current is limited
by the system impedance.
The simultaneous melting of all the bottlenecks of a fuse element
produce a sequence of tiny partial arcs that ensure a fast
breaking operation with strong current limiting. The current
limitation is also strongly influenced by the production quality of
the fuse - which in the case of Siemens fuses is extremely high.
For example, an LV HRC fuse link, size 2 (224 A) limits a breaking
current with a possible r.m.s. value of approximately 50 kA to a
let-through current with a peak value of approx. 18 kA. This
strong current limitation provides constant protection for the
system against excessive loads.
Current limitation diagram
Let-through current diagram of LV HRC fuse links, size 00
Operational class gL/gG
Rated currents, 6 A, 10 A, 50 A, 100 A
Legend
tvs = Virtual melting time
Ic = Max. let-through current
Ieff= R.m.s. value of the prospective short-circuit current
I2ts= Melting I2t value
I2ta= Breaking I2tvalue
In = Rated current
Pv = Rated power dissipation
Δϑ= Temperature rise
kA = Correction factor for I2t value
Uw= Recovery voltage
Ûs = Peak arc voltage
ip = Peak short-circuit current
$ = Peak short-circuit current with largest DC component
% = Peak short-circuit current without DC component
U = Voltage
i = Current
ts = Melting time
tL = Arc quenching time
Rated power dissipation
Rated power dissipation is the power loss during the load of a
fuse link with its rated current under prescribed conditions.
The cost effectiveness of a fuse depends largely on the rated
power dissipation (power loss). This should be as low as
possible and have low self-heating. However, when assessing
the power loss of a fuse, it must also be taken into account that
there is a physical dependence between the rated breaking
capacity and the rated power dissipation. On the one hand, fuse
elements need to be thick in order to achieve the lowest possible
resistance value, on the other, a high rated breaking capacity
requires the thinnest possible fuse elements in order to achieve
reliable arc quenching.
Siemens fuses have the lowest possible rated power dissipation
while also providing the highest possible load breaking
reliability.
These values lie far below the limit values specified in the
regulations. This means low temperature rises, reliable breaking
capacity and high cost effectiveness.
I2t value
The I2t value (joule integral) is the integral of the current squared
over a specific time interval:
Specifies the I2t values for the melting process (I2ts) and for the
shutdown cycle (I2tA, - sum of melting and quenching I2t value).
The melting I2t value, also known as the total I2t value or
breaking I2t value, is particularly important when dimensioning
SITOR fuses for semiconductor protection. This value depends
on the voltage and is specified with the rated voltage.
Peak arc voltage Ûs
The peak arc voltage is the highest value of the voltage that
occurs at the contacts of the fuse link during the arc quenching
time.
Residual value factor RW
The residual value factor is a reduction factor for determining the
permissible load period of the fuse link with currents that exceed
the permissible load current In' (see rated current In). This factor
is applied when dimensioning SITOR fuses for semiconductor
protection.
Varying load factor WL
The varying load factor is a reduction factor for the rated current
with varying load states. This factor is applied when
dimensioning SITOR fuses for semiconductor protection.
Recovery voltage Uw
The recovery voltage (r.m.s. value) is the voltage that occurs at
the contacts of a fuse link after the power is cut off.
100 A
50 A
10 A
6 A
c
eff
I2
t i 2dt t0t1 = ∫
LV10-1_THB_05_EN.book Seite 6 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
I201_06998a
Fuse Systems
NEOZED Fuse Systems
NEOZED fuse links, 5SE2
7 Siemens · 2012
■ Overview
The NEOZED fuse system is primarily used in distribution
technology and industrial switchgear assemblies. The system is
easy to use and is also approved for domestic installation.
The MINIZED switch disconnectors are primarily used in
switchgear assemblies and control engineering. They are
approved for switching loads as well as for safe switching in the
event of short circuits. The MINIZED D02 is also suitable for use
in the precounter sector in household applications in
compliance with the recommendations of the VDEW according
to TAB 2007.
Due to its small footprint, the MINIZED D01 fuse switch
disconnector is primarily used in control engineering.
The NEOZED fuse bases are the most cost-effective solution for
the application of NEOZED fuses. All NEOZED bases must be
fed from the bottom to ensure that the threaded ring is insulated
during removal of the fuse link. The terminals of the NEOZED
bases are available in different versions and designs to support
the various installation methods.
© Siemens AG 2012
Fuse Systems
NEOZED Fuse Systems
NEOZED fuse links, 5SE2
8 Siemens · 2012
■Technical specifications
NEOZED fuse links
5SE2
Standards IEC 60269-3; DIN VDE 0636-3
Operational class gG
Rated voltage Un V AC 400
V DC 250
Rated current In A 2 ... 100
Rated breaking capacity kA AC 50
kA DC 8
Non-interchangeability Using adapter sleeves
Resistance to climate °C up to 45 at 95 % rel. humidity
Ambient temperature °C -5 ... +40, humidity 90 % at 20
MINIZED
switch
disconnectors
MINIZED fuse
switch
disconnectors
Fuse bases,
made of ceramic
Comfort
bases
Fuse bases
D02
5SG7 1
D01
5SG7 6
D01
5SG1 5
5SG5 5
D02
5SG1 6
5SG5 6
D03
5SG1 8
D01/02
5SG1 .01
5SG5 .01
5SG1 .30
5SG1 .31
5SG5 .30
Standards DIN VDE 0638;
DIN VDE 0660-107
IEC 60269-3; DIN VDE 0636-3
IEC/EN 60947-3
Main switch characteristic
EN 60204-1
Yes -- --
Insulation characteristic
EN 60664-1
Yes -- --
Rated voltage Un V AC 230/400, 240/415 400
• 1P V DC 65 48 250
• 2P in series V DC 130 110 250
Rated current In A 63 16 16 63 100 16/63 16/63
Rated insulation voltage V AC 500 400 --
Rated impulse withstand voltage kV AC 6 2.5 --
Overvoltage category 4 -- --
Utilization category acc. to VDE 0638
• AC-22 A 63 16 --
Utilization category acc. to EN 60947-3
• AC-22 B A 63 16 --
• AC-23 B A 35 -- --
• DC-22 B A 63 -- --
Sealable
when switched on
Yes Yes, with sealable screw caps
Mounting position Any, but preferably vertical
Reduction factor of In with 18 pole
• Side-by-side mounting 0.9 --
• On top of one another, with vertical standard
mounting rail
0.87 --
Degree of protection acc. to IEC 60529 IP20, with connected conductors
Terminals
with touch protection acc. to BGV A3
Yes No Yes
Ambient temperature °C -5 ... +40, humidity 90 % at 20
Terminal versions -- -- B K, S K/S -- --
Conductor cross-sections
• Solid and stranded mm2 1.5 ... 35 1.5 ... 16 1.5 ... 4 1.5 ... 25 10 ... 50 0.75 ... 35 1.5 ... 35
• Flexible, with end sleeve mm2 1.5 ... 35 1.5 1.5 1.5 10 -- --
• Finely stranded, with end sleeve mm2 -- -- 0.75 ... 25 -- -- -- --
Tightening torques Nm 4 1.2 1.2 2 3.5/2.5 2.5 ... 3 3
© Siemens AG 2012
Fuse Systems
NEOZED Fuse Systems
NEOZED fuse links, 5SE2
9 Siemens · 2012
■Dimensional drawings
5SG7 1.3 MINIZED switch disconnectors D02, with draw-out technology
Locking cap for MINIZED switch disconnectors D02
5SG7 6 MINIZED fuse switch disconnectors D01, with draw-out technology
Fuse base with touch protection BGV A3 (VBG4), molded plastic
1P 1P+N 2P 3P 3P+N
81
27
79
70
44
55
5
246
135
1P 2P 3P 3P+N
18 36 54 72 6 44
64
107
70
Sizes D01/D02, with combined terminal, can be busbar mounted With cover
5SG1 301,
5SG1 701
5SG5 301,
5SG5 701
5SG1 330,
5SG1 331,
5SG5 330,
5SG5 730
5SG1 730,
5SG1 731
26,6 79,8 4
44
47,2
59,2
Protective
caps
© Siemens AG 2012
90
45 I2_17072
I2_07988a
45
88
I2_07536b
71,5
58,7
45
Fuse Systems
NEOZED Fuse Systems
NEOZED fuse links, 5SE2
10 Siemens · 2012
NEOZED fuse bases made of ceramic
NEOZED covers made of molded plastic
Sizes D01/D02/D03
5SG1 5 5SG5 5
Type Version Size Connection
type
Dimensions
a b c d e g
not sealed/
sealed
h i k
Clip-on with cover
5SG1 553 1-pole D01 BB 26.8 36 40 56 70 23/26.5 54 -- --
5SG1 653 D02 SS 26.8 36 41 56 70 23/26.5 59 -- --
5SG1 693 D02 KS 26.8 36 41 56 70 23/26.5 60 -- --
5SG5 553 3-pole D01 BB 80.8 36 40 56 70 23/26.5 54 -- --
5SG5 653 D02 SS 80.8 36 41 56 70 23/26.5 59 -- --
5SG5 693 D02 KS 80.8 36 41 56 70 23/26.5 60 -- --
Clip-on without cover
5SG1 595 1-pole D01 BB 26.8 36 40 56 70 23/26.5 54 -- --
5SG1 655 D02 SS 26.8 36 41 56 70 23/26.5 59 -- --
5SG1 695 D02 KS 26.8 36 41 56 70 23/26.5 60 -- --
5SG1 812 D03 KS 44.9 50 44 54.5 76 44 86 -- --
5SG5 555 3-pole D01 BB 80.8 36 40 56 70 23/26.5 54 -- --
5SG5 655 D02 SS 80.8 36 41 56 70 23/26.5 59 -- --
5SG5 695 D02 KS 80.8 36 41 56 70 23/26.5 60 -- --
Screw-on without cover
5SG1 590 1-pole D01 BB 26.8 36 40 56 70 23/26.5 54 20 22
5SG1 650 D02 SS 26.8 36 41 56 70 23/26.5 59 20 22
5SG1 810 D03 KS 44.9 50 46 54.5 76 44 86 32 32
5SG5 550 3-pole D01 BB 80.8 36 40 56 70 23/26.5 54 74 22
5SG5 650 D02 SS 80.8 36 41 56 70 23/26.5 59 74 22
5SG5 690 D02 KS 80.8 36 41 56 70 23/26.5 60 74 22
Legend
Connection type:
K = screw head contact
B = clamp-type terminal
S = saddle terminal
BB = clamp-type terminal at incoming feeder
clamp-type terminal at outgoing feeder
SS = saddle terminal at incoming feeder
saddle terminal at outgoing feeder
KS = screw head contact at incoming feeder
saddle terminal at outgoing feeder
NEOZED covers for NEOZED fuse bases, made of molded plastic
5SH5 244 (A1) 5SH5 245 (A2)
NEOZED covers for NEOZED fuse bases, made of ceramic
5SH5 251 (A4) and 5SH5 253 (A10) 5SH5 252 (A5) and 5SH5 254 (A11) 5SH5 233 (A6)
ai e cd k
screw cap
protective
cover
26,6 79,8 16
27 12
21
81 12
21
13 45
18
© Siemens AG 2012
bhg I201_06258b I2_07537a 71,5 45 7045
I2_06206c
70
45
I2_06209c
45
60
I2_06207c
Fuse Systems
NEOZED Fuse Systems
NEOZED fuse links, 5SE2
11 Siemens · 2012
NEOZED screw caps
NEOZED fuse links
■Schematics
Diagrams
5SG7 1.3 MINIZED switch disconnectors D02, with draw-out technology
5SG7 6 MINIZED fuse switch disconnectors D01, with draw-out technology
NEOZED fuse bases/general fuses
5SH4 Type Size Sealable For mounting
depth
Dimensions
a b
5SH4 116 D01 -- 70 27.5 24
5SH4 163 D02 -- 70 27.5 24
5SH4 316 D01 x 70 33 26.5
5SH4 363 D02 x 76 33 26.5
5SH4 100 D03 -- 70 37 44
5SH4 317 D01 -- 70 29.5 25
5SH4 362 D02 -- 70 30.5 25
a
I201_06253d
Size/thread Rated current in A Dimension
d2 min
Dimension
d3
Dimension
d4 max
Dimension
h
D01/E14 2 ... 16 9.8 11 6 36
D02/E18 20 ... 63 13.8 15.3 10 36
D03/M30 80 ... 100 20.8 22.5 36 43
5SG7 113 5SG7 153 5SG7 123 5SG7 133
5SG7 133-8BA25
5SG7 133-8BA35
5SG7 133-8BA50
5SG7 163
1P 1P+N 2P 3P 3P+N
21 NN 21 21 43 21 43 65 21 43 65 NN
5SG7 610 5SG7 650 5SG7 620 5SG7 630 5SG7 660
1P 1P+N 2P 3P 3P+N
21 NN 21 43 21 65 43 21 NN 65 43 21
5SG1 5SG5
1P 3P
© Siemens AG 2012
b
Fuse Systems
NEOZED Fuse Systems
NEOZED fuse links, 5SE2
12 Siemens · 2012
■Characteristic curves
Series 5SE2
Sizes: D01, D02, D03
Operational class: gG
Rated voltage: 400 V AC/250 V DC
Rated current: 2 ... 100 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Table see page 13.
© Siemens AG 2012
Fuse Systems
NEOZED Fuse Systems
NEOZED fuse links, 5SE2
13 Siemens · 2012
Series 5SE2
Sizes: D01, D02, D03
Operational class: gG
Rated voltage: 400 V AC/250 V DC
Rated current: 2 ... 100 A
Type In Pv Δϑ I2ts I2ta
1 ms 4 ms 230 V AC 400 V AC
(t < 4 ms)
A W K A2s A2s A2s A2s
5SE2 302 2 1.6 19 1.2 1.4 2.9 3.9
5SE2 304 4 1.3 14 12.5 13.6 22 30
5SE2 306 6 1.7 19 46.7 48 58 75
5SE2 310 10 1.3 16 120 136 220 280
5SE2 013-2A 13 2.0 23 220 244 290 370
5SE2 316 16 2.1 24 375 410 675 890
5SE2 320 20 2.4 26 740 810 1250 1650
5SE2 325 25 3.2 33 1210 1300 1900 2600
5SE2 332 32 3.6 34 2560 2800 4300 5500
5SE2 335 35 3.8 36 3060 3500 5100 6500
5SE2 340 40 4.0 37 4320 4800 7900 9500
5SE2 350 50 4.2 38 6750 7400 10500 13000
5SE2 363 63 5.3 45 10000 10900 16000 20500
5SE2 280 80 5.3 43 13000 15400 25000 34500
5SE2 300 100 6.4 47 22100 30000 46000 60000
© Siemens AG 2012
Fuse Systems
DIAZED fuse systems,
5SA, 5SB, 5SC, 5SD
14 Siemens · 2012
■ Overview
The DIAZED fuse system is one of the oldest fuse systems in the
world. It was developed by Siemens as far back as 1906. It is still
the standard fuse system in many countries to this day. It is
particularly widely used in the harsh environments of industrial
applications.
The series is available with rated voltages from 500 A to 750 V.
All DIAZED bases must be fed from the bottom to ensure an
insulated threaded ring when the fuse link is being removed.
Reliable contact of the fuse links is only ensured when used
together with DIAZED screw adapters.
The terminals of the DIAZED bases are available in different
versions and designs to support the various installation
methods.
The high-performing EZR bus-mounting system for screw fixing
is an outstanding feature. The busbars, which are particularly
suited for bus-mounting bases, have a load capacity of up to
150 A with lateral infeed.
DIAZED stands for Diametral gestuftes zweiteiliges
Sicherungssystem mit Edisongewinde (diametral two-step fuse
system with Edison screw).
■Benefits
■Technical specifications
1 2 3 4 5 6 7 8 9
10
11
12345 9 6 10
7 11
8
DIAZED cap for fuse bases
DIAZED collar for fuse bases
DIAZED fuse bases
DIAZED cover for fuse bases
DIAZED screw adapter
DIAZED fuse link
DIAZED screw cap
DIAZED fuse base (with touch protection BGV A3)
5SA, 5SB, 5SC, 5SD
Standards IEC 60269-3; DIN VDE 0635; DIN VDE 0636-3; CEE 16
Operational class Acc. to IEC 60269; DIN VDE 0636 gG
Characteristic Acc. to DIN VDE 0635 Slow and quick
Rated voltage Un V AC 500, 690, 750
V DC 500, 600, 750
Rated current In A 2 ... 100
Rated breaking capacity kA AC 50, 40 at E16
kA DC 8, 1.6 at E16
Mounting position Any, but preferably vertical
Non-interchangeability Using screw adapter or adapter sleeves
Degree of protection Acc. to IEC 60529 IP20, with connected conductors
Resistance to climate °C Up to 45, at 95 % rel. humidity
Ambient temperature °C -5 ... +40, humidity 90 % at 20
Terminal version
B K S R
Size DII DIII NDz DII DIII DIII DIV DII DIII
Conductor cross-sections
• Rigid, min. mm2 1.5 2.5 1.0 1.5 2.5 2.5 10 1.5 1.5
• Rigid, max. mm2 10 25 6 10 25 25 50 35 35
• Flexible, with end sleeve mm2 10 25 6 10 25 25 50 35 35
Tightening torques
• Screw M4 Nm 1.2 --
• Screw M5 Nm 2.0 --
• Screw M6 Nm 2.5 4
• Screw M8 Nm 3.5 --
LV10-1_THB_05_EN.book Seite 14 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
i201_18300
Fuse Systems
DIAZED fuse systems,
5SA, 5SB, 5SC, 5SD
15 Siemens · 2012
■Dimensional drawings
DIAZED fuse links
5SA1, 5SA2 Size/thread TNDz/E16, NDz/E16
Rated current in A 2 4 6 10 16 20 25
Dimension d 6 6 6 8 10 12 14
49
I2_06251b
5SB1, 5SB2 Size/thread DII/E27
Rated current in A 2 4 6 10 16 20 25
Dimension d 6 6 6 8 10 12 14
I2_06247b
49
5SB3, 5SB4 Size/thread DIII/E33
Rated current in A 32 35 50 63
Dimension d 16 16 18 20
I2_06248b
49
5SC1, 5SC2 Size/thread DIV/R1¼”
Rated current in A 80 100
Dimension d 5 7
I2_06682a
57
5SD6, 5SD8 Size/thread DIII/E33
Rated current in A 2 4 6 10 16 20 25 35 50 63
Dimension d 6 6 6 8 10 12 14 16 18 20
70
I2_06329b
LV10-1_THB_05_EN.book Seite 15 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
13,2
d Ød Ø22,5 Ød Ø28 Ød Ø34,5 d28
Fuse Systems
DIAZED fuse systems,
5SA, 5SB, 5SC, 5SD
16 Siemens · 2012
DIAZED fuse bases made of ceramic
DIAZED fuse bases made of molded plastic
5SF1 Version Connection
type
Dimensions
Type a b c d e ∅g h ∅i
NDz/25 A
5SF1 012 KK 29 49 44.6 55 75 32 49 --
5SF1 01 KK 29 49 44.6 55 75 32 49 4.2
DII/25 A
5SF1 005 BB 38.4 41 46.6 53 83 34 63 --
5SF1 024 BB 38.4 41 46.6 53 83 34 63 4.3
DIII/63 A
5SF1 205 BS 45.5 46 47 54 83 43 78 --
5SF1 215 SS 45.5 46 47 54 83 43 78 --
5SF1 224 BS 45.5 46 47 54 83 43 78 4.3
5SF1 214 SS 45.5 46 47 54 83 43 78 4.3
DIV/100 A
5SF1 401 Flat terminal 68 68 -- 79 110 65 116 6.5
a i cd e
5SF4 230
80
max.113
12
50
65
M6
5SF5 Version Connection
type
Dimensions
Type a b c d e f g h
DII/3 × 25 A
5SF5 067 BB 106 106 48 -- -- 45 52 86
5SF5 066 KB 106 106 48 32 5.2 45 52 86
DIII/3 × 63 A
5SF5 237 BB 127 130 54 -- -- 45 52 85
5SF5 236 KB 127 130 54 32 5.2 45 52 85
a f h g d
5SF1, 5SF5 Type Dimensions
a b
5SF1 060 40 --
5SF1 260 50 --
5SF5 068 -- 120
5SF5 268 -- 150
LV10-1_THB_05_EN.book Seite 16 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
I2_06242b
bhg 5105
I2_06443a
I2_08035a
c b e
Fuse Systems
DIAZED fuse systems,
5SA, 5SB, 5SC, 5SD
17 Siemens · 2012
DIAZED EZR bus-mounting bases
DIAZED screw caps/cover rings made of molded plastic/ceramic
DIAZED cover made of molded plastic
DIAZED caps made of molded plastic
5SF6 005 5SF6 205
18
11
14
max.83
31
27
max.38,5
5
34
max.49
5,3
18
11
14
max.83
31
Screw caps Cover rings Screw caps Cover rings
5SH1 5SH3 Size/thread Type Dimensions Type Dimensions
a ∅b a ∅b
NDz/E16 5SH1 112 36 24
DII/E27 5SH1 221 42 33 5SH3 401 17.5 39.5
5SH1 12 45.5 34 5SH3 32 17.5 41.5
5SH1 22 43 39
DIII/E33 5SH1 231 42 40 5SH3 411 17.5 49.5
5SH1 13 45.5 43 5SH3 34 19 51.5
5SH1 23 47 45
5SH1 161 48 48
5SH1 170 68 43
DIV/R1¼” 5SH1 141 53 65
a
I201_06257 I201_13741a
a
5SH2 Size/thread Type Dimensions
a b ∅c d
DII/E27 5SH2 032 41 51 27.5 19
DIII/E33 5SH2 232 52 51 34.5 18.5
d
I2_06255c
ca
5SH2 Size/thread Type Dimensions
amax bmax cmax dmax
NDz/E16 5SH2 01 33 68 51.7 75
DII/E27 5SH2 02 43 74.7 53.6 83
DIII/E33 5SH2 22 51 90.5 53.6 83
a c d
LV10-1_THB_05_EN.book Seite 17 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
41,5
45
16
30
20,5 31
I2_06444a
37 22
34
51,5
55
I2_06445a
16
b b b b I2_06246c
Fuse Systems
DIAZED fuse systems,
5SA, 5SB, 5SC, 5SD
18 Siemens · 2012
■Characteristic curves
Series 5SA2
Size: E16
Characteristic: slow
Rated voltage: 500 V AC/500 V DC
Rated current: 2 ... 25 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Type In Pv Δϑ I2ts
1 ms 4 ms
A W K A2s A2s
5SA2 11 2 0.85 15 1.2 2.3
5SA2 21 4 1.3 17 8.5 13
5SA2 31 6 1.9 14 40 80
5SA2 51 10 1.4 17 200 190
5SA2 61 16 2.4 30 290 550
5SA2 71 20 2.6 36 470 1990
5SA2 81 25 3.4 34 1000 2090
Type I2ta
230 V AC 320 V AC 500 V AC
A2s A2s A2s
5SA2 11 6.6 7.8 0.7
5SA2 21 22 26 34
5SA2 31 66 76 100
5SA2 51 240 270 340
5SA2 61 890 950 1090
5SA2 71 1200 1350 1620
5SA2 81 2400 2600 3450
LV10-1_THB_05_EN.book Seite 18 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
DIAZED fuse systems,
5SA, 5SB, 5SC, 5SD
19 Siemens · 2012
Series 5SA1
Size: E16
Characteristic: quick
Rated voltage: 500 V AC/500 V DC
Rated current: 2 ... 25 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Type In Pv A W
5SA1 11 2 1.5
5SA1 21 4 1.9
5SA1 31 6 2.7
5SA1 51 10 3.4
5SA1 61 16 3.7
5SA1 71 20 4.4
5SA1 81 25 4.9
LV10-1_THB_05_EN.book Seite 19 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
DIAZED fuse systems,
5SA, 5SB, 5SC, 5SD
20 Siemens · 2012
Series 5SB2, 5SB4, 5SC2
Size: DII, DIII, DIV
Operational class: gG
Rated voltage: 500 V AC/500 V DC
Rated current: 2 ... 100 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Type In Pv Δϑ I2ts
1 ms 4 ms
A W K A2s A2s
5SB2 11 2 2.6 15 3.7 3.9
5SB2 21 4 2.0 13 15 16
5SB2 31 6 2.2 14 42 45
5SB2 51 10 1.6 20 120 140
5SB2 61 16 2.4 23 500 580
5SB2 71 20 2.6 26 750 1100
5SB2 81 25 3.4 38 1600 2000
5SB4 010 32 3.6 23 2300 2500
5SB4 11 35 3.7 25 3450 3000
5SB4 21 50 5.7 41 6500 5200
5SB4 31 63 6.9 48 11000 12000
5SC2 11 80 7.5 33 14600 16400
5SC2 21 100 8.8 46 28600 30000
Type I2ta
230 V AC 320 V AC 500 V AC
A2s A2s A2s
5SB2 11 6.6 8.8 10.7
5SB2 21 22 28 34
5SB2 31 66 85 100
5SB2 51 240 300 340
5SB2 61 890 1060 1090
5SB2 71 1200 1450 1620
5SB2 81 2400 3150 3450
5SB4 010 3450 4150 4850
5SB4 11 5200 6200 7200
5SB4 21 9750 12350 14500
5SB4 31 16500 22200 26500
5SC2 11 23000 28500 32500
5SC2 21 44000 56000 65000
LV10-1_THB_05_EN.book Seite 20 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
DIAZED fuse systems,
5SA, 5SB, 5SC, 5SD
21 Siemens · 2012
Series 5SB1, 5SB3, 5SC1
Size: DII, DIII, DIV
Operational class: quick
Rated voltage: 500 V AC/500 V DC
Rated current: 2 ... 100 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Type In Pv Δϑ I2ts I2ta
4 ms 500 V AC
A W K A2s A2s
5SB1 11 2 1.5 3 2.5 5
5SB1 21 4 1.9 13 15.6 31.2
5SB1 31 6 2.7 18 36 72
5SB1 41, 5SB1 51 10 3.4 23 102 204
5SB1 61 16 3.7 24 130 260
5SB1 71 20 4.4 31 185 370
5SB1 81 25 4.9 34 250 500
5SB3 11 35 8.3 39 640 1280
5SB3 21 50 9.9 49 1960 3920
5SB3 31 63 12.8 63 3880 7760
5SC1 11 80 12.7 45 10890 21780
5SC1 21 100 15.4 55 17400 34800
LV10-1_THB_05_EN.book Seite 21 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
DIAZED fuse systems,
5SA, 5SB, 5SC, 5SD
22 Siemens · 2012
Series 5SD8
Size: DIII
Operational class: gG
Rated voltage: 690 V AC/600 V DC
Rated current: 2 ... 63 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Type In Pv I2ts I2ta
4 ms 242 V AC
A W A2s A2s
5SD8 002 2 1 4.4 7
5SD8 004 4 1.2 40 62
5SD8 006 6 1.6 88 140
5SD8 010 10 1.4 240 380
5SD8 016 16 1.8 380 600
5SD8 020 20 2 750 1200
5SD8 025 25 2.3 2000 3200
5SD8 035 35 3.1 3300 5100
5SD8 050 50 4.6 7000 11000
5SD8 063 63 5.5 9500 15000
LV10-1_THB_05_EN.book Seite 22 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
DIAZED fuse systems,
5SA, 5SB, 5SC, 5SD
23 Siemens · 2012
Series 5SD6
Size: DIII
Operational class: quick (railway network protection)
Rated voltage: 750 V AC/750 V DC
Rated current: 2 ... 63 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Type In Pv I2ts I2ta
4 ms 500 V AC
A W A2s A2s
5SD6 01 2 2.8 0.7 2
5SD6 02 4 4 4.5 13
5SD6 03 6 4.8 10 29
5SD6 04 10 4.8 50 135
5SD6 05 16 5.9 78 220
5SD6 06 20 6.3 125 380
5SD6 07 25 8.3 265 800
5SD6 08 35 13 550 1600
5SD6 10 50 16.5 1800 5500
5SD6 11 63 18 3100 9600
LV10-1_THB_05_EN.book Seite 23 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
Cylindrical fuse links and
cylindrical fuse holders, 3NW6, 3NW7, 3NW8
24 Siemens · 2012
■ Overview
Cylindrical fuses are standard in Europe. There are a range of
different cylindrical fuse links and holders that comply with the
standards IEC 60269-1, -2 and -3, and which are suitable for use
in industrial applications. In South West Europe they are also
approved for use in residential buildings.
The cylindrical fuse holders are also approved to UL 512. The
cylindrical fuse holders are tested and approved as fuse
disconnectors according to the switching device standard
IEC 60947-3. They are not suitable for switching loads.
Cylindrical fuse holders can be supplied with or without signal
detectors. In the case of devices with signal detector, a small
electronic device with LED is located behind an inspection
window in the plug-in module. If the inserted fuse link is tripped,
this is indicated by the LED flashing.
The switching state of the fuse holder can be signaled over a
side-mounted auxiliary switch, which enables the integration of
the fuses in the automation process.
■Technical specifications
Cylindrical fuse links
3NW6 3.. 3NW6 0.. 3NW6 1.. 3NW6 2.. 3NW8 0.. 3NW8 1.. 3NW8 2..
Sizes mm × mm 8 × 32 10 × 38 14 × 51 22 × 58 10 × 38 14 × 51 22 × 58
Standards IEC 60269-1, -2, -3; NF C 60-200; NF C 63-210, -211; NBN C 63269-2, CEI 32-4, -12
Operational class gG aM
Rated voltages Un V AC 400 or 500
Rated current In A 2 ... 20 2 ... 32 4 ... 50 8 ... 100 0.5 ... 25 2 ... 50 10 ... 100
Rated breaking capacity
• 500 V version kA AC 100
• 400 V version kA AC 20
Mounting position Any, but preferably vertical
Cylindrical fuse holders
3NW7 3.. 3NW7 0.. 3NW7 1.. 3NW7 2..
Sizes mm × mm 8 × 32 10 × 38 14 × 51 22 × 58
Standards IEC 60269-1, -2, -3; NF C 60-200; NF C 63-210, -211; NBN C 63269-2-1, CEI 32-4, -12
Approvals Acc. to UL -- U U --
Acc. to CSA -- s s --
Rated voltage Un V AC 400 690
Acc. to UL/CSA V AC 400 600
Rated current In A AC 20 32 50 100
Rated breaking capacity kA 20 100
Switching capacity
• Utilization category AC-20B (switching without load), DC-20B
No-voltage changing
of fuse links
Yes
Sealable
when installed
Yes
Mounting position Any, but preferably vertical
Degree of protection Acc. to IEC 60529 IP20, with connected conductors
Terminals with touch protection
according to BGV A3 at incoming
and outgoing feeder
Yes
Ambient temperature °C -5 ... +40, humidity 90 % at +20
Conductor cross-sections
• Rigid mm2 0.5 ... 10 2.5 ... 10 4 ... 10
• Stranded mm2 0.5 ... 10 2.5 ... 25 4 ... 50
• Finely stranded, with end sleeve mm2 0.5 ... 10 2.5 ... 16 4 ... 35
• AWG (American Wire Gauge) -- 10 ... 20 6 ... 10 --
Tightening torques Nm 1.2 2.0 2.5
LV10-1_THB_05_EN.book Seite 24 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
Cylindrical fuse links and
cylindrical fuse holders, 3NW6, 3NW7, 3NW8
25 Siemens · 2012
■Dimensional drawings
Auxiliary switches
Sizes
8 × 32 mm 10 × 38 mm 14 × 51 mm 22 × 58 mm
3NW7 0, 3NW7 3
1P 1P +N 2P 3P 3P+N
3NW7 1
1P 1P+N/2P 3P 3P+N
31,5
I2_06702c
38
I2_06703c
51
I2_06701c
58
I2_06704c
55
43
27 54 81 108 7
70
3NW7 2
1P 1P+N/2P 3P 3P+N
70
43
7
144 108 72 36
3NW7 901
3NW7 902
3NW7 903
48,5
5 9 49,8 44 6 9
64
LV10-1_THB_05_EN.book Seite 25 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
8,5
10,3
14,3
22,2
90
45
I2_07853b
45
117
I2_07869c
45
90
I2_10891
I2_15459
45
83
Fuse Systems
Cylindrical fuse links and
cylindrical fuse holders, 3NW6, 3NW7, 3NW8
26 Siemens · 2012
■Schematics
Diagrams
Auxiliary switches
1P 1P+N 2P 3P 3P+N
3NW7 901
3NW7 902
3NW7 903
22 14
13/21
22
12
21
11
LV10-1_THB_05_EN.book Seite 26 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
Cylindrical fuse links and
cylindrical fuse holders, 3NW6, 3NW7, 3NW8
27 Siemens · 2012
■Characteristic curves
Series 3NW6 0
Size: 10 mm × 38 mm
Operational class: gG
Rated voltage: 500 V AC (2 ... 25 A),
400 V AC (32 A)
Rated current: 2 ... 32 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Type In Pv Δϑ I2ts I2ta
1 ms 230 V AC 400 V AC 500 V AC
A W K A2s A2s A2s A2s
3NW6 002-1 2 2.2 32 1.6 5 6.5 8
3NW6 004-1 4 1.2 16.5 5 16 19 26
3NW6 001-1 6 1.6 23 48 70 84 120
3NW6 008-1 8 2.3 35 110 180 140 350
3NW6 003-1 10 0.7 16 230 420 570 1050
3NW6 006-1 12 0.9 33 390 510 600 1200
3NW6 005-1 16 1.3 38 600 950 1300 1700
3NW6 007-1 20 2.1 51.5 640 1200 1700 2100
3NW6 010-1 25 2.1 54 1300 2200 2800 3200
3NW6 012-1 32 2.5 51 2360 4000 4200 --
LV10-1_THB_05_EN.book Seite 27 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
Cylindrical fuse links and
cylindrical fuse holders, 3NW6, 3NW7, 3NW8
28 Siemens · 2012
Series 3NW6 1
Size: 14 mm × 51 mm
Operational class: gG
Rated voltage: 500 V AC (4 ... 40 A),
400 V AC (50 A)
Rated current: 4 ... 50 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
102
eff [A]
102
4 6 8 2 103 4 6 8 2 104 4 6 8 2 105 4 6 8 2466
103 24246
104 1 2
4 A
6 A
8 A
10 A
12 A
16 A
20 A
25 A
32 A
40 A
50 A
Type In Pv Δϑ I2ts I2ta
1 ms 230 V AC 400 V AC 500 V AC
A W K A2s A2s A2s A2s
3NW6 104-1 4 1.9 19 5 16 20 26
3NW6 101-1 6 2.5 25 48 85 100 120
3NW6 108-1 8 2.4 18 110 200 250 350
3NW6 103-1 10 0.8 12 230 420 750 1050
3NW6 106-1 12 1.0 16 390 600 800 1200
3NW6 105-1 16 1.6 27 600 1000 1400 1700
3NW6 107-1 20 2.3 32.5 670 1400 1800 2100
3NW6 116-1 25 2.2 31.5 1300 2300 2800 3200
3NW6 112-1 32 3.2 39.5 2500 4100 5500 6500
3NW6 117-1 40 4.5 48 3600 6100 8000 9200
3NW6 120-1 50 4.8 55 8000 12200 16000 --
LV10-1_THB_05_EN.book Seite 28 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
c [A]
I2_06560c
Fuse Systems
Cylindrical fuse links and
cylindrical fuse holders, 3NW6, 3NW7, 3NW8
29 Siemens · 2012
Series 3NW6 2
Size: 22 mm × 58 mm
Operational class: gG
Rated voltage: 500 V AC (8 ... 80 A),
400 V AC (100 A)
Rated current: 8 ... 100 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Type In Pv Δϑ I2ts I2ta
1 ms 230 V AC 400 V AC 500 V AC
A W K A2s A2s A2s A2s
3NW6 208-1 8 2.5 15 110 200 170 350
3NW6 203-1 10 0.9 10.5 230 420 760 1050
3NW6 206-1 12 1.1 12 390 600 800 1200
3NW6 205-1 16 1.6 14.5 600 1000 1400 1700
3NW6 207-1 20 2.4 22.5 670 1200 1800 2200
3NW6 210-1 25 2.7 24 1300 2100 2800 3300
3NW6 212-1 32 3.2 28 2450 4400 6100 7200
3NW6 217-1 40 4.9 35 3600 6200 8000 10000
3NW6 220-1 50 5.9 46 6800 11400 16200 20600
3NW6 222-1 63 6.8 48 12500 18800 24000 30000
3NW6 224-1 80 7.5 48 24700 30500 43000 52500
3NW6 230-1 100 8.4 55 46000 64700 80000 --
LV10-1_THB_05_EN.book Seite 29 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
Cylindrical fuse links and
cylindrical fuse holders, 3NW6, 3NW7, 3NW8
30 Siemens · 2012
Series 3NW6 30.-1
Size: 8 mm × 32 mm
Operational class: gG
Rated voltage: 400 V AC
Rated current: 2 ... 20 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Type In Pv Δϑ I2ts I2ta
1 ms 400 V AC
A W K A2s A2s
3NW6 302-1 2 2 27 1.6 6
3NW6 304-1 4 1.5 19 5 21
3NW6 301-1 6 1.5 20.5 48 85
3NW6 303-1 10 0.7 15 230 530
3NW6 305-1 16 1.1 29 600 1400
3NW6 307-1 20 1.7 34.5 790 1800
LV10-1_THB_05_EN.book Seite 30 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
Cylindrical fuse links and
cylindrical fuse holders, 3NW6, 3NW7, 3NW8
31 Siemens · 2012
Series 3NW8
Sizes: 10 mm × 38 mm
14 mm × 51 mm
22 mm × 58 mm
Operational class: aM
Rated voltage: 500 V AC,
400 V AC (3NW8 120-1, 3NW8 230-1)
Rated current: 0.5 ... 100 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
LV10-1_THB_05_EN.book Seite 31 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
Cylindrical fuse links and
cylindrical fuse holders, 3NW6, 3NW7, 3NW8
32 Siemens · 2012
Series 3NW8
Sizes: 10 mm × 38 mm
14 mm × 51 mm
22 mm × 58 mm
Operational class: aM
Rated voltage: 500 V AC
400 V AC (3NW8 120-1, 3NW8 230-1)
Rated current: 0.5 ... 100 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
LV10-1_THB_05_EN.book Seite 32 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
Compact fuse holders for
motor starter combinations, 3NW7
33 Siemens · 2012
■ Overview
Fused motor starter combinations can be configured with the
fuse holders. The contactor and the fuse holder can be mounted
directly next to each other.
The strong current-limiting fuses ensure a type 2 protection level
(coordination according to IEC 60947-4, no damage protection)
for the contactor.
The UL version has an SCCR value of 200 kA.
Cylindrical fuse holder Class CC with signal detector and mounted
auxiliary switch
The accessories are generally UL-certified.
Customers can mount an auxiliary switch which signals the
switching state or prevents the fuse holder from switching off
under load by interrupting the contactor control, thus increasing
safety for the operator and process.
Busbars and a matching three-phase feeder terminals complete
the product range.
Installation configuration of a cylindrical fuse holder and a SIRIUS
contactor on busbar adapter for the 60 mm busbar system.
■Technical specifications
Cylindrical fuse holders
3NW7 0. .-1 3NW7 5. .-1HG
Sizes mm × mm 10 × 38 Class CC
Standards IEC 60269; UL 512; CSA UL 512; CSA
Approvals
• Acc. to UL U, UL File Number E171267 u, UL File Number E171267
• Acc. to CSA s s
Rated voltage Un V AC 690 600
Rated current In A AC 32 30
Rated short-circuit strength kA 120 (at 500 V)
80 (at 690 V)
200
Switching capacity
• Utilization category AC-20B (switching without load) --
Rated impulse withstand voltage kV 6
Overvoltage category III
Pollution degree 2
Max. power dissipation of the fuse link W 3
No-voltage changing of fuse links °C -5 ... +40, humidity 90 % at +20
Sealable when installed Yes
lockable with padlock Yes
Mounting position Any, but preferably vertical
Current direction any
Degree of protection Acc. to IEC 60529 IP20, with connected conductors
Terminals with touch protection according to BGV A3
at incoming and outgoing feeder
Yes
Ambient temperature °C -5 ... +40, humidity 90 % at +20
Conductor cross-sections
• Finely stranded, with end sleeve mm2 1 ... 4
• AWG cables (American Wire Gauge) AWG 18 ... 10
Tightening torques Nm 1.5
lb. in 13
• Terminal screws PZ2
LV10-1_THB_05_EN.book Seite 33 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
Compact fuse holders for
motor starter combinations, 3NW7
34 Siemens · 2012
Auxiliary switches
3NW7 903-1
Standards IEC 60947
Approvals U, s, UL 508, UL File Number E334003
Utilization category AC-12 DC-13 AC-15 Acc. to UL
Rated voltage Un V AC 250 -- -- -- 24 120 240 240
V DC -- 24 120 240 -- -- -- --
Rated current In A 2 0.5 0.25 4 3 1.5 5
Busbars
5ST2 60.
For cylindrical fuse holders 3NW7 0. .-1 3NW7 5. .-1HG
Pin spacing mm 15
Standards EN 60974-1, VDE 0660 part 100, IEC 60947-1:2004, UL 508, CSA 22.2
Approvals u, UL 4248-1, UL File Number E337131
Busbar material E-Cu 58 F25
Partition material PA66-V0
Lamp wire resistance/1.5 mm2 °C 960
Insulation coordination Overvoltage category III, degree of pollution 2
Rated voltage Un
• Acc. to UL V AC -- 600
• Acc. to IEC V AC 690 --
Maximum busbar current In
• Acc. to UL A -- 65
• Acc. to IEC A 80 --
Terminal
5ST2 600
For cylindrical fuse holders 3NW7 0. .-1 3NW7 5. .-1HG
Pin spacing mm 15
Standards IEC 60999:2000, UL 508
Approvals u, UL 4248-1, UL File Number E337131
Enclosure/cover material PA66-V0
Lamp wire resistance/1 mm2 °C 960
Temperature resistance PA66-V0, HDT B ISO 179,
UL 94-V0/1.5
°C 200
Insulation coordination Overvoltage category III, degree of pollution 2
Max. operational voltage Umax
• Acc. to UL V AC -- 600
• Acc. to IEC V AC 690 --
Maximum electrical load Imax
• Acc. to UL A -- 65
• Acc. to IEC A 80 --
Rated current In A 63
Conductor cross-sections
• solid/stranded mm2 2.5 ... 35
• Finely stranded, with end sleeve mm2 2.5 ... 25
Tightening torque of clamping screw Nm 2.5 ... 3.5
LV10-1_THB_05_EN.book Seite 34 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
Compact fuse holders for
motor starter combinations, 3NW7
35 Siemens · 2012
■Dimensional drawings
■Schematics
Circuit diagrams
3NW7 03.-1
3NW7 53.-1HG
5ST2 60. 5ST2 600
3NW7 03.-1
3NW7 53.-1HG
3NW7 903-1
65 43 21
LV10-1_THB_05_EN.book Seite 35 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
I202_01414
I202_01412
I202_01413
I202_01447
Fuse Systems
Class CC fuse system,
3NW7, 3NW1, 3NW2, 3NW3
36 Siemens · 2012
■ Overview
Class CC fuses are used for "branch circuit protection".
The enclosed fuse holders are designed and tested to comply
with the US National Electrical Code NEC 210.20(A). This means
that when subject to continuous operation, only 80 % of the rated
current is permissible as operational current.
An operational current of 100 % of the rated current (30 A) is only
permissible short-time.
The devices are prepared for the inscription labels of the
ALPHA FIX terminal blocks 8WH8 120-7AA15 and
8WH8 120-7XA05.
There are three different series:
• Characteristic: slow 3NW1 ...-0HG
For the protection of control transformers, reactors,
inductances. Significantly slower than the minimum
requirements specified by UL for Class CC Fuses of
12 s at 2 × In.
• Characteristic: quick 3NW2 ...-0HG
For a wide range of applications, for the protection of lighting
installations, heating, control systems.
• Characteristic: slow, current-limiting, 3NW3 ...-0HG
Slow for overloads and quick for short circuits. High current
limitation for the protection of motor circuits.
■Technical specifications
■Dimensional drawings
Class CC fuse holders
3NW7 5.3-0HG
Standards UL 512; CSA C22.2
Approvals UL 512; UL File No. E171267; CSA C22.2
Rated voltage V AC 600
Rated current In A 30
Max. power dissipation of fuse links
• With cable, 6 mm2 W 3
• With cable, 10 mm2 W 4.3
Conductor cross-sections
• Solid and stranded mm2 1.5 ... 25
• AWG cables, solid and stranded AWG 18 ... 4
Class CC fuse links
3NW1 ...-0HG 3NW2 ...-0HG 3NW3 ...-0HG
Standards UL 248-4; CSA C22.2
Approvals UL 248-4; UL File Number E258218; CSA C22.2
Characteristic Slow Quick Slow, current limiting
Rated voltage V AC
V DC
600 600 600
150 (3 .... 15 A)
300 (< 3 A, > 15 A)
Rated breaking capacity kA AC 200
3NW1. . .-0HG
3NW2. . .-0HG
3NW3. . .-0HG
3NW7 5.3-0HG
38,1
I2_12159
37 7
49
58
54 36 18
LV10-1_THB_05_EN.book Seite 36 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Ø10,3
45
81
I2_13727
Fuse Systems
Class CC fuse system,
3NW7, 3NW1, 3NW2, 3NW3
37 Siemens · 2012
■Characteristic curves
Series 3NW1 ...-0HG
Time/current characteristics diagram
Series 3NW2 ...-0HG
Time/current characteristics diagram
Series 3NW1 ...-0HG
Time/current characteristics diagram
Series 3NW3 ...-0HG
Time/current characteristics diagram
Prospective short-circuit current
2 100 6 4 8 68 2 101 6 4 8 102 4 2p A]
10
2468
-1 10
24680 10
24681 10
286
102 42
Prospective short-circuit current p [A]
2 100 6 4 8 101 2 6 4 8 102 2 6 4 8 103
10-2
2468
10-1
2468
100 2468
101 2
102 2468
103 468
Prospective short-circuit current
2 100 6 48 2 101 6 6 48 8 2 102 103 4p[A]
10-2
2468
10-1
2468
100 2468
101 2
102
103 2468468
Prospective short-circuit current
2 100 6 48 2 101 6 48 2 102 6 8 103 4p [A]
10-2
2468
10-1
2468
100 2468
101 2
102
103 2468468
LV10-1_THB_05_EN.book Seite 37 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Virtual melting time
I202_02185
0,6 A
0,8 A
1 A
1,5 A
2 A
3 A
4 A
5 A
6 A
A 7,5
2,5 A t [s] vs
t Virtual melting time [s] vmt
1 A
2 A
3 A
5 A
8 A
10 A
15 A
20 A
30 A
I2_12162a
Virtual melting time
20 A
15 A
30 A
I202_02186
10 A
8 A
t [s] vs
t Virtual melting time vmt
1 A
3 A
4 A
6 A
8 A
10 A
12 A
15 A
20 A
25 A
30 A
[s]
I2_12163a
[
Fuse Systems
Class CC fuse system,
3NW7, 3NW1, 3NW2, 3NW3
38 Siemens · 2012
Series 3NW3 ...-0HG
Current limitation diagram
2 101 6 4 8 102 2 6 4 24 8 103 p [A]
101 2468
102 2
103 24468
30 A
25 A
20 A
15 A
2,8 A
1,25 A
LV10-1_THB_05_EN.book Seite 38 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
[A] c
I2_12164
Fuse Systems
Busbar systems, 5ST, 5SH
39 Siemens · 2012
■ Overview
Busbars with pin-type connections can be used for NEOZED
safety switching devices and fuse bases. Busbars in 10 mm2
and 16 mm2 versions are available.
Busbars with fork plugs are used for the most frequently used
NEOZED fuse bases made of ceramic.
■Technical specifications
5ST, 5SH
Standards EN 60439-1 (VDE 0660-500): 2005-01
Busbar material SF-Cu F 24
Partition material Plastic Cycoloy 3600,
heat-resistant over 90 °C
flame-retardant and
self-extinguishing,
dioxin and halogen-free
Rated operational voltage Uc V AC 400
Rated current In
• Cross-section 10 mm2 A 63
• Cross-section 16 mm2 A 80
Rated impulse withstand voltage Uimp kV 4
Test pulse voltage (1.2/50) kV 6.2
Rated conditional short-circuit current Icc kA 25
Resistance to climate
• Constant atmosphere Acc. to DIN 50015 23/83; 40/92; 55/20
• Humid heat Acc. to IEC 60068-2-30 28 cycles
Insulation coordination
• Overvoltage category III
• Pollution degree 2
Maximum busbar current IS/phase
• Infeed at the start of the busbar
- Cross-section 10 mm2 A 63
- Cross-section 16 mm2 A 80
• Infeed at the center of the busbar
- Cross-section 10 mm2 A 100
- Cross-section 16 mm2 A 130
LV10-1_THB_05_EN.book Seite 39 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
Busbar systems, 5ST, 5SH
40 Siemens · 2012
5ST3 7 . . - . HG busbars acc. to UL 508
Infeed at the start of the busbar Infeed along the busbar or midpoint infeed
5ST3 7. .-0HG 5ST3 7. .-2HG 5ST3 770-0HG 5ST3 770-1HG
Standards UL 508, CSA C22.2 No. 14-M 95
Approvals UL 508 File No. E328403
CSA
Operational voltage
• Acc. to IEC V AC 690
• Acc. to UL 489 V AC 600
Rated conditional short-circuit current kA 10 (RMS symmetrical 600 V for three cycles)
• Dielectric strength kV/mm 25
• Surge strength kV > 9.5
Rated current A -- -- 115
Maximum busbar current IS/phase
• Infeed at the start of the busbar A 80 100 -- --
• Infeed at the center of the busbar A 160 200 -- --
Insulation coordination
• Overvoltage category III
• Pollution degree 2
Busbar cross-section mm2 Cu 18 25 -- --
Infeed Any
Conductor cross-sections AWG -- -- 10 ... 1/0 14 ... 1
mm2 -- -- 6 ... 35 1.5 ... 50
Terminals
• Terminal tightening torque Nm -- -- 5 3.5
lbs/in -- -- 50 35
The sum of the output current per branch must not be greater than the
busbar current IS1.2 / phase.
S
I2_13755
S S
3 21 1 2 3
I2_13754a
LV10-1_THB_05_EN.book Seite 40 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
Busbar systems, 5ST, 5SH
41 Siemens · 2012
■Dimensional drawings
5ST3 7
Pin spacing in MW (modular width; 1 MW = 18 mm)
Dimensions of side view in mm (approx.)
5ST3 700
5ST3 701
5ST3 703 5ST3 704
5ST3 705
Single-phase Single-phase
5ST3 708
5ST3 710
5ST3 714
5ST2
Fork spacing in MW (modular width; 1 MW = 18 mm)
Dimensions of side view in mm (approx.)
5ST2 186
5ST2 190
5ST2 187
5ST2 191
5ST2 188
5ST2 192
Busbars for DIAZED EZR fuse bases
5SH3 54
5SH3 55
5SH3 500 5SH3 501
5SH5
Fork spacing in MW (modular width; 1 MW = 18 mm), dimensions of side views in mm (approx.)
5SH5 517 5SH5 320 5SH5 321 5SH5 322
13
1,5 1
1,5
18
1
L1 L2
18
L1 L2 L3
1 1
L1 L2 L3
1,5 1,5
15,1
13
47
30,6 30,6 1927
3
I2_06447a
3/16"
57
40 1881 40
I2_06448a
3
3/16"
52 6
960
1030 2
97 6 6
872
970 3
I2_13825
1,5
15 I2_13826
1,5
15
I2_13827
2
1,5
3
LV10-1_THB_05_EN.book Seite 41 Donnerstag, 12. April 2012 12:26 12
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3,5
I2_13674
15
I2_13748
15
I2_136749
3,5
I2_13750
16 16
I2_13426a
6
13
6
13
I2_13427
5
17
12
12
Fuse Systems
Busbar systems, 5ST, 5SH
42 Siemens · 2012
5ST3 7 . . - . HG busbars acc. to UL 508
5ST3 7
Pin spacings in MW (modular width 1 MW = 18 mm)
Dimensions of side view in mm (approx.)
5ST3 701-0HG 5ST3 703-0HG 5ST3 705-0HG
5ST3 710-0HG 5ST3 714-0HG 5ST3 701-2HG
5ST3 705-2HG 5ST3 710-2HG
5ST3 748-0HG 5ST3 750-0HG
5ST3 770-0HG 5ST3 770-1HG
2 1 1,5
15
L2 L1
1 1,5
21
L1 L2 L3
1 1
21
L1 L2 L3
1,5 1,5 1,5 2,5 1,5
15
21
1,5
L1 L2
2
21
L1 L2 L3
2 1,5 1,5
5 9,5
1
22 9,5
8 3
16 28,5
40 18
5ST3 6 touch protection covers
Pin spacings in MW (modular width 1 MW = 18 mm)
Dimensions of side view in mm (approx.)
5ST3 655-0HG
84,2
1 11,5
LV10-1_THB_05_EN.book Seite 42 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
I202_02123
5
23
23
I202_02122
I202_02104
5
23
I202_02105
23
I202_02106
14
I202_02107
24
I202_02108
18,5
60
I202_02110
30
I202_02111
24
I202_02109
Fuse Systems
LV HRC Fuse Systems
LV HRC fuse links, 3NA, 3ND
43 Siemens · 2012
■ Overview
LV HRC fuse systems (NH type) are used for installation systems
in non-residential, commercial and industrial buildings as well as
in systems of power supply companies. They therefore protect
essential building parts and installations.
NH fuse systems are fuse systems designed for operation by
experts. There are no constructional requirements for noninterchangeability of rated current and touch protection.
The components and auxiliary equipment are designed in such
a way as to ensure the safe replacement of NH fuses or isolation
of systems.
LV HRC fuse links are available in the sizes 000, 00, 0, 1, 2, 3, 4
and 4a.
LV HRC fuse links are available in the following operational
classes:
• gG for cable and line protection
• aM for the short-circuit protection of switching devices in
motor circuits
• gR or aR for the protection of power semiconductors
• gS: The new gS operational class combines cable and line
protection with semiconductor protection.
LV HRC fuse links of size 000 can also be used in
LV HRC fuse bases, LV HRC fuse switch disconnectors,
LV HRC fuse strips as well as LV HRC in-line fuse switch
disconnectors of size 00.
The fuse links 300 A, 355 A and 425 A comply with the standard
but do not have the VDE mark.
LV HRC components
1 2 3 4 5 6
15 16 17 18 19
10 11 12
14
13
9 8 7
LV HRC fuse bases from the SR60 busbar system
LV HRC fuse bases for busbar mounting
LV HRC fuse base, 3-pole
LV HRC fuse base, 1-pole
LV HRC contact covers
LV HRC fuse link
LV HRC signal detectors
LV HRC partitions
LV HRC protective covers
LV HRC fuse bases with swivel mechanisms,
- For screw mounting on mounting plate
- For screw fixing on busbar systems
- For claw fixing on busbars
LV HRC protective cover for LV HRC fuse bases
with swivel mechanism
LV HRC swivel mechanisms
LV HRC fuse base covers
LV HRC isolating links with insulated grip lugs
LV HRC isolating links with live grip lugs
LV HRC fuse pullers with sleeve
LV HRC fuse pullers
123456789
10
11
12
13
14
15
16
17
18
19
LV10-1_THB_05_EN.book Seite 43 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012 I201_13743a
Fuse Systems
LV HRC Fuse Systems
LV HRC fuse links, 3NA, 3ND
44 Siemens · 2012
■Technical specifications
■Dimensional drawings
LV HRC fuse links, operational class gG
LV HRC fuse links
Operational class Operational
class
gG aM
3NA6 ...-4 3NA6 ... 3NA3 ... 3NA6 ...-6 3NA3 ...-6 3ND1
3NA6 ...-4KK 3NA6 ...-7 3NA3 ...-7 3NA7 ...-6 3ND2
3NA3 83.-8 3NA7 ...
3NA7 ...-7
Standards IEC 60269-1, -2; EN 60269-1; DIN VDE 0636
Approvals DIN VDE 0636-2; CSA 22.2 No.106, File Number 016325_0_00 (CSA approval of fuses 500 V for 600 V)
Rated voltage Un
• Sizes 000 and 00 V AC 400 500 500 690 690 500
V DC -- 250 250 250 250 --
• Sizes 1 and 2 V AC 400 500 500 690 690 690
V DC -- 440 440 440 440 --
• Size 3 V AC 500 690 690
V DC 440 440
• Sizes 4 and 4a (IEC design) V AC 500 --
V DC 400 --
Rated current In A 10 ... 400 2 ... 400 2 ... 1250 2 ... 315 2 ... 500 6 ... 630
Rated breaking capacity kA AC 120
kA DC -- 25 --
Contact pins Non-corroding, silver-plated
Resistance to climate °C -20 ... +50 at 95 % relative humidity
Sizes In Un Type Dimensions
A V b h1 h2 t1 t2
Sizes 000 to 3 and 4a 000 2 ... 35 690 AC/250 DC 3NA3 8..-6 21 54 80 45 8
2 ... 160 500 AC 3NA3 8../-8
2 ... 100 500 AC/250 DC 3NA6 8..
10 ... 100 400 AC 3NA6 8..-4
2 ... 35 690 AC/250 DC 3NA6 8..-6
10 ... 100 500 AC/250 DC 3NA7 8..
2 ... 35 690 AC/250 DC 3NA7 8..-6
00 35 ... 160 500 AC/250 DC 3NA3 8.. 30 54 80 45 14
40 ... 100 690 AC/250 DC 3NA3 8..-6
80 ... 160 500 AC/250 DC 3NA6 8../-7
80 ... 160 400 AC 3NA6 8..-4 (KK)
40 ... 100 690 AC/250 DC 3NA6 8..-6
80 ... 160 500 AC/250 DC 3NA7 8../-7
40 ... 100 690 AC/250 DC 3NA7 8..-6
Size 4 (IEC design) 0 6 ... 160 500 AC/440 DC 3NA3 0.. 30 67 126 45 14
t1
I2_10899
t2
LV10-1_THB_05_EN.book Seite 44 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
b h1 h2
Fuse Systems
LV HRC Fuse Systems
LV HRC fuse links, 3NA, 3ND
45 Siemens · 2012
LV HRC fuse links, operational class aM
1 16 ... 160 500 AC/440 DC 3NA3 1.. 30 75 137 50 15
50 ... 160 690 AC/440 DC 3NA3 1..-6
16 ... 160 500 AC/440 DC 3NA6 1..
35 ... 160 400 AC 3NA6 1..-4
50 ... 160 690 AC/440 DC 3NA6 1..-6
16 ... 160 500 AC/440 DC 3NA7 1..
50 ... 160 690 AC/440 DC 3NA7 1..-6
200 ... 250 500 AC/440 DC 3NA3 1.. 47 75 137 51 9
200 690 AC/440 DC 3NA3 1..-6
200 ... 250 500 AC/440 DC 3NA6 1..
200 ... 250 400 AC 3NA6 1..-4
200 690 AC/440 DC 3NA6 1..-6
200 ... 250 500 AC/440 DC 3NA7 1..
200 690 AC/440 DC 3NA7 1..-6
2 35 ... 250 500 AC/440 DC 3NA3 2.. 47 75 151 58 10
80 ... 200 690 AC/440 DC 3NA3 2..-6
35 ... 250 500 AC/440 DC 3NA6 2..
50 ... 250 400 AC 3NA6 2..-4
80 ... 200 690 AC/440 DC 3NA6 2..-6
35 ... 250 500 AC/440 DC 3NA7 2..
80 ... 200 690 AC/440 DC 3NA7 2..-6
300 ... 400 500 AC/440 DC 3NA3 2.. 58 74 151 59 13
224 ... 250 690 AC/440 DC 3NA3 2..-6
300 ... 400 500 AC/440 DC 3NA6 2..
300 ... 400 400 AC 3NA6 2..-4
224 ... 315 690 AC/440 DC 3NA6 2..-6
300 ... 400 500 AC/440 DC 3NA7 2..
224 ... 315 690 AC/440 DC 3NA7 2..-6
3 200 ... 400 500 AC/440 DC 3NA3 3.. 58 74 151 71 13
250, 315 690 AC/440 DC 3NA3 3..-6
425 ... 630 500 AC/440 DC 3NA3 3.. 71 74 151 70 13
355 ... 500 690 AC/440 DC 3NA3 3..-6
4 630 ... 1250 500 AC/440 DC 3NA3 4.. See adjacent drawing
4a 500 ... 1250 500 AC/440 DC 3NA3 6.. 102 97 201 95 20
I2_11335
65 55
Sizes In Un Type Dimensions
Size 000 to 3 A V b h1 h2 t1 t2
000 6 ... 80 500 AC 3ND1 8.. 21 54 80 45 8
00 100 ... 160 30 54 80 45 14
1 63 ... 100 690 AC 3ND2 1.. 30 75 137 50 15
125 ... 250 47 75 137 51 9 2 125 ... 250 690 AC 3ND2 2.. 47 75 151 58 10
315 ... 400 58 74 151 59 13
3 315 ... 400 690 AC 3ND2 3.. 58 74 151 71 13
500, 630 3ND1 3.. 71 74 151 70 13
t1
I2_10899
t2
LV10-1_THB_05_EN.book Seite 45 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
202
90 102
b h1 h2
Fuse Systems
LV HRC Fuse Systems
LV HRC signal detectors, 3NX1
46 Siemens · 2012
■ Overview
LV HRC signal detectors are used for remotely indicating that the
LV HRC fuse links have been tripped. 3 different solutions are
available:
• 3NX1 021 signal detectors with signal detector link
The LV HRC signal detectors with signal detector link support
monitoring of LV HRC fuse links with non-insulated grip lugs of
sizes 000 to 4 at 10 A or more. The signal detector link is
connected in parallel to the LV HRC fuse link. In the event of a
fault, the LV HRC fuse links are released simultaneously with
the LV HRC fuse signaling link. A tripping pin switches a
floating microswitch
• 3NX1 024 signal detector top
The signal detector top can be used with LV HRC fuse links,
sizes 000, 00, 1 and 2, which are equipped with non-insulated
grip lugs and have a front indicator or combination alarm. It is
simply plugged into the grip lugs
• 5TT3 170 fuse monitors
If a fuse is tripped, the front indicator springs open and
switches a floating microswitch. This solution should not be
used for safety-relevant plants. For this purpose, we
recommend our electronic fuse monitors.
■Dimensional drawings
■Schematics
Diagrams
LV HRC signal detectors Signal detector links
3NX1 021 3NX1 022, 3NX1 023
Signal detector tops Fuse monitors
3NX1 024 5TT3 170
40
11
64
43 5
15
L1 L2 L3
14
L1L2 L3
36
LV HRC signal detectors
Signal detector top
Fuse monitors
3NX1 021
3NX1 024
5TT3 170
N NO NC
L3 L1 L2 14
L1' L2' L3' 13
LV10-1_THB_05_EN.book Seite 46 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
115
I2_07856a
25
15
I2_07857a
7
66
I201_11512
90
45
Fuse Systems
LV HRC Fuse Systems
LV HRC fuse bases and accessories,
3NH3, 3NG1, 3NX
47 Siemens · 2012
■ Overview
Terminals for all applications
Flat terminals with screws are suitable for connecting busbars or
cable lugs. They have a torsion-proof screw connection with
shim, spring washer and nut. When tightening the nut, always
ensure compliance with the specified torque due to the
considerable leverage effect.
The double busbar terminal differs from the flat terminal in that it
supports connection of two busbars, one on the top and one at
the bottom of the flat terminal.
The modern box terminal ensures efficient and
reliable connection to the conductors. They support connection
of conductors with or without end sleeves.
With the flat terminal with nut, the terminal lug of the nut is
torsion-proof. When tightening the nut, the torque must be
observed because of the considerable leverage effect.
Up to three conductors can be clamped to the terminal strip.
The plug-in terminal is equipped for connecting two conductors. One conductor can be clamped to the saddle-type terminal.
© Siemens AG 2012
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
48 Siemens · 2012
■Technical specifications
1) Extended rated voltage up to 1000 V (except LV HRC bus-mounting bases).
LV HRC fuse bases, LV HRC bus-mounting bases
Size 000/00 0 1 2 3 4
Standards IEC 60269-1, -2; EN 60269-1; DIN VDE 0636-2
Rated current In A 160 160 250 400 630 1250
Rated voltage Un V AC 6901) 6901) 690
V DC 250 440 440
Rated short-circuit strength kA AC 120
kA DC 25
Flat terminal
Screw M8 M10 M12
Nut M8 --
Max. tightening torque Nm 14 38 65
Plug-in terminal
Conductor cross-section mm2 2.5 ... 50 --
Saddle-type terminal
Conductor cross-section mm2 6 ... 70 --
Box terminals
Conductor cross-section mm2 2.5 ... 50
Terminal strips
Conductor cross-section, 3-wire mm2 1.5 ... 16 --
Max. torque
for attachment of LV HRC fuse base
Nm 2 2.5 --
LV HRC fuse bases with swivel mechanism
Size 000/00 1 3 4a
Rated voltage Un V AC 690
V DC 440
Power loss W 4 5 20 32
Flat terminal
Screw M8 M10 M12 M16
Nut M8 --
Max. tightening torque Nm 14 38 65
LV10-1_THB_05_EN.book Seite 48 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
49 Siemens · 2012
■Dimensional drawings
LV HRC bases made of molded plastic
LV HRC bases made of ceramic
Size 000/00, 1P
3NH3 051 to 3NH3 053
Sizes In Poles Connection Type b1 b2 h1 h2 h3 h4 h5 h6 ∅ l t1 t2 t3 t4 A
000/00 160 1P M8 flat terminals, screw 3NH3 051 23 39 61 61 25 101 121 139 7.5 26 42 61 86
Saddle-type terminal 3NH3 052 -- 39 60 60 25 108 120 139 7.5 26 42 61 86
125 Box terminals 3NH3 053 -- 39 59 50 25 99 117 139 7.5 23 39 61 86
b2b1 t2 t3 t1 t4
4,5
øl
3NX3 023
partition
Size 000/00
1P 3P
3NH3 03., 3NH3 050 3NH4 03.
Sizes In Poles Connection Type b1 b2 b3 h1 h2 h3 h4 h5 h6 ∅ l t1 t2 t3 t4 A
000/00 160 1P Flat terminal, screw 3NH3 030 23 34 -- 61 61 25 102 122 139 7.5 24 40 60 86
M8 plug-in terminal 3NH3 031 31 34 -- 64 64 25 102 128 139 7.5 24 40 60 86
Saddle-type terminal 3NH3 032 29 34 -- 61 61 25 109 122 139 7.5 24 40 60 86
Flat terminal, terminal strip 3NH3 035 26 34 -- 61 70 25 113 130 139 7.5 24 40 60 86
Flat terminal, nut 3NH3 038 23 34 -- 61 61 25 102 122 139 7.5 24 40 60 86
Flat and saddle-type
terminals
3NH3 050 29 34 -- 61 61 25 102 122 139 7.5 24 40 60 86
3P Flat terminal 3NH4 030 23 102 70 61 61 25 102 122 139 7.5 24 40 60 86
M8 plug-in terminal 3NH4 031 31 102 70 64 64 25 102 128 139 7.5 24 40 60 86
Saddle-type terminal 3NH4 032 29 102 70 61 61 25 102 122 139 7.5 24 40 60 86
Flat terminal, terminal strip 3NH4 035 26 102 70 61 70 25 113 130 139 7.5 24 40 60 86
t2 t3 t1 t4 b2 b1
øl
3NX3 023
partition
b2b1 b3 t2 t3 t1 t4
øl
LV10-1_THB_05_EN.book Seite 49 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
h4 h5 h6 h1 h3 h2
I2_15447
h4 h5 h6 h1 h3 h2
I2_15449
h4 h5 h6 h1 h3 h2
I2_15448
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
50 Siemens · 2012
Size 0, 1P
3NH3 12.
t2 t3 t1 t4 b2 b1
øl
3NX2 030
partition
Sizes In Poles Connection Type b1 b2 h1 h2 h3 h4 h5 h6 ∅ l t1 t2 t3 t4 A 0 160 1P Flat terminal 3NH3 120 23 38 87 87 25 150 173 179 7.5 24 40 60 88
Plug-in terminal 3NH3 122 31 38 87 87 25 150 173 179 7.5 24 40 60 88
Size 1
1P 3P
3NH3 2.0 3NH4 230
Sizes In Poles Connection Type b1 b2 b3 h1 h2 h3 h4 h5 h6 ∅ l t1 t2 t3 t4 A 1 250 1P M10 flat terminal 3NH3 230 35 49 30 101 101 25 177 202 203 10.5 35 55 84 107
Double busbar terminal 3NH3 220 35 49 30 101 101 25 177 202 203 10.5 35 55 84 107
3P M10 flat terminal 3NH4 230 35 146 111 101 101 25 177 202 203 10.5 35 55 84 107
b2 b1b3 t2 t3 t1 t4
øl 3NX2 024
partition
b2 b1 t2 t3 t1 t4 b3
øl
LV10-1_THB_05_EN.book Seite 50 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
h4 h5 h6 h1 h3 h2
I2_15450
h4 h5 h6 h1 h3 h2
I2_15451
h4 h5 h6 h1 h3 h2
I2_15452
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
51 Siemens · 2012
1) Size 4 LV HRC fuse links are also screwed onto the base.
Size 2
1P
Size 3
1P
3NH3 3.0 3NH3 4.0
Sizes In Poles Connection Type b1 b2 b3 h1 h2 h3 h4 h5 h6 ∅ l t1 t2 t3 t4 A 2 400 1P M10 flat terminal 3NH3 330 35 49 30 113 113 25 202 227 228 10.5 35 55 90 115
Double busbar terminal 3NH3 320 35 49 30 113 113 25 202 227 228 10.5 35 55 90 115
3 630 1P M12 flat terminal 3NH3 430 35 49 30 121 121 25 212 242 242 10.5 35 57 101 130
Double busbar terminal 3NH3 420 35 49 30 121 121 25 212 242 242 10.5 35 57 101 130
b2 b1b3 t2 t3 t1 t4
øl
3NX2 025
partition
b2 b1 b3
øl
t2 t3 t1 t4
3NX2 026
partition
Size 4, 1P
3NH3 530
Sizes In Poles Connection Type b1 b2 b3 h1 h2 h3 h4 h5 ∅ l t1 t2 t3 A 41) 1250 1P M12 flat terminal 3NH3 530 50 102 30 156 156 25 270 312 13 51 116 144
4a Can only be used in bases with swivel mechanism
øl
b2 b1 b3 t2t3 t1
LV10-1_THB_05_EN.book Seite 51 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
h4 h5 h6 h1 h3 h2
I2_15453
h = h 5 6 h4 h1 h3 h2
I2_15454
h1 h3 h5 h4 h2
I2_15455
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
52 Siemens · 2012
LV HRC bus-mounting bases1) LV HRC bases with tandem design
1) LV HRC bus-mounting bases are only connected on one side using
terminals, the second connection is made through the bottom of the base.
LV HRC fuse bases with swivel mechanism
Size 000/00, 160 A
1P
Size 000/00, 80 A
3P
3NH3 036, 3NH3 037 Busbar center-to-center clearance 40 mm
3NH4 037, 3NH4 045
91
44
64
28 29
37
3NX2 027
phase barrier
33 33
107 44
91
28
Sizes 000/00, 1, 3 and 4a
3NH7 03., 3NH7 23., 3NH7 33., 3NH7 520
Sizes In Type a b c d e l m n o A
000/
00
160 3NH7 030,
3NH7 031,
3NH7 032
49 149 45 88.5 22.5 120 17 18 200
1 250 3NH7 230,
3NH7 231,
3NH7 232
68 230 68 123.5 23 177 25 40 300
3 630 3NH7 330,
3NH7 331,
3NH7 332
90 270 96 153.5 15.5 220.5 30.5 35 350
4a 1250 3NH7 520 116 350 154.5 217.5 69 270 40 26 440
a o d c m
LV10-1_THB_05_EN.book Seite 52 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
95
114
22
I2_15456
I2_06498a
213,5
230
I2_11357
e b l n
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
53 Siemens · 2012
LV HRC contact covers for LV HRC fuse bases and
LV HRC bus-mounting bases1)
Size 000/00 to 3
3NX3 105 to 3NX3 108, 3NX3 114
Sizes Type a b c d e
000/00 3NX3 1051) 38 47.5 34 11.5 30
0 3NX3 114 51.5 47.5 34 11.5 30
1 3NX3 106 61.5 57 42.5 35 46
2 3NX3 107 74 65 51 35 46
3 3NX3 108 81.5 77.5 57.5 35 46
1) The 3NX3 105 LV HRC contact covers can be used for both LV HRC fuse
bases and LV HRC bus-mounting bases.
LV HRC contact covers for LV HRC bus-mounting bases
3NX3 113 for the incoming terminal, dimensional drawing 3NX3 105, for the
outgoing terminal see dimensional drawing above
3NX3 115 LV HRC protective covers, with 3NX3 116 LV HRC covers
Size 000/00, degree of protection IP2X
c b e
50 30
I2_11368
LV HRC partitions for LV HRC bases
Size 000/00
3NX3 023
Sizes 0 to 3
3NX2 030, 3NX2 024 to 3NX2 026
Sizes Type a b c d 0 3NX2 030 87.6 178.5 7.7 12.3
1 3NX2 024 107.3 202.5 7.7 12.3
2 3NX2 025 115.3 227.5 14.2 25.1
3 3NX2 026 129.8 242 20.2 37.2
86 6,2
1,65
3,5 16,1
Spacer
Partition
I2_06492a
a
14,3
c
1,6
d
Spacer
Partition
I2_06493a
LV HRC partitions for LV HRC bus-mounting bases
Size 000/00
Phase barrier End barrier For LV HRC bus-mounting bases in tandem design
3NX2 027 3NX2 028 3NX2 031
82
87
I2_06502b
81,5
LV10-1_THB_05_EN.book Seite 53 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
I2_11365a
d a 11,5
138,5
36,5
31
b
41,3
55,8
35
114
I2_06499a
114
230
I2_06684a
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
54 Siemens · 2012
Fuse pullers
Sizes 000 to 4
3NX1 013 (without sleeve), 3NX1 014 (with sleeve)
24
66
350
92,5
26
I2_06503a
Sleeve
Isolating blades with insulated grip lugs
Size 000/00 to 3
3NG1 .02
I2_06490
bh c 3,5
Sizes Type a b c d e f g h
000/00 3NG1 002 44 15 48 78 54 20.5 8 19
0 3NG1 102 60.5 15 48 125 68 20.5 8 19
1 3NG1 202 61 20 53 135 72 23 9 24
2 3NG1 302 61 26 61 150 72 23 9 29
3 3NG1 402 61 32 73 150 72 23 9 36
Isolating blades with non-insulated grip lugs
Size 4 Size 4a
3NG1 503 3NG1 505
I2_06511a
32
50
85
105
50
85
105
9
I2_06685a
LV10-1_THB_05_EN.book Seite 54 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012 27,5 47,5 68 125 130 136 aed g 136f 8 68 200 30 150 16 61
6
40
53,5 88
197
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
55 Siemens · 2012
■ More information
Space requirements when installing LV HRC fuse bases
1) This measurement specifies the required overall mounting depth with base
d and the overall mounting height h.
2) Placing an additional base on the barrier and plug-on part does not
increase the distance, rather the bases lie flat directly on top of one
another.
3) If the bases are installed directly on a side wall in the distribution board,
one spacer part can be broken off. This would reduce the distance
measurement.
1 LV HRC fuse base, 3P 3 LV HRC fuse bases, 1P LV HRC partitions
Sizes Mounting width (mm) of LV HRC fuse bases Mounting
height (mm)
Mounting
depth (mm)
1 unit, 3P 3 units, 1P Distance
through spacer
3NX2 0.. partitions with
matching bases1)
Bases with phase
barrier, without end
barrier
Bases with phase
barrier and 2 end
barriers
Bases with phase
barrier, without end
barrier
Bases with phase
barrier and 2 end
barriers h d
000/00 102 106 100 1042) 2 138 86
LV HRC bus-mounting bases see page 52 – 114 90
0 -- -- 128 142 7 178 90
1 163 177 158 172 7 202 110
2 -- -- 184 224 203) 227 118
3 -- -- 208 272 323) 242 132
4 Installation without barriers; for mounting see page 52 n/a
4a Can only be used in bases with swivel mechanism n/a
Partition
Spacer
d
Space requirements when installing
LV HRC bus-mounting bases
Space requirements for 3-piece, 1-pole 3NH3 036 and 3NH3 037 LV HRC
bus-mounting bases, staggered
82
71
38
LV10-1_THB_05_EN.book Seite 55 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
I2_11361
I2_11362
I2_11363 h
I2_11364
Saddle-type terminal connection: 175
Terminal strip: 182
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
56 Siemens · 2012
■Characteristic curves
Series 3NA3 0
Size: 0
Operational class: gG
Rated voltage: 500 V AC/440 V DC
Rated current: 6 ... 160 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Type In Pv Δϑ I2ts
1 ms 4 ms
A W K A2s A2s
3NA3 001 6 1.5 6 46 50
3NA3 003 10 1 9 120 130
3NA3 005 16 1.9 11 370 420
3NA3 007 20 2.3 13 670 750
3NA3 010 25 2.7 15 1200 1380
3NA3 012 32 3 13 2200 2400
3NA3 014 35 3 17 3000 3300
3NA3 017 40 3.4 17 4000 4500
3NA3 020 50 4.5 24 6000 6800
3NA3 022 63 5.8 27 7700 9800
3NA3 024 80 7 34 12000 16000
3NA3 030 100 8.2 37 24000 30600
3NA3 032 125 10.2 38 36000 50000
3NA3 036 160 13.5 44 58000 85000
Type I2ta
230 V AC 400 V AC 500 V AC
A2s A2s A2s
3NA3 001 80 110 150
3NA3 003 180 265 370
3NA3 005 580 750 1000
3NA3 007 1000 1370 1900
3NA3 010 1800 2340 3300
3NA3 012 3400 4550 6400
3NA3 014 4900 6750 9300
3NA3 017 6100 8700 12100
3NA3 020 9100 11600 16000
3NA3 022 14200 19000 26500
3NA3 024 23100 30700 43000
3NA3 030 40800 56200 80000
3NA3 032 70000 91300 130000
3NA3 036 120000 158000 223000
LV10-1_THB_05_EN.book Seite 56 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
57 Siemens · 2012
Series 3NA3 1, 3NA6 1, 3NA7 1
Size: 1
Operational class: gG
Rated voltage: 500 V AC/440 V DC
Rated current: 16 ... 250 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Type In Pv Δϑ I2ts
1 ms 4 ms
A W K A2s A2s
3NA3 105, 3NA6 105, 3NA7 105 16 2.1 8 370 420
3NA3 107, 3NA6 107, 3NA7 107 20 2.4 10 670 750
3NA3 110, 3NA6 110, 3NA7 110 25 2.8 11 1200 1380
3NA3 114, 3NA6 114, 3NA7 114 35 3.2 16 3000 3300
3NA3 117, 3NA6 117, 3NA7 117 40 3.6 16 4000 4500
3NA3 120, 3NA6 120, 3NA7 120 50 4.6 20 6000 6800
3NA3 122, 3NA6 122, 3NA7 122 63 6 21 7700 9800
3NA3 124, 3NA6 124, 3NA7 124 80 7.5 29 12000 16000
3NA3 130, 3NA6 130, 3NA7 130 100 8.9 30 24000 30600
3NA3 132, 3NA6 132, 3NA7 132 125 10.7 31 36000 50000
3NA3 136, 3NA6 136, 3NA7 136 160 13.9 34 58000 85000
3NA3 140, 3NA6 140, 3NA7 140 200 15 36 115000 135000
3NA3 142, 3NA6 142, 3NA7 142 224 16.1 37 145000 170000
3NA3 144, 3NA6 144, 3NA7 144 250 17.3 39 205000 230000
Type I2ta
230 V AC 400 V AC 500 V AC
A2s A2s A2s
3NA3 105, 3NA6 105, 3NA7 105 580 750 1000
3NA3 107, 3NA6 107, 3NA7 107 1000 1370 1900
3NA3 110, 3NA6 110, 3NA7 110 1800 2340 3300
3NA3 114, 3NA6 114, 3NA7 114 4900 6750 9300
3NA3 117, 3NA6 117, 3NA7 117 6100 8700 12100
3NA3 120, 3NA6 120, 3NA7 120 9100 11600 16000
3NA3 122, 3NA6 122, 3NA7 122 14200 19000 26500
3NA3 124, 3NA6 124, 3NA7 124 23100 30700 43000
3NA3 130, 3NA6 130, 3NA7 130 40800 56200 80000
3NA3 132, 3NA6 132, 3NA7 132 70000 91300 130000
3NA3 136, 3NA6 136, 3NA7 136 120000 158000 223000
3NA3 140, 3NA6 140, 3NA7 140 218000 285000 400000
3NA3 142, 3NA6 142, 3NA7 142 299000 392000 550000
3NA3 144, 3NA6 144, 3NA7 144 420000 551000 780000
LV10-1_THB_05_EN.book Seite 57 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
58 Siemens · 2012
Series 3NA3 1..-6, 3NA6 1..-6, 3NA7 1..-6
Size: 1
Operational class: gG
Rated voltage: 690 V AC/440 V DC
Rated current: 50 ... 200 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2ts values diagram
Type In Pv Δϑ I2ts
1 ms 4 ms
A W K A2s A2s
3NA3 120-6, 3NA6 120-6, 3NA7 120-6 50 6.7 21 440 7400
3NA3 122-6, 3NA6 122-6, 3NA7 122-6 63 7.6 22 7600 10100
3NA3 124-6, 3NA6 124-6, 3NA7 124-6 80 6.7 22 13500 17000
3NA3 130-6, 3NA6 130-6, 3NA7 130-6 100 8.7 28 21200 30500
3NA3 132-6, 3NA6 132-6, 3NA7 132-6 125 10.5 29 36000 50000
3NA3 136-6, 3NA6 136-6, 3NA7 136-6 160 13.8 33 58000 85000
3NA3 140-6, 3NA6 140-6, 3NA7 140-6 200 16.6 35 132000 144000
Type I2ta
230 V AC 400 V AC 690 V AC
A2s A2s A2s
3NA3 120-6, 3NA6 120-6, 3NA7 120-6 9100 11200 1900
3NA3 122-6, 3NA6 122-6, 3NA7 122-6 13600 17000 24000
3NA3 124-6, 3NA6 124-6, 3NA7 124-6 24300 32000 55000
3NA3 130-6, 3NA6 130-6, 3NA7 130-6 42400 52000 75000
3NA3 132-6, 3NA6 132-6, 3NA7 132-6 69500 82200 130000
3NA3 136-6, 3NA6 136-6, 3NA7 136-6 120000 155000 223000
3NA3 140-6, 3NA6 140-6, 3NA7 140-6 211000 240000 360000
LV10-1_THB_05_EN.book Seite 58 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
59 Siemens · 2012
Series 3NA3 2, 3NA6 2, 3NA7 2
Size: 2
Operational class: gG
Rated voltage: 500 V AC/440 V DC
Rated current: 35 ... 400 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Type In Pv Δϑ I2ts
1 ms 4 ms
A W K A2s A2s
3NA3 214, 3NA6 214, 3NA7 214 35 3.2 12 3000 3300
3NA3 220, 3NA6 220, 3NA7 220 50 4.7 16 6000 6800
3NA3 222, 3NA6 222, 3NA7 222 63 5.9 16 7700 9800
3NA3 224, 3NA6 224, 3NA7 224 80 6.8 21 12000 16000
3NA3 230, 3NA6 230, 3NA7 230 100 7.4 22 24000 30600
3NA3 232, 3NA6 232, 3NA7 232 125 9.8 27 36000 50000
3NA3 236, 3NA6 236, 3NA7 236 160 12.6 34 58000 85000
3NA3 240, 3NA6 240, 3NA7 240 200 14.9 33 115000 135000
3NA3 242, 3NA6 242, 3NA7 242 224 15.4 31 145000 170000
3NA3 244, 3NA6 244, 3NA7 244 250 17.9 38 205000 230000
3NA3 250, 3NA6 250 300 19.4 34 361000 433000
3NA3 252, 3NA6 252, 3NA7 252 315 21.4 35 361000 433000
3NA3 254, 3NA6 254 355 26.0 49 441000 538000
3NA3 260, 3NA6 260, 3NA7 260 400 27.5 52 529000 676000
Type I2ta
230 V AC 400 V AC 500 V AC
A2s A2s A2s
3NA3 214, 3NA6 214, 3NA7 214 4900 6750 9300
3NA3 220, 3NA6 220, 3NA7 220 9100 11600 16000
3NA3 222, 3NA6 222, 3NA7 222 14200 19000 26500
3NA3 224, 3NA6 224, 3NA7 224 23100 30700 43000
3NA3 230, 3NA6 230, 3NA7 230 40800 56200 80000
3NA3 232, 3NA6 232, 3NA7 232 70000 91300 130000
3NA3 236, 3NA6 236, 3NA7 236 120000 158000 223000
3NA3 240, 3NA6 240, 3NA7 240 218000 285000 400000
3NA3 242, 3NA6 242, 3NA7 242 299000 392000 550000
3NA3 244, 3NA6 244, 3NA7 244 420000 551000 780000
3NA3 250, 3NA6 250 670000 901000 1275000
3NA3 252, 3NA6 252, 3NA7 252 670000 901000 1275000
3NA3 254, 3NA6 254 800000 1060000 1500000
3NA3 260, 3NA6 260, 3NA7 260 1155000 1515000 2150000
LV10-1_THB_05_EN.book Seite 59 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
60 Siemens · 2012
Series 3NA3 2..-6, 3NA6 2..-6, 3NA7 2..-6
Size: 2
Operational class: gG
Rated voltage: 690 V AC/440 V DC
Rated current: 80 ... 315 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Type In Pv Δϑ I2ts
1 ms 4 ms
A W K A2s A2s
3NA3 224-6, 3NA6 224-6, 3NA7 224-6 80 6.6 22 13500 17000
3NA3 230-6, 3NA6 230-6, 3NA7 230-6 100 8.5 26 21200 30500
3NA3 232-6, 3NA6 232-6, 3NA7 232-6 125 9.8 29 36000 50000
3NA3 236-6, 3NA6 236-6, 3NA7 236-6 160 13.3 31 58000 85000
3NA3 240-6, 3NA6 240-6, 3NA7 240-6 200 16.1 33 132000 144000
3NA3 242-6, 3NA6 242-6, 3NA7 242-6 224 19.9 38 125000 162000
3NA3 244-6, 3NA6 244-6, 3NA7 244-6 250 23 44 180000 215000
3NA3 250-6, 3NA6 250-6, 3NA7 250-6 300 25.6 38 300000 380000
3NA3 252-6, 3NA6 252-6, 3NA7 252-6 315 28.2 42 300000 380000
Type I2ta
230 V AC 400 V AC 690 V AC
A2s A2s A2s
3NA3 224-6, 3NA6 224-6, 3NA7 224-6 24300 32000 55000
3NA3 230-6, 3NA6 230-6, 3NA7 230-6 42400 52000 75000
3NA3 232-6, 3NA6 232-6, 3NA7 232-6 69500 82200 130000
3NA3 236-6, 3NA6 236-6, 3NA7 236-6 120000 155000 223000
3NA3 240-6, 3NA6 240-6, 3NA7 240-6 211000 240000 360000
3NA3 242-6, 3NA6 242-6, 3NA7 242-6 300000 300000 450000
3NA3 244-6, 3NA6 244-6, 3NA7 244-6 453000 350000 525000
3NA3 250-6, 3NA6 250-6, 3NA7 250-6 480000 625000 940000
3NA3 252-6, 3NA6 252-6, 3NA7 252-6 480000 625000 940000
LV10-1_THB_05_EN.book Seite 60 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
61 Siemens · 2012
Series 3NA3 3
Size: 3
Operational class: gG
Rated voltage: 500 V AC/440 V DC
Rated current: 200 ... 630 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Type In Pv Δϑ I2ts
1 ms 4 ms
A W K A2s A2s
3NA3 340 200 14.9 32 115000 135000
3NA3 342 224 15.4 31 145000 170000
3NA3 344 250 17.9 36 205000 230000
3NA3 350 300 19.4 19 361000 433000
3NA3 352 315 21.4 22 361000 433000
3NA3 354 355 26.0 26 441000 538000
3NA3 360 400 27.5 28 529000 676000
3NA3 362 425 26.5 34 650000 970000
3NA3 365 500 36.5 41 785000 1270000
3NA3 372 630 44.0 50 1900000 2700000
Type I2ta
230 V AC 400 V AC 500 V AC
A2s A2s A2s
3NA3 340 218000 285000 400000
3NA3 342 299000 392000 550000
3NA3 344 420000 551000 780000
3NA3 350 670000 901000 1275000
3NA3 352 670000 901000 1275000
3NA3 354 800000 1060000 1500000
3NA3 360 1155000 1515000 2150000
3NA3 362 1515000 1856000 2270000
3NA3 365 1915000 2260000 2700000
3NA3 372 3630000 4340000 5400000
LV10-1_THB_05_EN.book Seite 61 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
62 Siemens · 2012
Series 3NA3 3..-6
Size: 3
Operational class: gG
Rated voltage: 690 V AC/440 V DC
Rated current: 250 ... 500 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Type In Pv Δϑ I2ts
1 ms 4 ms
A W K A2s A2s
3NA3 344-6 250 23 44 180000 215000
3NA3 352-6 315 28.2 42 300000 380000
3NA3 354-6 355 32.5 40 380000 470000
3NA3 360-6 400 33.2 42 540000 675000
3NA3 362-6 425 35.3 44 625000 765000
3NA3 365-6 500 43.5 52 810000 1000000
Type I2ta
230 V AC 400 V AC 690 V AC
A2s A2s A2s
3NA3 344-6 453000 350000 525000
3NA3 352-6 480000 625000 940000
3NA3 354-6 585000 760000 1150000
3NA3 360-6 847000 1100000 1650000
3NA3 362-6 925000 1200000 1800000
3NA3 365-6 1300000 1700000 2500000
LV10-1_THB_05_EN.book Seite 62 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
63 Siemens · 2012
Series 3NA3 4
Size: 4 (IEC design)
Operational class: gG
Rated voltage: 500 V AC/440 V DC
Rated current: 630 ... 1250 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Type In Pv Δϑ I2ts
1 ms 4 ms
A W K A2s A2s
3NA3 472 630 47 37 1900000 2700000
3NA3 475 800 59 43 3480000 5620000
3NA3 480 1000 74 56 7920000 10400000
3NA3 482 1250 99 65 11880000 18200000
Type I2ta
230 V AC 400 V AC 500 V AC
A2s A2s A2s
3NA3 472 3630000 4340000 5400000
3NA3 475 7210000 8510000 10400000
3NA3 480 13600000 16200000 19000000
3NA3 482 23900000 29100000 34800080
LV10-1_THB_05_EN.book Seite 63 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
64 Siemens · 2012
Series 3NA3 6
Size: 4a
Operational class: gG
Rated voltage: 500 V AC/440 V DC
Rated current: 500 ... 1250 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Type In Pv Δϑ I2ts
1 ms 4 ms
A W K A2s A2s
3NA3 665 500 43 30 785000 1270000
3NA3 672 630 47 37 1900000 2700000
3NA3 675 800 59 43 3480000 5620000
3NA3 680 1000 74 56 7920000 10400000
3NA3 682 1250 99 65 11880000 18200000
Type I2ta
230 V AC 400 V AC 500 V AC
A2s A2s A2s
3NA3 665 1915000 2260000 2700000
3NA3 672 3630000 4340000 5400000
3NA3 675 7210000 8510000 10400000
3NA3 680 13600000 16200000 19000000
3NA3 682 23900000 29100000 34800000
LV10-1_THB_05_EN.book Seite 64 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
65 Siemens · 2012
Series 3NA3 8, 3NA6 8, 3NA7 8
Size: 000, 00
Operational class: gG
Rated voltage: 500 V AC/250 V DC
Rated current: 2 ... 160 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Table see page 66.
LV10-1_THB_05_EN.book Seite 65 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
66 Siemens · 2012
Series 3NA3 8, 3NA6 8, 3NA7 8
Size: 000, 00
Operational class: gG
Rated voltage: 500 V AC/250 V DC
Rated current: 2 ... 160 A
Type In Pv Δϑ I2ts I2ta
1 ms 4 ms 230 V AC 400 V AC 500 V AC
A W K A2s A2s A2s A2s A2s
3NA3 802, 3NA6 802, 3NA7 802 2 1.3 8 2 2 4 6 9
3NA3 804, 3NA6 804, 3NA7 804 4 0.9 6 11 13 18 22 27
3NA3 801, 3NA6 801, 3NA7 801 6 1.3 8 46 50 80 110 150
3NA3 803, 3NA6 803, 3NA7 803 10 1 8 120 130 180 265 370
3NA3 805, 3NA6 805, 3NA7 805 16 1.7 11 370 420 580 750 1000
3NA3 807, 3NA6 807, 3NA7 807 20 2 15 670 750 1000 1370 1900
3NA3 810, 3NA6 810, 3NA7 810 25 2.3 17 1 200 1380 1800 2340 3300
3NA3 812, 3NA6 812, 3NA7 812 32 2.6 18 2200 2400 3400 4550 6400
3NA3 814, 3NA3 814-7, 3NA6 814, 3NA7 814 35 2.7 21 3000 3300 4900 6750 9300
3NA3 817, 3NA6 817, 3NA7 817 40 3.1 24 4000 4500 6100 8700 12100
3NA3 820, 3NA3 820-7, 3NA6 820, 3NA7 820 50 3.8 25 6000 6800 9100 11600 16000
3NA3 822, 3NA3 822-7, 3NA6 822, 3NA7 822 63 4.6 28 7700 9800 14200 19000 26500
3NA3 824, 3NA3 824-7, 3NA6 824,
3NA6 824-7, 3NA7 824, 3NA7 824-7
80 5.8 33 12000 16000 23100 30700 43000
3NA3 830, 3NA3 830-7, 3NA6 830,
3NA6 830-7, 3NA7 830, 3NA7 830-7
100 6.6 34 24000 30600 40800 56200 80000
3NA3 832, 3NA6 832, 3NA7 832 125 8.9 44 36000 50000 70000 91300 130000
3NA3 832-8 125 7.2 30 46000 45000 97000 117000 134000
3NA3 836, 3NA6 836, 3NA7 836 160 11.3 52 58000 85000 120000 158000 223000
3NA3 836-8 160 9 34 89000 84800 137000 166000 --
LV10-1_THB_05_EN.book Seite 66 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
67 Siemens · 2012
Series 3NA3 8..-6, 3NA6 8..-6, 3NA7 8..-6
Size: 000, 00
Operational class: gG
Rated voltage: 690 V AC/250 V DC
Rated current: 2 ... 100 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Type In Pv Δϑ I2ts
1 ms 4 ms
A W K A2s A2s
3NA3 802-6, 3NA6 802-6, 3NA7 802-6 2 1.3 8 2 2
3NA3 804-6, 3NA6 804-6, 3NA7 804-6 4 0.9 6 11 13
3NA3 801-6, 3NA6 801-6, 3NA7 801-6 6 1.3 8 36 44
3NA3 803-6, 3NA6 803-6, 3NA7 803-6 10 1 8 90 120
3NA3 805-6, 3NA6 805-6, 3NA7 805-6 16 1.7 11 330 360
3NA3 807-6, 3NA6 807-6, 3NA7 807-6 20 2 15 570 690
3NA3 810-6, 3NA6 810-6, 3NA7 810-6 25 2.3 17 1200 1380
3NA3 812-6, 3NA6 812-6, 3NA7 812-6 32 3.1 19 1600 2600
3NA3 814-6, 3NA6 814-6, 3NA7 814-6 35 3.6 23 2100 3100
3NA3 817-6, 3NA6 817-6, 3NA7 817-6 40 3.6 18 3200 4700
3NA3 820-6, 3NA6 820-6, 3NA7 820-6 50 4.9 28 4400 7400
3NA3 822-6, 3NA6 822-6, 3NA7 822-6 63 5.7 33 7600 10100
3NA3 824-6, 3NA6 824-6, 3NA7 824-6 80 6.7 38 13500 17000
3NA3 830-6, 3NA6 830-6, 3NA7 830-6 100 9.1 40 21200 30500
Type I2ta
230 V AC 400 V AC 690 V AC
A2s A2s A2s
3NA3 802-6, 3NA6 802-6, 3NA7 802-6 4 6 9
3NA3 804-6, 3NA6 804-6, 3NA7 804-6 18 22 27
3NA3 801-6, 3NA6 801-6, 3NA7 801-6 80 110 150
3NA3 803-6, 3NA6 803-6, 3NA7 803-6 180 265 370
3NA3 805-6, 3NA6 805-6, 3NA7 805-6 580 750 1000
3NA3 807-6, 3NA6 807-6, 3NA7 807-6 1000 1370 1900
3NA3 810-6, 3NA6 810-6, 3NA7 810-6 1800 2340 3300
3NA3 812-6, 3NA6 812-6, 3NA7 812-6 3100 4100 5800
3NA3 814-6, 3NA6 814-6, 3NA7 814-6 4000 5000 7800
3NA3 817-6, 3NA6 817-6, 3NA7 817-6 6000 8600 12000
3NA3 820-6, 3NA6 820-6, 3NA7 820-6 9100 11200 19000
3NA3 822-6, 3NA6 822-6, 3NA7 822-6 13600 17000 24000
3NA3 824-6, 3NA6 824-6, 3NA7 824-6 24300 32000 55000
3NA3 830-6, 3NA6 830-6, 3NA7 830-6 42400 52000 75000
LV10-1_THB_05_EN.book Seite 67 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
68 Siemens · 2012
Series 3NA6 1..-4
Size: 1
Operational class: gG
Rated voltage: 400 V AC
Rated current: 35 ... 250 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Type In Pv Δϑ
A W K
3NA6 114-4 35 3.2 16
3NA6 117-4 40 3.6 16
3NA6 120-4 50 4.6 20
3NA6 122-4 63 6.0 21
3NA6 124-4 80 7.5 29
3NA6 130-4 100 8.9 30
3NA6 132-4 125 10.7 31
3NA6 136-4 160 13.9 34
3NA6 140-4 200 15.0 36
3NA6 142-4 224 16.1 37
3NA6 144-4 250 17.3 39
Type I2ts I2ta
1 ms 4 ms 230 V AC 400 V AC
A2s A2s A2s A2s
3NA6 114-4 3000 3300 4900 6750
3NA6 117-4 4000 4500 6100 8700
3NA6 120-4 6000 6800 9100 11600
3NA6 122-4 7700 9800 14200 19000
3NA6 124-4 12000 16000 23100 30700
3NA6 130-4 24000 30600 40800 56200
3NA6 132-4 36000 50000 70000 91300
3NA6 136-4 58000 85000 120000 158000
3NA6 140-4 115000 135000 218000 285000
3NA6 142-4 145000 170000 299000 392000
3NA6 144-4 205000 230000 420000 551000
LV10-1_THB_05_EN.book Seite 68 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
69 Siemens · 2012
Series 3NA6 2..-4
Size: 2
Operational class: gG
Rated voltage: 400 V AC
Rated current: 50 ... 400 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Type In Pv Δϑ
A W K
3NA6 220-4 50 4.7 16
3NA6 222-4 63 5.9 16
3NA6 224-4 80 6.8 21
3NA6 230-4 100 7.4 22
3NA6 232-4 125 9.8 27
3NA6 236-4 160 12.6 34
3NA6 240-4 200 14.9 33
3NA6 242-4 224 15.4 31
3NA6 244-4 250 17.9 38
3NA6 250-4 300 19.4 34
3NA6 252-4 315 21.4 35
3NA6 254-4 355 26.0 49
3NA6 260-4 400 27.5 52
Type I2ts I2ta
1 ms 4 ms 230 V AC 400 V AC
A2s A2s A2s A2s
3NA6 220-4 6000 6800 9100 11600
3NA6 222-4 7700 9800 14200 19000
3NA6 224-4 12000 16000 23100 30700
3NA6 230-4 24000 30600 40800 56200
3NA6 232-4 36000 50000 70000 91300
3NA6 236-4 58000 85000 120000 158000
3NA6 240-4 115000 135000 218000 285000
3NA6 242-4 145000 170000 299000 392000
3NA6 244-4 205000 230000 420000 551000
3NA6 250-4 361000 433000 670000 901000
3NA6 252-4 361000 433000 670000 901000
3NA6 254-4 441000 538000 800000 1060000
3NA6 260-4 529000 676000 1155000 1515000
LV10-1_THB_05_EN.book Seite 69 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
70 Siemens · 2012
Series 3NA6 8..-4/-4KK
Size: 000, 00
Operational class: gG
Rated voltage: 400 V AC
Rated current: 10 ... 160 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Type In Pv Δϑ I2ts
1 ms 4 ms
A W K A2s A2s
3NA6 803-4 10 1.0 8 120 130
3NA6 805-4 16 1.7 11 370 420
3NA6 807-4 20 2.0 15 670 750
3NA6 810-4 25 2.3 17 1200 1380
3NA6 812-4 32 2.6 18 2200 2500
3NA6 814-4 35 2.7 21 3000 3300
3NA6 817-4 40 3.1 24 4000 4500
3NA6 820-4 50 3.8 25 6000 6800
3NA6 822-4 63 3.9 23 9300 10250
3NA6 824-4, 3NA6 824-4KK 80 4.9 26 14200 18300
3NA6 830-4, 3NA6 830-4KK 100 5.4 29 25600 33600
3NA6 832-4 125 8.9 44 36000 50000
3NA6 836-4 160 11.3 52 58000 85000
Type I2ta
230 V AC 400 V AC
A2s A2s
3NA6 803-4 180 265
3NA6 805-4 580 750
3NA6 807-4 1000 1370
3NA6 810-4 1800 2340
3NA6 812-4 3400 4550
3NA6 814-4 4900 6750
3NA6 817-4 6100 8700
3NA6 820-4 9100 11600
3NA6 822-4 12400 17900
3NA6 824-4, 3NA6 824-4KK 27000 38000
3NA6 830-4, 3NA6 830-4KK 48300 69200
3NA6 832-4 70000 91300
3NA6 836-4 120000 158000
LV10-1_THB_05_EN.book Seite 70 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
71 Siemens · 2012
Series 3ND1 8
Size: 000, 00
Operational class: aM
Rated voltage: 500 V AC
Rated current: 6 ... 160 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Type In Pv Δϑ I2ts
1 ms 4 ms
A W K A2s A2s
3ND1 801 6 0.8 7 32 55
3ND1 803 10 0.5 5 150 260
3ND1 805 16 0.8 7 570 800
3ND1 807 20 1 8 830 1200
3ND1 810 25 1.2 9 1400 2000
3ND1 812 32 1.5 10 2300 3300
3ND1 814 35 1.8 11 2600 3800
3ND1 817 40 2 12 3700 5500
3ND1 820 50 2.4 14 5800 8400
3ND1 822 63 3.3 17 9300 13000
3ND1 824 80 4.5 20 15000 21000
3ND1 830 100 4.9 18 26000 37000
3ND1 832 125 6.3 22 41000 60000
3ND1 836 160 9.3 31 64000 92000
Type I2ta
230 V AC 400 V AC 500 V AC
A2s A2s A2s
3ND1 801 60 75 110
3ND1 803 280 320 430
3ND1 805 1000 1300 1600
3ND1 807 1300 1600 2200
3ND1 810 2200 2800 3300
3ND1 812 3800 4500 5400
3ND1 814 4200 5100 6300
3ND1 817 5700 7200 9300
3ND1 820 5200 10500 12500
3ND1 822 15000 16500 21000
3ND1 824 21500 27000 34000
3ND1 830 44000 56000 76000
3ND1 832 76000 98000 135000
3ND1 836 105000 130000 170000
LV10-1_THB_05_EN.book Seite 71 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
72 Siemens · 2012
Series 3ND1 3.., 3ND2
Size: 1, 2, 3
Operational class: aM
Rated voltage: 690 V AC
Rated current: 63 ... 630 A
Time/current characteristics diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
Melting I2t values diagram
Table see page 73.
LV10-1_THB_05_EN.book Seite 72 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Fuse Systems
LV HRC Fuse Systems
LV HRC bases and accessories,
3NH3, 3NG1, 3NX
73 Siemens · 2012
Series 3ND1 3.., 3ND2
Size: 1, 2, 3
Operational class: aM
Rated voltage: 690 V AC
Rated current: 63 ... 630 A
■ More information
Load capability with increased ambient temperature
The time/current characteristic of the NEOZED/DIAZED/LV HRC
fuse links is based on an ambient temperature of 20 °C ±5 °C in
accordance with DIN VDE 0636. When used in higher ambient
temperatures (see diagram) a reduced load-carrying capacity
must be planned for. At an ambient temperature of 50 °C, for
example, an LV HRC fuse link should be dimensioned for only
90 % of the rated current. While the short-circuit behavior is not
influenced by an increased ambient temperature, it is influenced
by overload and operation at rated value.
Influence of the ambient temperature on the load capability of NEOZED,
DIAZED and NH fuse systems of gG operational class with natural
convection in the distribution board.
Assignment of cable and line protection
When gG fuses are assigned for cable and line protection
against overloading, the following conditions must be met in
order to comply with DIN VDE 0100 Part 430:
(1) IB = In = Iz (rated current rule)
(2) I2 = 1.45 x Iz (tripping rule)
IB: Operational current of electrical circuit
In: Rated current of selected protective device
Iz: Permissible current carrying capacity of the cable or line
under specified operating conditions
I2: Tripping current of the protective device under specified
operating conditions ("conventional test current").
These days, the factor 1.45 has become an internationally
accepted compromise of the protection and utilization ratio of a
line, taking into account the breaking behavior of the protective
device (e.g. fuse).
In compliance with the supplementary requirements for
DIN VDE 0636, Siemens fuse links of gG operational class
comply with the following conditions:
"Load breaking switching with I2=1.45 × In during conventional
test duration under special test conditions in accordance with
the aforementioned supplementary requirements of
DIN VDE 0636".
This therefore permits direct assignment.
Type In Pv Δϑ I2ts I2ta
1 ms 4 ms 230 V AC 400 V AC 690 V AC
A W K A2s A2s A2s A2s A2s
3ND2 122 63 4 12.2 14000 17700 19300 25600 42000
3ND2 124 80 4.9 13 24200 30800 36500 48000 80000
3ND2 130 100 5.8 15 45600 59000 65000 85000 140000
3ND2 132 125 8.1 16.5 57000 74300 73000 97000 160000
3ND2 136 160 11.4 18 90000 114000 107000 142000 235000
3ND2 140 200 14.1 19.5 150000 198000 172000 228000 375000
3ND2 144 250 18 22 250000 313000 260000 340000 565000
3ND2 232 125 8.1 16.5 57000 74300 73000 97000 160000
3ND2 236 160 11.4 18 90000 114000 107000 142000 235000
3ND2 240 200 14.1 19.5 150000 198000 172000 228000 375000
3ND2 244 250 18 22 250000 313000 260000 340000 565000
3ND2 252 315 22.6 30 370000 450000 460000 610000 1000000
3ND2 254 355 24.7 29 540000 643000 645000 855000 1400000
3ND2 260 400 30.8 35 615000 750000 688000 910000 1500000
3ND2 352 315 22.6 30 370000 450000 460000 610000 1000000
3ND2 354 355 24.7 29 540000 643000 645000 855000 1400000
3ND2 360 400 30.8 26 615000 750000 688000 910000 1500000
3ND1 365 500 47 40 730000 933000 876000 1095000 1825000
3ND1 372 630 50 43 920000 1375000 1300000 1800000 2600000
20
40
100
120
0
60
80
90
50 20 40 60 80 100 120 0
I2_06648c
Ambient temperature [°C]
LV10-1_THB_05_EN.book Seite 73 Donnerstag, 12. April 2012 12:26 12
© Siemens AG 2012
Current carrying capacity [%]
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
74 Siemens · 2012
■ Overview
SITOR fuses protect power semiconductors from the effects of
short circuits because the super quick disconnect characteristic
is far quicker than with conventional LV HRC fuses. They protect
expensive devices and system components, such as converters
with fuses in the input and the DC link, UPS systems and soft
starters for motors.
Panel mounting requirements have given rise to various connection versions and designs.
The fuses with blade contacts comply with IEC 60269-2 and are
suitable for installation in LV HRC fuse bases, in LV HRC fuse
switch disconnectors and switch disconnectors with fuses. They
also include fuses with slotted blade contacts for screw fixing
with 110 mm mounting dimension, whose sizes are according to
IEC 60269-4.
Fuses with slotted blade contacts for screw fixing with 80 mm or
110 mm mounting dimension are often screwed directly onto
busbars for optimum heat dissipation. Even better heat transmission is provided by the compact fuses with M10 or M12 female
thread, which are also mounted directly onto busbars.
Bolt-on links with 80 mm mounting dimension are another panelmounting version for direct busbar mounting.
The fuses for SITOR thyristor sets, railway rectifiers or electrolysis systems were developed specially for these applications.
The LV HRC bases useable for SITOR fuses and safety switching
devices are on page 47 et.seq.
The fuse characteristic curves and configuration information and
the assignment of SITOR fuses to the 3NP and 3KL fuse bases
and safety switching devices can be found on the Internet
http://support.automation.siemens.com/WW/view/en/14474639/
134300 or
www.siemens.com/lowvoltage/manuals
The new size 3 type ranges have a round ceramic body instead
of a square one. These series are characterized by small I²t
values with low power dissipation and high capability under
alternating load. The dimensions and functional dimensions
correspond to the current standards IEC 60269-4/ EN 60269-4
(VDE 0636-4).
Note:
The ordering data of the fuses are listed in ascending order of
the rated voltage in the selection tables.
© Siemens AG 2012
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
75 Siemens · 2012
Characteristics
SITOR fuse links protect converter equipment against short
circuits.
The power semiconductors used in these devices (diodes,
thyristors, GTOs and others) require high-speed elements for
protection due to their low thermal capacity. SITOR fuse links
(super quick fuse links for semiconductor protection) are ideal
for this type of application.
The following types of short-circuit faults can occur:
• Internal short circuit:
A faulty semiconductor device causes a short circuit within the
power converter.
• External short circuit:
A fault in the load causes a short circuit on the output side of
the power converter.
• Inverter shoot-throughs:
In the event of a failure of the chassis converter control system
during inverter operation (commutation failure), the converter
connection forms a short-circuit type connection between the
DC and AC power supply system.
Fuse links can be arranged in a number of ways within the converter connection. A distinction is made between phase fuses in
three-phase current incoming feeders and, if applicable, DC
fuses and arm fuses in the arms of the converter connections
(see adjacent graphs). In the case of center tap connections,
fuse links can only be arranged as phase fuses in three-phase
current incoming feeders.
When using SITOR fuse links of operational class aR, the overload protection of converter equipment, up to approx.3.5 times
the rated current of the fuse link, is taken from conventional protective devices (for example, thermal-delayed overload relays)
or, in the case of controlled power converters, from the current
limiter (exception: full range fuses).
As semiconductor protection, SITOR fuse links of the 3NE1 ...-0
series with gS operational class are also suitable for the overload
and short-circuit protection of cables, lines and busbars. All
other dual-function fuses of the SITOR series have a gR characteristic. Overload protection is ensured as long as the rated current of the SITOR fuse links of the series 3NE1 ...-0 is selected as
In ≤ Iz (DIN VDE 0100 Part 430).
The rules of DIN VDE 0100 Part 430 must be applied when rating
short-circuit protection for cables, lines and busbars.
Configuration options
Three-phase bidirectional connection W3
with phase fuses with arm fuses
( ) ( )
Six-pulse bridge circuit B6 with
phase fuses
Six-pulse bridge circuit B6 with
phase fuses and DC fuse
(reversible connection)
Six-pulse bridge circuit B6 with
phase fuses and DC fuse
(switching for converter)
Six-pulse bridge circuit B6 with
arm fuses
( ) ( )
Six-pulse bridge circuit B6 with arm fuses
(reversible connection)
© Siemens AG 2012
I2_10898
I2_10893
I2_10894
I2_10895
I2_10896
I2_10897
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
76 Siemens · 2012
Use in switch disconnectors
When using SITOR semiconductor fuses in 3KL and 3KM switch
disconnectors with fuses and 3NP fuse switch disconnectors,
the rated current of the fuse must sometimes be reduced due to
the higher power loss compared to LV HRC fuses for line protection. Sometimes when using SITOR semiconductor fuses in
switch disconnectors, the currents designated can be higher
than the rated currents of the switches. These higher currents
only apply when using SITOR switch disconnectors with semiconductor fuses and cannot be used when using switch disconnectors with standard LV HRC fuses. You will find further details
in the following selection table.
When using SITOR semiconductor fuses of the 3NC2 4, 3NC8 4,
3NE3 3 and 3NE4 3 series, the standard switching capacity of
the fuse must not be used as the blades of these fuses (in contrast to LV HRC fuses) are slotted. Occasional switching of currents up to the rated current of the fuses is permissible.
Due to the mechanical strain on the comparatively long fuse
blade, SITOR semiconductor fuses of the 3NE4 1 series may
only be occasionally switched, and only without load. If only
switching without load is permissible, this must be clearly stated
on the switch itself.
The use of SITOR semiconductor fuses > 63 A for overload
protection is not permitted – even if gR fuses are used
(exception: 3NE1).
The operational voltage is limited by the rated voltage of the
switch disconnector or the fuse. If switching without load, the
limit value is the rated insulation voltage of the switch disconnector.
The 3NE1 "double protection fuses" can be used as full range
fuses (gS) for semiconductor and line protection.
For further information on the assignment of SITOR fuses to the
fuse bases and safety switching devices, please refer to the
tables on pages 80 ff.
■Technical specifications
MLFB Operational
class
(IEC 60269)
Rated
voltage Un
Rated
voltage Un
Rated
current In
Melting I2t
value I2ts
(tvs = 1 ms)
Breaking I2t
value
I2ta at Un
Temperature
rise at In
body center
Power
dissipation
at In
Varying load
factor WL
V AC V DC
1)
A A2s A2s
2)
K
2)
W
3NC2 423-0C gR 500 -- 1503) 7000 33000 26 35 0.85
3NC2 423-3C gR 500 -- 1503) 7000 33000 26 35 0.85
3NC2 425-0C gR 500 -- 2003) 13600 64000 25 40 0.85
3NC2 425-3C gR 500 -- 2003) 13600 64000 25 40 0.85
3NC2 427-0C gR 500 -- 2503) 21000 99000 30 50 0.85
3NC2 427-3C gR 500 -- 2503) 21000 99000 30 50 0.85
3NC2 428-0C gR 500 -- 3003) 28000 132000 40 65 0.85
3NC2 428-3C gR 500 -- 3003) 28000 132000 40 65 0.85
3NC2 431-0C gR 500 -- 3503) 53000 249000 35 60 0.85
3NC2 431-3C gR 500 -- 3503) 53000 249000 35 60 0.85
3NC2 432-0C aR 500 -- 4003) 83000 390000 30 50 0.85
3NC2 432-3C aR 500 -- 4003) 83000 390000 30 50 0.85
3NC3 236-1 aR 690 -- 630 32500 244000 120 120 0.85
3NC3 236-6 aR 690 -- 630 32500 244000 125 125 0.9
3NC3 237-1 aR 690 -- 710 46100 346000 125 130 0.85
3NC3 237-6 aR 690 -- 710 46100 346000 125 130 0.9
3NC3 238-1 aR 690 -- 800 66400 498000 125 135 0.9
3NC3 238-6 aR 690 -- 800 66400 498000 120 135 0.95
3NC3 240-1 aR 690 -- 900 90300 677000 130 145 0.9
3NC3 240-6 aR 690 -- 900 90300 677000 125 140 0.95
3NC3 241-1 aR 690 -- 1000 130000 975000 125 155 0.95
3NC3 241-6 aR 690 -- 1000 130000 975000 120 145 1
3NC3 242-1 aR 690 -- 1100 184000 1382000 125 165 0.95
3NC3 242-6 aR 690 -- 1100 184000 1382000 115 150 1
3NC3 243-1 aR 690 -- 1250 265000 1990000 130 175 0.95
3NC3 243-6 aR 690 -- 1250 265000 1990000 110 155 1
3NC3 244-1 aR 500 -- 1400 382000 2100000 140 200 0.95
3NC3 244-6 aR 500 -- 1400 382000 2100000 115 175 1
3NC3 245-1 aR 500 -- 1600 520000 2860000 160 240 0.9
3NC3 245-6 aR 500 -- 1600 520000 2860000 120 195 0.95
3NC3 336-1 aR 1000 -- 630 66400 418000 160 145 0.85
3NC3 336-6 aR 1000 -- 630 66400 418000 140 130 0.9
3NC3 337-1 aR 1000 -- 710 90300 569000 160 150 0.85
3NC3 337-6 aR 1000 -- 710 90300 569000 140 140 0.9
3NC3 338-1 aR 1000 -- 800 130000 819000 150 155 0.85
3NC3 338-6 aR 1000 -- 800 130000 819000 130 150 0.9
3NC3 340-1 aR 1000 -- 900 184000 1160000 145 165 0.9
3NC3 340-6 aR 1000 -- 900 184000 1160000 130 160 0.95
3NC3 341-1 aR 1000 -- 1000 265000 1670000 140 170 0.9
3NC3 341-6 aR 1000 -- 1000 265000 1670000 125 165 0.95
3NC3 342-1 aR 800 -- 1100 382000 1910000 150 185 0.9
3NC3 342-6 aR 800 -- 1100 382000 1910000 130 175 0.95
3NC3 343-1 aR 800 -- 1250 520000 2600000 165 210 0.9
3NC3 343-6 aR 800 -- 1250 520000 2600000 135 185 0.95
© Siemens AG 2012
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
77 Siemens · 2012
3NC3 430-1 aR 1250 -- 315 10600 72500 60 80 0.95
3NC3 430-6 aR 1250 -- 315 10600 72500 60 80 0.95
3NC3 432-1 aR 1250 -- 400 23900 163000 95 95 0.95
3NC3 432-6 aR 1250 -- 400 23900 163000 95 95 0.95
3NC3 434-1 aR 1250 -- 500 42500 290000 115 115 0.9
3NC3 434-6 aR 1250 -- 500 42500 290000 115 115 0.9
3NC3 436-1 aR 1250 -- 630 96600 650000 120 120 0.95
3NC3 436-6 aR 1250 -- 630 96600 650000 120 120 0.95
3NC3 438-1 aR 1100 -- 800 170000 985000 145 145 0.9
3NC3 438-6 aR 1100 -- 800 170000 985000 145 145 0.9
3NC5 5314) aR 800 -- 3505) 66000 260000 200 80 0.9
3NC5 8384) aR 1000 -- 8005) 360000 1728000 130 170 0.9
3NC5 8404) aR 1000 -- 6005) 185000 888000 110 150 0.9
3NC5 8414) aR 800 -- 6305) 185000 888000 110 145 0.9
3NC7 327-2 aR 680 -- 250 244000 635000 45 25 0.9
3NC7 331-2 aR 680 -- 350 550000 1430000 66 32 0.9
3NC8 423-0C gR 690 -- 1503) 1100 17600 33 40 0.85
3NC8 423-3C gR 690 -- 1503) 1100 17600 33 40 0.85
3NC8 425-0C gR 690 -- 2003) 2400 38400 46 55 0.85
3NC8 425-3C gR 690 -- 2003) 2400 38400 46 55 0.85
3NC8 427-0C gR 690 -- 2503) 4400 70400 95 72 0.85
3NC8 427-3C gR 690 -- 2503) 4400 70400 95 72 0.85
3NC8 431-0C gR 690 -- 3503) 11000 176000 65 95 0.85
3NC8 431-3C gR 690 -- 3503) 11000 176000 65 95 0.85
3NC8 434-0C gR 690 -- 5003) 28000 448000 75 130 0.85
3NC8 434-3C gR 690 -- 5003) 28000 448000 75 130 0.85
3NC8 444-3C aR 600 -- 1000 400000 2480000 110 140 0.9
3NE1 020-2 gR 690 -- 80 780 5800 45 10.5 1
3NE1 021-0 gS 690 -- 100 3100 33000 36 10 1
3NE1 021-2 gR 690 -- 100 1490 11000 49 11.5 1
3NE1 022-0 gS 690 -- 125 6000 63000 40 11 1
3NE1 022-2 gR 690 -- 125 3115 23000 55 13.5 1
3NE1 224-0 gS 690 -- 160 7400 60000 60 24 1
3NE1 224-2 gR 690 -- 160 2650 18600 70 30 1
3NE1 224-3 gR 690 -- 160 2650 18600 70 30 1
3NE1 225-0 gS 690 -- 200 14500 100000 65 27 1
3NE1 225-2 gR 690 -- 200 5645 51800 62 28 1
3NE1 225-3 gR 690 -- 200 5645 51800 62 28 1
3NE1 227-0 gS 690 -- 250 29500 200000 75 30 1
3NE1 227-2 gR 690 -- 250 11520 80900 70 35 1
3NE1 227-3 gR 690 -- 250 11520 80900 70 35 1
3NE1 230-0 gS 690 -- 315 46100 310000 80 38 1
3NE1 230-2 gR 690 -- 315 22580 168000 75 42 1
3NE1 230-3 gR 690 -- 315 22580 168000 75 42 1
3NE1 331-0 gS 690 -- 350 58000 430000 75 42 1
3NE1 331-2 gR 690 -- 350 29500 177000 82 44 1
3NE1 331-3 gR 690 -- 350 29500 177000 82 44 1
3NE1 332-0 gS 690 -- 400 84000 590000 85 45 1
3NE1 332-2 gR 690 -- 400 37300 177000 100 54 1
3NE1 332-3 gR 690 -- 400 37300 177000 100 54 1
3NE1 333-0 gS 690 -- 450 104000 750000 85 53 1
3NE1 333-2 gR 690 -- 450 46100 276500 100 62 1
3NE1 333-3 gR 690 -- 450 46100 276500 100 62 1
3NE1 334-0 gS 690 -- 500 149000 950000 90 56 1
3NE1 334-2 gR 690 -- 500 66400 398000 100 65 1
3NE1 334-3 gR 690 -- 500 66400 398000 100 65 1
3NE1 435-0 gS 690 -- 560 215000 1700000 65 50 1
3NE1 435-2 gR 690 -- 560 130000 890000 80 60 1
3NE1 436-3 gR 690 -- 560 130000 890000 80 60 1
3NE1 436-0 gS 690 -- 630 293000 2350000 70 55 1
3NE1 436-2 gR 690 -- 630 203000 1390000 82 62 1
3NE1 436-3 gR 690 -- 630 203000 1390000 82 62 1
3NE1 437-0 gS 690 -- 710 437000 3400000 68 60 1
3NE1 437-1 gR 600 -- 710 321000 2460000 85 65 1
3NE1 437-2 gR 690 -- 710 265000 1818000 90 72 1
3NE1 437-3 gR 690 -- 710 265000 1818000 90 72 1
MLFB Operational
class
(IEC 60269)
Rated
voltage Un
Rated
voltage Un
Rated
current In
Melting I2t
value I2ts
(tvs = 1 ms)
Breaking I2t
value
I2ta at Un
Temperature
rise at In
body center
Power
dissipation
at In
Varying load
factor WL
V AC V DC
1)
A A2s A2s
2)
K
2)
W
© Siemens AG 2012
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
78 Siemens · 2012
3NE1 438-0 gS 690 -- 800 723000 5000000 70 59 1
3NE1 438-1 gR 600 -- 800 437000 3350000 95 72 1
3NE1 438-2 gR 690 -- 800 361000 2475000 95 82 1
3NE1 438-3 gR 690 -- 800 361000 2475000 95 82 1
3NE1 447-2 gR 690 -- 670 240000 1640000 90 65 1
3NE1 447-3 gR 690 -- 670 240000 1640000 90 65 1
3NE1 448-2 gR 690 -- 850 520000 3640000 95 76 1
3NE1 448-3 gR 690 -- 850 520000 3640000 95 76 1
3NE1 802-0 gS 690 -- 40 295 3000 30 5 1
3NE1 803-0 gS 690 -- 35 166 1700 35 5 1
3NE1 813-0 gS 690 -- 16 18 200 25 3 1
3NE1 814-0 gS 690 - 20 41 430 25 3.5 1
3NE1 815-0 gS 690 -- 25 74 780 30 4 1
3NE1 817-0 gS 690 -- 50 461 4400 35 6 1
3NE1 818-0 gS 690 -- 63 903 9000 40 7 1
3NE1 820-0 gS 690 -- 80 1843 18000 40 8 1
3NE3 221 aR 1000 -- 100 665 4800 65 28 0.95
3NE3 222 aR 1000 -- 125 1040 7200 70 36 0.95
3NE3 224 aR 1000 -- 160 1850 13000 90 42 1
3NE3 225 aR 1000 -- 200 4150 30000 80 42 1
3NE3 227 aR 1000 -- 250 6650 48000 90 50 1
3NE3 230-0B aR 1000 -- 315 13400 80000 100 65 0.95
3NE3 231 aR 1000 -- 350 16600 100000 120 75 0.9
3NE3 232-0B aR 1000 -- 400 22600 135000 140 85 0.9
3NE3 233 aR 1000 -- 450 29500 175000 130 95 0.9
3NE3 332-0B aR 1000 -- 400 22600 135000 120 85 1
3NE3 333 aR 1000 -- 450 29500 175000 125 90 1
3NE3 334-0B aR 1000 -- 500 46100 260000 115 90 1
3NE3 335 aR 1000 -- 560 66500 360000 120 95 1
3NE3 336 aR 1000 --- 630 104000 600000 110 100 1
3NE3 337-8 aR 900 -- 710 149000 800000 125 110 1
3NE3 338-8 aR 800 -- 800 184000 850000 140 130 0.95
3NE3 340-8 aR 690 -- 900 223000 920000 160 165 0.95
3NE3 421-0C aR 1000 -- 100 1800 13500 45 25 1
3NE3 430-0C aR 1000 -- 315 29000 218000 120 80 1
3NE3 432-0C aR 1000 -- 400 48500 364000 130 110 1
3NE3 434-0C aR 1000 -- 500 116000 870000 120 95 1
3NE3 525-56) aR 1000 -- 2007) 7150 44000 75 50 0.85
3NE3 535-56) aR 1000 -- 4507) 64500 395000 130 90 0.85
3NE3 626-0C aR 1000 -- 224 7200 54000 140 85 1
3NE3 635-0C aR 1000 -- 450 65000 488000 150 110 1
3NE3 635-6 aR 1000 -- 450 65000 488000 150 110 1
3NE3 636-0C aR 1000 -- 630 170000 1280000 136 132 1
3NE3 637-0C aR 1000 -- 710 260000 1950000 170 145 1
3NE3 637-1C8) aR 1000 -- 710 260000 1950000 170 145 1
3NE4 101 gR 1000 -- 32 40 280 45 12 0.9
3NE4 102 gR 1000 -- 40 75 500 50 13 0.9
3NE4 117 gR 1000 -- 50 120 800 65 16 0.9
3NE4 117-5 gR 1000 -- 50 135 1100 95 20 0.85
3NE4 118 aR 1000 -- 63 230 1500 78 20 0.9
3NE4 120 aR 1000 -- 80 450 3000 82 22 0.9
3NE4 121 aR 1000 -- 100 900 6000 85 24 0.9
3NE4 121-5 aR 1000 -- 100 900 7400 135 35 0.85
3NE4 122 aR 1000 -- 125 1800 14000 100 30 0.9
3NE4 124 aR 1000 -- 160 3600 29000 120 35 0.9
3NE4 146-5 aR 800 -- 170 7370 60500 142 43 0.85
3NE4 327-0B aR 800 -- 250 3600 29700 175 105 0.85
3NE4 327-6B6) aR 800 -- 250 3600 29700 175 105 0.85
3NE4 330-0B aR 800 -- 315 7400 60700 170 120 0.85
3NE4 330-6B6) aR 800 -- 315 7400 60700 170 120 0.85
3NE4 333-0B aR 800 -- 450 29400 191000 190 140 0.85
3NE4 333-6B6) aR 800 -- 450 29400 191000 190 140 0.85
3NE4 334-0B aR 800 -- 500 42500 276000 195 155 0.85
3NE4 334-6B6) aR 800 -- 500 42500 276000 195 155 0.85
3NE4 337 aR 800 -- 710 142000 923000 170 155 0.95
3NE4 337-66) aR 800 -- 710 142000 923000 170 155 0.95
MLFB Operational
class
(IEC 60269)
Rated
voltage Un
Rated
voltage Un
Rated
current In
Melting I2t
value I2ts
(tvs = 1 ms)
Breaking I2t
value
I2ta at Un
Temperature
rise at In
body center
Power
dissipation
at In
Varying load
factor WL
V AC V DC
1)
A A2s A2s
2)
K
2)
W
© Siemens AG 2012
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
79 Siemens · 2012
3NE5 424-0C aR 1500 -- 160 7200 54000 75 56 1
3NE5 426-0C aR 1500 -- 224 18400 138000 100 80 1
3NE5 430-0C aR 1500 -- 315 41500 311000 125 115 1
3NE5 431-0C aR 1500 -- 350 57000 428000 150 135 1
3NE5 433-0C aR 1500 -- 450 116000 870000 150 145 0.95
3NE5 433-1C aR 1500 -- 450 116000 870000 150 145 0.95
3NE5 627-0C aR 1500 -- 250 11200 84000 170 130 1
3NE5 633-0C aR 1500 -- 450 78500 590000 170 160 1
3NE5 643-0C aR 1500 -- 600 260000 1950000 160 145 1
3NE6 437 aR 900 -- 7109) 100000 620000 80 150 0.9
3NE6 437-7 aR 900 -- 71010) 100000 620000 110 150 0.9
3NE6 444 aR 900 -- 9009) 400000 1920000 80 170 0.9
3NE7 425-0C aR 2000 -- 200 18400 138000 85 75 1
3NE7 427-0C aR 2000 -- 250 29000 218000 110 110 1
3NE7 431-0C aR 2000 -- 350 74000 555000 105 120 1
3NE7 432-0C aR 2000 -- 400 116000 870000 130 150 1
3NE7 633-0C aR 2000 -- 450 128000 960000 165 160 1
3NE7 633-1C11) aR 2000 -- 450 128000 960000 165 160 1
3NE7 636-0C aR 2000 -- 630 260000 1950000 200 220 1
3NE7 636-1C11) aR 2000 -- 630 260000 1950000 200 220 1
3NE7 637-1C11) aR 2000 -- 710 415000 3110000 230 275 1
3NE7 648-1C11) aR 2000 -- 525 149000 1120000 210 210 1
3NE8 003-1 gR 690 -- 35 70 400 45 9 0.95
3NE8 015-1 gR 690 -- 25 30 180 35 7 0.95
3NE8 017-1 gR 690 -- 50 120 700 65 14 0.95
3NE8 018-1 gR 690 -- 63 260 1400 70 16 0.95
3NE8 020-1 aR 690 -- 80 450 2400 80 19 0.95
3NE8 021-1 aR 690 -- 100 850 4200 90 22 0.95
3NE8 022-1 aR 690 -- 125 1400 6500 110 28 0.95
3NE8 024-1 aR 690 -- 160 2800 13000 130 38 0.95
3NE8 701-1 gR 690 70012) 32 40 285 45 10 0.9
3NE8 702-1 gR 690 70012) 40 69 490 55 12 0.9
3NE8 714-1 gR 690 70012) 20 12 83 40 7 0.9
3NE8 715-1 gR 690 70012) 25 19 140 40 9 0.9
3NE8 717-1 gR 690 70012) 50 115 815 60 15 0.9
3NE8 718-1 aR 690 70012) 63 215 1550 70 16 0.95
3NE8 720-1 aR 690 70012) 80 380 2700 80 18 0.9
3NE8 721-1 aR 690 70012) 100 695 4950 75 19 0.95
3NE8 722-1 aR 690 70012) 125 1250 9100 80 23 0.95
3NE8 724-1 aR 690 70012) 160 2350 17000 100 31 0.9
3NE8 725-1 aR 690 70012) 200 4200 30000 120 36 0.9
3NE8 727-1 aR 690 70012) 250 7750 55000 125 42 0.9
3NE8 731-1 aR 690 70012) 315 12000 85500 150 54 0.85
3NE9 440-6 gR 600 -- 850 400000 2480000 74 85 1
3NE9 450 aR 600 -- 12509) 400000 2480000 80 210 0.9
3NE9 450-7 aR 600 -- 125010) 400000 2480000 105 210 0.9
3NE9 632-1C aR 2500 -- 400 81000 620000 160 205 1
3NE9 634-1C aR 2500 -- 500 170000 1270000 180 235 1
3NE9 636-1C aR 2500 -- 630 385000 2800000 198 275 1
1) Maximum tightening torque: M10 capped thread: 35 Nm, screw penetration depth ≥ 9 mm.
2) Temperature rise and power dissipation for operation in LV HRC fuse base.
3) Cooling air speed 1 m/s. In the case of natural air cooling, reduction of 5 %.
4) Maximum tightening torque:
- M10 thread (with indicator): 40 Nm
- M10 capped thread: 50 Nm, screw penetration depth ≥ 9 mm
- M24 × 1.5 thread: 60 Nm.
5) Temperature of water-cooled busbar max. +45 C.
6) Maximum tightening torque:
M10 capped thread: 35 Nm, screw penetration depth ≥ 9 mm.
7) Cooling air speed ≥ 0.5 m/s. In the case of natural air cooling, reduction of 5 %.
8) Gauge 140 mm, M12 screw connection.
9) Cooling air speed ≥ 2 m/s.
10) Bottom (cooled) connection max. +60 °C, top connection (M10) max. +110 °C.
11) M12 screw connection
12) Rated voltage according to UL.
MLFB Operational
class
(IEC 60269)
Rated
voltage Un
Rated
voltage Un
Rated
current In
Melting I2t
value I2ts
(tvs = 1 ms)
Breaking I2t
value
I2ta at Un
Temperature
rise at In
body center
Power
dissipation
at In
Varying load
factor WL
V AC V DC
1)
A A2s A2s
2)
K
2)
W
© Siemens AG 2012
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
80 Siemens · 2012
Load rating of SITOR fuse links with 3NH LV HRC fuse bases
SITOR fuse links Ømin Cu LV HRC fuse bases
Order No. Un Operational
class
BG In WL Order No. BG Imax IWL
V AC A mm2 A A
3NC2 423-3C 500 gR 3 150 0.95 70 3NH3 420/3NH3 430 3 150 143
3NC2 425-3C 500 gR 3 200 0.95 95 3 190 181
3NC2 427-3C 500 gR 3 250 0.95 120 3 240 228
3NC2 428-3C 500 gR 3 300 0.95 185 3 285 271
3NC2 431-3C 500 gR 3 350 0.95 240 3 330 314
3NC2 432-3C 500 aR 3 400 0.95 240 3 400 380
3NC3 336-1 1000 aR 3 630 0.85 480 3NH3 420/3NH3 430 3 560 476
3NC3 337-1 1000 aR 3 710 0.85 560 3 600 510
3NC3 338-1 1000 aR 3 800 0.85 640 3 640 544
3NC3 340-1 1000 aR 3 900 0.90 720 3 720 648
3NC3 341-1 1000 aR 3 1000 0.90 800 3 800 720
3NC3 342-1 800 aR 3 1100 0.90 880 3 880 792
3NC3 343-1 800 aR 3 1250 0.90 960 3 950 855
3NC8 423-3C 690 gR 3 150 0.85 70 3NH3 420/3NH3 430 3 135 115
3NC8 425-3C 690 gR 3 200 0.85 95 3 180 153
3NC8 427-3C 690 gR 3 250 0.85 120 3 250 213
3NC8 431-3C 690 gR 3 350 0.85 240 3 315 268
3NC8 434-3C 690 gR 3 500 0.85 2 × 150 3 450 383
3NC8 444-3C 600 aR 3 1000 0.95 2 × (60 × 6) 3 800 800
3NE1 020-2 690 gR 00 80 1.0 25 3NH3 030/3NH4 030 00 80 80
3NE1 021-0 690 gS 00 100 1.0 35 00 100 100
3NE1 021-2 690 gR 00 100 1.0 35 00 100 100
3NE1 022-0 690 gS 00 125 1.0 50 00 125 125
3NE1 022-2 690 gR 00 125 1.0 50 00 125 125
3NE1 224-0 690 gS 1 160 1.0 70 3NH3 230/3NH4 230 1 160 160
3NE1 224-2 690 gR 1 160 1.0 70 1 160 160
3NE1 224-3 690 gR 1 160 1.0 70 1 160 160
3NE1 225-0 690 gS 1 200 1.0 95 1 200 200
3NE1 225-2 690 gR 1 200 1.0 95 1 200 200
3NE1 225-3 690 gR 1 200 1.0 95 1 200 200
3NE1 227-0 690 gS 1 250 1.0 120 1 250 250
3NE1 227-2 690 gR 1 250 1.0 120 1 250 250
3NE1 227-3 690 gR 1 250 1.0 120 1 250 250
3NE1 230-0 690 gS 1 315 1.0 2 × 70 3NH3 320/3NH3 330 2 315 315
3NE1 230-2 690 gR 1 315 1.0 2 × 70 2 315 315
3NE1 230-3 690 gR 1 315 1.0 2 × 70 2 315 315
3NE1 331-0 690 gS 2 350 1.0 2 × 95 3NH3 320/3NH3 330 2 350 350
3NE1 331-2 690 gR 2 350 1.0 2 × 95 2 350 350
3NE1 331-3 690 gR 2 350 1.0 2 × 95 2 350 350
3NE1 332-0 690 gS 2 400 1.0 2 × 95 2 400 400
3NE1 332-2 690 gR 2 400 1.0 2 × 95 2 400 400
3NE1 332-3 690 gR 2 400 1.0 2 × 95 2 400 400
3NE1 333-0 690 gS 2 450 1.0 2 × 120 3NH3 420/3NH3 430 3 450 450
3NE1 333-2 690 gR 2 450 1.0 2 × 120 3 450 450
3NE1 333-3 690 gR 2 450 1.0 2 × 120 3 450 450
3NE1 334-0 690 gS 2 500 1.0 2 × 120 3 500 500
3NE1 334-2 690 gR 2 500 1.0 2 × 120 3 500 500
3NE1 334-3 690 gR 2 500 1.0 2 × 120 3 500 500
3NE1 435-0 690 gS 3 560 1.0 2 × 150 3NH3 420/3NH3 430 3 560 560
3NE1 435-2 690 gR 3 560 1.0 2 × 150 3 560 560
3NE1 435-3 690 gR 3 560 1.0 2 × 150 3 560 560
3NE1 436-0 690 gS 3 630 1.0 2 × 185 3 630 630
3NE1 436-2 690 gR 3 630 1.0 2 × 185 3 630 630
3NE1 436-3 690 gR 3 630 1.0 2 × 185 3 630 630
3NE1 437-0 690 gS 3 710 1.0 2 × (40 × 5) 3 710 710
3NE1 437-1 600 gR 3 710 1.0 2 × (40 × 5) 3 690 690
3NE1 437-2 690 gR 3 710 1.0 2 × (40 × 5) 3 710 710
3NE1 437-3 690 gR 3 710 1.0 2 × (40 × 5) 3 710 710
3NE1 438-0 690 gS 3 800 1.0 2 × (50 × 5) 3 800 800
3NE1 438-1 600 gR 3 800 1.0 2 × (50 × 5) 3 750 750
3NE1 438-2 690 gR 3 800 1.0 2 × (50 × 5) 3 800 800
3NE1 438-3 690 gR 3 800 1.0 2 × (50 × 5) 3 800 800
3NE1 447-2 690 gR 3 670 1.0 2 × (40 × 5) 3 670 670
3NE1 447-3 690 gR 3 670 1.0 2 × (40 × 5) 3 670 670
3NE1 448-2 690 gR 3 850 1.0 2 × (40 × 8) 3 850 850
3NE1 448-3 690 gR 3 850 1.0 2 × (40 × 8) 3 850 850
© Siemens AG 2012
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
81 Siemens · 2012
Un = Rated voltage
BG = Size
In = Rated current
WL = Varying load factor
Ømin Cu = Required conductor cross-section Cu
Imax = Maximum permissible current
IWL = Maximum permissible current with varying load
3NE1 813-0 690 gS 000 16 1.0 1.5 3NH3 030/3NH4 030 00 16 16
3NE1 814-0 690 gS 000 20 1.0 2.5 00 20 20
3NE1 815-0 690 gS 000 25 1.0 4 00 25 25
3NE1 803-0 690 gS 000 35 1.0 6 00 35 35
3NE1 802-0 690 gS 000 40 1.0 10 00 40 40
3NE1 817-0 690 gS 000 50 1.0 10 00 50 50
3NE1 818-0 690 gS 000 63 1.0 16 00 63 63
3NE1 820-0 690 gS 000 80 1.0 25 00 80 80
3NE3 221 1000 aR 1 100 0.95 35 3NH3 230/3NH4 230 1 100 95
3NE3 222 1000 aR 1 125 0.95 50 1 125 119
3NE3 224 1000 aR 1 160 1.0 70 1 160 160
3NE3 225 1000 aR 1 200 1.0 95 1 200 200
3NE3 227 1000 aR 1 250 1.0 120 1 250 250
3NE3 230-0B 1000 aR 1 315 0.95 185 3NH3 320/3NH3 330 2 305 290
3NE3 231 1000 aR 1 350 0.95 240 2 335 318
3NE3 232-0B 1000 aR 1 400 0.90 240 2 380 342
3NE3 233 1000 aR 1 450 0.90 2 × 150 2 425 383
3NE3 332-0B 1000 aR 2 400 1.0 240 3NH3 420/3NH3 430 3 400 400
3NE3 333 1000 aR 2 450 1.0 2 × 150 3 450 450
3NE3 334-0B 1000 aR 2 500 1.0 2 × 150 3 500 500
3NE3 335 1000 aR 2 560 1.0 2 × 185 3 560 560
3NE3 336 1000 aR 2 630 1.0 2 × 185 3 630 630
3NE3 337-8 900 aR 2 710 1.0 2 × 200 3 680 680
3NE3 338-8 800 aR 2 800 0.95 2 × 200 3 700 665
3NE3 340-8 690 aR 2 900 0.95 2 × 240 3 750 713
3NE4 101 1000 gR 0 32 0.9 6 3NH3 120/3NH4 230 0/1 32 29
3NE4 102 1000 gR 0 40 0.9 10 0/1 40 36
3NE4 117 1000 gR 0 50 0.9 10 0/1 50 45
3NE4 118 1000 aR 0 63 0.9 16 0/1 63 57
3NE4 120 1000 aR 0 80 0.9 25 0/1 80 72
3NE4 121 1000 aR 0 100 0.9 35 0/1 100 93
3NE4 122 1000 aR 0 125 0.9 50 0/1 125 113
3NE4 124 1000 aR 0 160 0.9 70 0/1 160 144
3NE4 327-0B 800 aR 2 250 0.85 120 3NH3 320/3NH3 330 2 240 204
3NE4 330-0B 800 aR 2 315 0.85 240 2 300 255
3NE4 333-0B 800 aR 2 450 0.85 2 × (30 × 5) 3NH3 420/3NH3 430 3 425 361
3NE4 334-0B 800 aR 2 500 0.85 2 × (30 × 5) 3 475 404
3NE4 337 800 aR 2 710 0.95 2 × (40 × 5) 3 630 599
3NE8 015-1 690 gR 00 25 0.95 4 3NH3 030/3NH4 030 00 25 24
3NE8 003-1 690 gR 00 35 0.95 6 00 35 33
3NE8 017-1 690 gR 00 50 0.90 10 00 50 45
3NE8 018-1 690 gR 00 63 0.95 16 00 63 60
3NE8 020-1 690 aR 00 80 0.95 25 00 80 76
3NE8 021-1 690 aR 00 100 0.95 35 3NH3 030/3NH4 030 00 100 95
3NE8 022-1 690 aR 00 125 0.95 50 00 125 119
3NE8 024-1 690 aR 00 160 0.95 70 00 160 152
SITOR fuse links Ømin Cu LV HRC fuse bases
Order No. Un Operational
class
BG In WL Order No. BG Imax IWL
V AC A mm2 A A
© Siemens AG 2012
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
82 Siemens · 2012
Load rating of SITOR fuse links with 3NP LV HRC fuse switch disconnectors
SITOR fuse links Ø min Cu 3NP LV HRC fuse switch disconnectors
Add-on units Busbar devices
Order No. Un BG In WL Order No. BG Imax IWL Order No. BG Imax IWL Order No. BG Imax IWL Order No. BG Imax IWL
V AC A mm2 A A A A
3NC2 423-3C 500 3 150 0.95 70 3NP54 3 145 125 3NP1 163 3 140 133 On
request 1) -- -- --
3NC2 425-3C 500 3 200 0.95 95 3 180 165 3 175 166 -- -- --
3NC2 427-3C 500 3 250 0.95 120 3 225 205 3 220 209 -- -- --
3NC2 428-3C 500 3 300 0.95 185 3 255 240 3 250 238 -- -- --
3NC2 431-3C 500 3 350 0.95 240 3 330 295 3 320 304 -- -- --
3NC2 432-3C 500 3 400 0.95 240 3 400 380 3 370 352 -- -- --
3NC3 336-1 1000 3 630 0.85 480 3NP54 3 530 451 3NP1 163 3 500 425 -- -- -- --
3NC3 337-1 1000 3 710 0.85 560 3 570 485 -- -- -- -- -- -- --
3NC3 338-1 1000 3 800 0.85 640 3 630 535 -- -- -- -- -- --
3NC3 340-1 1000 3 900 0.90 720 3 700 630 -- -- -- -- -- --
3NC3 341-1 1000 3 1000 0.90 800 3 770 693 -- -- -- -- -- --
3NC3 342-1 800 3 1100 0.90 880 3 800 720 -- -- -- -- -- --
3NC3 343-1 800 3 1250 0.90 960 3 800 765 -- -- -- -- -- --
3NC8 423-3C 660 3 150 0.85 70 3NP54 3 135 125 3NP1 163 3 120 102 On
request 1) -- -- --
3NC8 425-3C 660 3 200 0.85 95 3 180 165 3 160 136 -- -- --
3NC8 427-3C 660 3 250 0.85 120 3 225 205 3 200 170 -- -- --
3NC8 431-3C 660 3 350 0.85 240 3 300 275 3 270 230 -- -- --
3NC8 434-3C 690 3 500 0.85 2 ×150 3 425 400 3 385 327 -- -- --
3NC8 444-3C 600 3 1000 0.95 2× (60x6) 3NP54 3 800 760 -- -- -- -- On
request 1)
-- -- --
3NE1 020-2 690 00 80 1.0 25 3NP50 00 80 80 3NP1 133 00 80 80 On
request 1) -- -- --
3NE1 021-0 690 00 100 1.0 35 00 100 100 00 100 100 -- -- --
3NE1 021-2 690 00 100 1.0 35 00 100 100 00 95 95 -- -- --
3NE1 022-0 690 00 125 1.0 50 00 125 125 00 120 120 -- -- --
3NE1 022-2 690 00 125 1.0 50 00 125 125 00 115 115 -- -- --
3NE1 224-0 690 1 160 1.0 70 3NP52 1 160 160 3NP1 143 1 160 160 3NP1 153 2 160 160 On
request 1) -- -- --
3NE1 224-2 690 1 160 1.0 70 1 160 160 1 150 150 2 160 160 -- -- --
3NE1 224-3 690 1 160 1.0 70 1 160 160 1 150 150 2 160 160 -- -- --
3NE1 225-0 690 1 200 1.0 95 1 200 200 1 190 190 2 200 200 -- -- --
3NE1 225-2 690 1 200 1.0 95 1 200 200 1 180 180 2 190 190 -- -- --
3NE1 225-3 690 1 200 1.0 95 1 200 200 1 180 180 2 190 190 -- -- --
3NE1 227-0 690 1 250 1.0 120 1 250 250 1 235 235 2 250 250 -- -- --
3NE1 227-2 690 1 250 1.0 120 1 250 250 1 220 220 2 235 235 -- -- --
3NE1 227-3 690 1 250 1.0 120 1 250 250 1 220 220 2 235 235 -- -- --
3NE1 230-0 690 1 315 1.0 2× 70 3NP53 2 315 315 3NP1 153 2 290 290 On
request 1) -- -- --
3NE1 230-2 690 1 315 1.0 2× 70 2 315 315 2 278 278 -- -- --
3NE1 230-3 690 1 315 1.0 2× 70 2 315 315 2 278 278 -- -- --
3NE1 331-0 690 2 350 1.0 2× 95 3NP53 2 350 350 3NP1 153 2 315 315 3NP1 163 3 340 340 On
request 1) -- -- --
3NE1 331-2 690 2 350 1.0 2× 95 2 350 350 2 300 300 3 330 330 -- -- --
3NE1 331-3 690 2 350 1.0 2× 95 2 350 350 2 300 300 3 330 330 -- -- --
3NE1 332-0 690 2 400 1.0 2× 95 2 400 400 2 340 340 3 380 380 -- -- --
3NE1 332-2 690 2 400 1.0 2× 95 2 400 400 2 328 328 3 370 370 -- -- --
3NE1 332-3 690 2 400 1.0 2× 95 2 400 400 2 328 328 3 370 370 -- -- --
3NE1 333-0 690 2 450 1.0 2× 120 3NP54 3 450 450 3NP1 163 3 450 450 On
request 1) -- -- --
3NE1 333-2 690 2 450 1.0 2× 120 3 450 450 3 430 430 -- -- --
3NE1 333-3 690 2 450 1.0 2× 120 3 450 450 3 430 430 -- -- --
3NE1 334-0 690 2 500 1.0 2× 120 3 500 500 3 500 500 -- -- --
3NE1 334-2 690 2 500 1.0 2× 120 3 500 500 3 475 475 -- -- --
3NE1 334-3 690 2 500 1.0 2× 120 3 500 500 3 475 475 -- -- --
3NE1 435-0 690 3 560 1.0 2× 150 3NP54 3 560 560 3NP1 163 3 560 560 On
request 1) -- -- --
3NE1 435-2 690 3 560 1.0 2× 150 3 560 560 3 555 555 -- -- --
3NE1 435-3 690 3 560 1.0 2× 150 3 560 560 3 555 555 -- -- --
3NE1 436-0 690 3 630 1.0 2× 185 3 630 630 3 630 630 -- -- --
3NE1 436-2 690 3 630 1.0 2× 185 3 625 625 3 620 620 -- -- --
3NE1 436-3 690 3 630 1.0 2× 185 3 625 625 3 620 620 -- -- --
3NE1 437-0 690 3 710 1.0 2× (40×5) 3 710 710 -- -- -- -- -- -- --
3NE1 437-1 600 3 710 1.0 2× (40×5) 3 690 690 -- -- -- -- -- --
3NE1 437-2 690 3 710 1.0 2× (40×5) 3 685 685 -- -- -- -- -- --
3NE1 437-3 690 3 710 1.0 2× (40×5) 3 685 685 -- -- -- -- -- --
3NE1 438-0 690 3 800 1.0 2× (50×5) 3NP54 3 800 800 -- -- -- -- On
request 1) -- -- --
3NE1 438-1 600 3 800 1.0 2× (50×5) 3 750 750 -- -- -- -- -- --
3NE1 438-2 690 3 800 1.0 2× (50×5) 3 770 770 -- -- -- -- -- --
3NE1 438-3 690 3 800 1.0 2× (50×5) 3 770 770 -- -- -- -- -- --
3NE1 447-2 690 3 670 1.0 2× (40×5) 3 655 655 -- -- -- -- -- --
3NE1 447-3 690 3 670 1.0 2× (40×5) 3 655 655 -- -- -- -- -- --
3NE1 448-2 690 3 850 1.0 2× (40×8) 3 820 820 -- -- -- -- -- --
3NE1 448-3 690 3 850 1.0 2× (40×8) 3 820 820 -- -- -- -- -- --
© Siemens AG 2012
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
83 Siemens · 2012
Un = Rated voltage
BG = Size
In = Rated current
WL = Varying load factor
Ømin Cu = Required conductor cross-section Cu
Imax = Maximum permissible current
IWL = Maximum permissible current with varying load
1) Available soon
3NE1 813-0 690 000 16 1.0 1.5 3NP53 000 16 16 3NP1 123 000 16 16 3NP1 133 00 16 16 On
request 1) -- -- --
3NE1 814-0 690 000 20 1.0 2.5 000 20 20 000 20 20 00 20 20 -- -- --
3NE1 815-0 690 000 25 1.0 4 000 25 25 000 25 25 00 25 25 -- -- --
3NE1 803-0 690 000 35 1.0 6 000 35 35 000 35 35 00 35 35 -- -- --
3NE1 802-0 690 000 40 1.0 10 000 40 40 000 40 40 00 40 40 -- -- --
3NE1 817-0 690 000 50 1.0 10 000 50 50 000 50 50 00 50 50 -- -- --
3NE1 818-0 690 000 63 1.0 16 000 63 63 000 63 63 00 63 63 -- -- --
3NE1 820-0 690 000 80 1.0 25 000 80 80 000 80 80 00 80 80 -- -- --
3NE3 221 1000 1 100 0.95 35 3NP52 1 95 90 3NP1 143 1 88 84 3NP1 153 2 95 90 On
request 1) -- -- --
3NE3 222 1000 1 125 0.95 50 1 110 110 1 102 97 2 110 105 -- -- --
3NE3 224 1000 1 160 1.0 70 1 140 140 1 130 130 2 140 140 -- -- --
3NE3 225 1000 1 200 1.0 95 1 175 175 1 163 163 2 175 175 -- -- --
3NE3 227 1000 1 250 1.0 120 1 210 210 1 195 195 2 210 210 -- -- --
3NE3 230-0B 1000 1 315 0.95 185 3NP53 2 285 280 3NP1 153 2 270 257 On
request 1) -- -- --
3NE3 231 1000 1 350 0.95 240 2 310 300 2 290 276 -- -- --
3NE3 232-0B 1000 1 400 0.90 240 2 330 320 2 320 288 -- -- --
3NE3 233 1000 1 450 0.90 2× 150 2 360 340 2 360 324 -- -- --
3NE3 332-0B 1000 2 400 1.0 240 3NP54 3 360 345 3NP1 153 2 330 330 3NP1 163 3 360 360 On
request 1) -- -- --
3NE3 333 1000 2 450 1.0 2× 150 3 400 385 2 375 375 -- -- --
3NE3 334-0B 1000 2 500 1.0 2× 150 3 450 450 2 420 420 -- -- --
3NE3 335 1000 2 560 1.0 2× 185 3 510 510 2 475 475 -- -- --
3NE3 336 1000 2 630 1.0 2× 185 3 580 580 2 560 560 -- -- --
3NE3 337-8 900 2 710 1.0 2× 200 3 630 630 2 580 580 -- -- --
3NE3 338-8 800 2 800 0.95 2× 200 3 630 630 2 605 575 -- -- --
3NE3 340-8 690 2 900 0.95 2× 200 3 630 630 2 630 599 -- -- --
3NE4 101 1000 0 32 0.9 6 3NP52 1 32 29 3NP1 143 1 30 27 On
request 1) -- -- --
3NE4 102 1000 0 40 0.9 10 1 40 36 1 35 32 -- -- --
3NE4 117 1000 0 50 0.9 10 1 50 45 1 42 38 -- -- --
3NE4 118 1000 0 63 0.9 16 1 63 57 1 55 50 -- -- --
3NE4 120 1000 0 80 0.9 25 1 80 72 1 71 64 -- -- --
3NE4 121 1000 0 100 0.9 35 1 95 86 1 84 76 -- -- --
3NE4 122 1000 0 125 0.9 50 1 120 108 1 107 96 -- -- --
3NE4 124 1000 0 160 0.9 70 1 150 135 1 134 121 -- -- --
3NE4 327-0B 800 2 250 0.85 120 3NP53/
3NP54
2/
3
210/
220
205/
210
3NP1 153 2 195 166 3NP1 163 3 215 183 On
request 1) -- -- --
3NE4 330-0B 800 2 315 0.85 240 2/
3
270/
285
255/
265
2 240 204 3 270 230 -- -- --
3NE4 333-0B 800 2 450 0.85 2× (30×5) 2/
3
400/
420
370/
380
3NP1 163 3 370 315 -- -- --
3NE4 334-0B 800 2 500 0.85 2× (30×5) 3NP54 3 450 400 3 410 349 On
request 1) -- -- --
3NE4 337 800 2 710 0.95 2× (40×5) 3 600 570 3 540 513 -- -- --
3NE8 015-1 690 00 25 0.95 4 3NP50 00 25 24 3NP1 133 00 25 24 On
request 1) -- -- --
3NE8 003-1 690 00 35 0.95 6 00 33 31 00 32 30 -- -- --
3NE8 017-1 690 00 50 0.90 10 00 45 41 00 43 39 -- -- --
3NE8 018-1 690 00 63 0.95 16 00 54 51 00 52 49 -- -- --
3NE8 020-1 690 00 80 0.95 25 00 68 65 00 65 62 -- -- --
3NE8 021-1 690 00 100 0.95 35 3NP50 00 89 85 3NP1 133 00 85 81 On
request 1) -- -- --
3NE8 022-1 690 00 125 0.95 50 00 106 101 00 100 95 -- -- --
3NE8 024-1 690 00 160 0.95 70 00 130 124 00 120 114 -- -- --
SITOR fuse links Ø min Cu 3NP LV HRC fuse switch disconnectors
Add-on units Busbar devices
Order No. Un BG In WL Order No. BG Imax IWL Order No. BG Imax IWL Order No. BG Imax IWL Order No. BG Imax IWL
V AC A mm2 A A A A
© Siemens AG 2012
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
84 Siemens · 2012
Load rating of SITOR fuse links with 3KL/3KM LV HRC fuse switch disconnectors with fuses
SITOR fuse links Ø min Cu 3KL /3KM switch disconnectors with fuses
3KL... add-on devices 3KM... busbar devices
Order No. Un BG In WL Order
No.
BG Imax IWL Order
No.
BG Imax IWL Order No. BG Imax IWL Order No. BG Imax IWL
V AC A mm2 A A A A
3NC2 423-3C 500 3 150 0.95 70 3KL61 3 145 138 3KL62 3 150 143 -- -- -- -- -- -- -- --
3NC2 425-3C 500 3 200 0.95 95 3 180 171 3 190 181 -- -- -- -- -- --
3NC2 427-3C 500 3 250 0.95 120 3 225 214 3 240 228 -- -- -- -- -- --
3NC2 428-3C 500 3 300 0.95 185 3 255 242 3 270 257 -- -- -- -- -- --
3NC2 431-3C 500 3 350 0.95 240 3 330 314 3 345 328 -- -- -- -- -- --
3NC2 432-3C 500 3 400 0.95 240 3 400 380 3 400 380 -- -- -- -- -- --
3NC3 336-1 1000 3 630 0.85 480 -- -- -- -- 3KL62 3 500 425 -- -- -- -- -- -- -- --
3NC3 337-1 1000 3 710 0.85 560 -- -- -- 3 540 459 -- -- -- -- -- --
3NC3 338-1 1000 3 800 0.85 640 -- -- -- 3 600 510 -- -- -- -- -- --
3NC3 340-1 1000 3 900 0.90 720 -- -- -- 3 650 585 -- -- -- -- -- --
3NC3 341-1 1000 3 1000 0.90 800 -- -- -- 3 720 648 -- -- -- -- -- --
3NC3 342-1 800 3 1100 0.90 880 -- -- -- 3 800 720 -- -- -- -- -- --
3NC3 343-1 800 3 1250 0.90 960 -- -- -- 3 800 720 -- -- -- -- -- --
3NC8 423-3C 660 3 150 0.85 70 3KL61 3 135 115 3KL62 3 140 119 -- -- -- -- -- -- -- --
3NC8 425-3C 660 3 200 0.85 95 3 180 153 3 190 162 -- -- -- -- -- --
3NC8 427-3C 660 3 250 0.85 120 3 225 191 3 240 204 -- -- -- -- -- --
3NC8 431-3C 660 3 350 0.85 240 3 300 255 3 315 268 -- -- -- -- -- --
3NC8 434-3C 660 3 500 0.85 2 × 150 3 425 361 3 450 383 -- -- -- -- -- --
3NC8 444-3C 600 3 1000 0.95 2 ×
(60 x 6)
3 800 800 3 630 630 -- -- -- -- -- --
3NE1 020-2 690 00 80 1.0 25 3KL52 00 80 80 3KL53 00 80 80 3KM52 00 80 80 3KM53 00 80 80
3NE1 021-0 690 00 100 1.0 35 00 100 100 00 100 100 00 100 100 00 100 100
3NE1 021-2 690 00 100 1.0 35 00 100 100 00 100 100 00 100 100 00 100 100
3NE1 022-0 690 00 125 1.0 125 00 125 125 00 125 125 00 125 125 00 125 125
3NE1 022-2 690 00 125 1.0 125 00 125 125 00 125 125 00 125 125 00 125 125
3NE1 224-0 690 1 160 1.0 70 3KL55 1 160 160 3KL57 2 160 160 3KM55 1 160 160 3KM57 2 160 160
3NE1 224-2 690 1 160 1.0 70 1 160 160 2 160 160 1 160 160 2 160 160
3NE1 224-3 690 1 160 1.0 70 1 160 160 2 160 160 1 160 160 2 160 160
3NE1 225-0 690 1 200 1.0 95 1 200 200 2 200 200 1 200 200 2 200 200
3NE1 225-2 690 1 200 1.0 95 1 200 200 2 200 200 1 200 200 2 200 200
3NE1 225-3 690 1 200 1.0 95 1 200 200 2 200 200 1 200 200 2 200 200
3NE1 227-0 690 1 250 1.0 120 1 250 250 2 250 250 1 250 250 2 250 250
3NE1 227-2 690 1 250 1.0 120 1 245 245 2 250 250 1 245 245 2 250 250
3NE1 227-3 690 1 250 1.0 120 1 245 245 2 250 250 1 245 245 2 250 250
3NE1 230-0 690 1 315 1.0 2× 70 3KL57 2 315 315 -- -- -- -- 3KM57 2 315 315 -- -- -- --
3NE1 230-2 690 1 315 1.0 2× 70 2 280 280 -- -- -- 2 280 280 -- -- --
3NE1 230-3 690 1 315 1.0 2× 70 2 280 280 -- -- -- 2 280 280 -- -- --
3NE1 331-0 690 2 350 1.0 2× 95 3KL57 2 330 330 3KL61 3 350 350 3KM57 2 330 330 -- -- -- --
3NE1 331-2 690 2 350 1.0 2× 95 2 300 300 3 350 350 2 300 300 -- -- --
3NE1 331-3 690 2 350 1.0 2× 95 2 300 300 3 350 350 2 300 300 -- -- --
3NE1 332-0 690 2 400 1.0 2× 95 2 375 375 3 400 400 2 375 375 -- -- --
3NE1 332-2 690 2 400 1.0 2× 95 2 340 340 3 400 400 2 340 340 -- -- --
3NE1 332-3 690 2 400 1.0 2× 95 2 340 340 3 400 400 2 340 340 -- -- --
3NE1 333-0 690 2 450 1.0 2× 120 3KL61 3 450 450 3KL62 3 450 450 2 400 400 -- -- --
3NE1 333-2 690 2 450 1.0 2× 120 3 450 450 3 450 500 2 325 325 -- -- --
3NE1 333-3 690 2 450 1.0 2× 120 3 450 450 3 450 500 2 325 325 -- -- --
3NE1 334-0 690 2 500 1.0 2× 120 3 500 500 3 500 500 2 400 400 -- -- --
3NE1 334-2 690 2 500 1.0 2× 120 3 500 500 3 500 500 2 350 350 -- -- --
3NE1 334-3 690 2 500 1.0 2× 120 3 500 500 3 500 500 2 350 350 -- -- --
3NE1 435-0 690 3 560 1.0 2× 150 3KL61 3 560 560 3KL62 3 560 560 -- -- -- -- -- -- -- --
3NE1 435-2 690 3 560 1.0 2× 150 3 560 560 3 560 560 -- -- -- -- -- --
3NE1 435-3 690 3 560 1.0 2× 150 3 560 560 3 560 560 -- -- -- -- -- --
3NE1 436-0 690 3 630 1.0 2× 185 3 630 630 3 630 630 -- -- -- -- -- --
3NE1 436-2 690 3 630 1.0 2× 185 3 615 615 3 630 630 -- -- -- -- -- --
3NE1 436-3 690 3 630 1.0 2× 185 3 615 615 3 630 630 -- -- -- -- -- --
3NE1 437-0 690 3 710 1.0 2× (40×5) 3 630 630 3 710 710 -- -- -- -- -- --
3NE1 437-1 600 3 710 1.0 2× (40×5) 3 630 630 3 710 710 -- -- -- -- -- --
3NE1 437-2 690 3 710 1.0 2× (40×5) 3 630 630 3 700 700 -- -- -- -- -- --
3NE1 437-3 690 3 710 1.0 2× (40×5) 3 630 630 3 700 700 -- -- -- -- -- --
3NE1 438-0 690 3 800 1.0 2× (50×5) 3KL61 3 630 630 3KL62 3 800 800 -- -- -- -- -- -- -- --
3NE1 438-1 600 3 800 1.0 2× (50×5) 3 630 630 3 800 800 -- -- -- -- -- --
3NE1 438-2 690 3 800 1.0 2× (50×5) 3 630 630 3 760 760 -- -- -- -- -- --
3NE1 438-3 690 3 800 1.0 2× (50×5) 3 630 630 3 760 760 -- -- -- -- -- --
3NE1 447-2 690 3 670 1.0 2× (40×5) 3 630 630 3 670 670 -- -- -- -- -- --
3NE1 447-3 690 3 670 1.0 2× (40×5) 3 630 630 3 670 670 -- -- -- -- -- --
3NE1 448-2 690 3 850 1.0 2× (40×8) 3 630 630 3 790 790 -- -- -- -- -- --
3NE1 448-3 690 3 850 1.0 2× (40×8) 3 630 630 3 790 790 -- -- -- -- -- --
© Siemens AG 2012
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
85 Siemens · 2012
Un = Rated voltage
BG = Size
In = Rated current
WL = Varying load factor
Ømin Cu = Required conductor cross-section Cu
Imax = Maximum permissible current
IWL = Maximum permissible current with varying load
3NE1 813-0 690 000 16 1.0 1.5 3KL50 00 16 16 3KL52 00 16 16 3KM50 00 16 16 3KM52 00 16 16
3NE1 814-0 690 000 20 1.0 2.5 00 20 20 00 20 20 00 20 20 00 20 20
3NE1 815-0 690 000 25 1.0 4 00 25 25 00 25 25 00 25 25 00 25 25
3NE1 803-0 690 000 35 1.0 6 00 35 35 00 35 35 00 35 35 00 35 35
3NE1 802-0 690 000 40 1.0 10 00 40 40 00 40 40 00 40 40 00 40 40
3NE1 817-0 690 000 50 1.0 10 00 50 50 00 50 50 00 50 50 00 50 50
3NE1 818-0 690 000 63 1.0 16 00 63 63 00 63 63 00 63 63 00 63 63
3NE1 820-0 690 000 80 1.0 25 3KL52 00 80 80 -- -- -- -- 3KM52 00 80 80 -- -- -- --
3NE3 221 1000 1 100 0.95 35 3KL55 1 90 86 3KL57 2 95 90 3KM55 1 90 86 3KM57 2 95 90
3NE3 222 1000 1 125 0.95 50 1 110 105 2 115 109 1 110 105 2 115 109
3NE3 224 1000 1 160 1.0 70 1 140 140 2 150 150 1 140 140 2 150 150
3NE3 225 1000 1 200 1.0 95 1 175 175 2 180 180 1 175 175 2 180 180
3NE3 227 1000 1 250 1.0 120 1 210 210 2 220 220 1 210 210 2 220 220
3NE3 230-0B 1000 1 315 0.95 185 3KL57 2 240 228 -- -- -- -- 3KM57 2 240 228 -- -- -- --
3NE3 231 1000 1 350 0.95 240 2 265 252 -- -- -- 2 265 252 -- -- --
3NE3 232-0B 1000 1 400 0.90 240 2 290 261 -- -- -- 2 290 261 -- -- --
3NE3 233 1000 1 450 0.90 2× 150 2 320 288 -- -- -- 2 320 288 -- -- --
3NE3 332-0B 1000 2 400 1.0 240 3KL61 3 340 340 3KL62 3 360 360 3KM57 2 290 290 -- -- -- --
3NE3 333 1000 2 450 1.0 2× 150 3 380 380 3 400 400 2 320 320 -- -- --
3NE3 334-0B 1000 2 500 1.0 2× 150 3 440 440 3 470 470 2 360 360 -- -- --
3NE3 335 1000 2 560 1.0 2× 185 3 500 500 3 530 530 2 400 400 -- -- --
3NE3 336 1000 2 630 1.0 2× 185 3 540 540 3 580 580 2 400 400 -- -- --
3NE3 337-8 900 2 710 1.0 2× 200 3 600 600 3 640 640 2 400 400 -- -- --
3NE3 338-8 800 2 800 0.95 2× 200 3 630 630 3 720 680 2 400 400 -- -- --
3NE3 340-8 690 2 900 0.95 2× 200 3 630 630 3 800 750 2 400 400 -- -- --
3NE4 101 1000 0 32 0.9 6 3KL55 1 32 29 -- -- -- -- 3KM55 1 32 29 -- -- -- --
3NE4 102 1000 0 40 0.9 10 1 40 36 -- -- -- 1 40 36 -- -- --
3NE4 117 1000 0 50 0.9 10 1 50 45 -- -- -- 1 50 45 -- -- --
3NE4 118 1000 0 63 0.9 16 1 63 57 -- -- -- 1 63 57 -- -- --
3NE4 120 1000 0 80 0.9 25 1 80 72 -- -- -- 1 80 72 -- -- --
3NE4 121 1000 0 100 0.9 35 1 95 86 -- -- -- 1 95 86 -- -- --
3NE4 122 1000 0 125 0.9 50 1 120 108 -- -- -- 1 120 108 -- -- --
3NE4 124 1000 0 160 0.9 70 1 150 135 -- -- -- 1 150 135 -- -- --
3NE4 327-0B 800 2 250 0.85 120 3KL57 2 175 149 3KL61 3 200 170 3KM57 2 175 149 -- -- -- --
3NE4 330-0B 800 2 315 0.85 240 2 230 196 3 260 221 2 230 196 -- -- --
3NE4 333-0B 800 2 450 0.85 2× (30×5) 2 340 289 3 370 315 2 340 289 -- -- --
3NE4 334-0B 800 2 500 0.85 2× (30×5) 3KL61 3 425 361 3KL62 3 450 375 2 380 323 -- -- --
3NE4 337 800 2 710 0.95 2× (40×5) 3 600 570 3 630 600 2 400 400 -- -- --
3NE8 015-1 690 00 25 0.95 4 3KL50 00 25 24 3KL52 00 25 24 3KM50 00 25 24 3KM52 00 25 24
3NE8 003-1 690 00 35 0.95 6 00 33 31 00 35 33 00 33 31 00 35 33
3NE8 017-1 690 00 50 0.90 10 00 45 41 00 50 45 00 45 41 00 50 45
3NE8 018-1 690 00 63 0.95 16 00 54 51 00 60 57 00 54 51 00 60 57
3NE8 020-1 690 00 80 0.95 25 3KL52 00 68 65 3KL53 00 68 65 3KM52 00 68 65 3KM53 00 68 65
3NE8 021-1 690 00 100 0.95 35 3KL52 00 89 85 3KL53 00 89 85 3KM52 00 89 85 3KM53 00 89 85
3NE8 022-1 690 00 125 0.95 50 00 106 101 00 106 101 00 106 101 00 106 101
3NE8 024-1 690 00 160 0.95 70 00 130 124 00 130 124 00 130 124 00 130 124
SITOR fuse links Ø min Cu 3KL /3KM switch disconnectors with fuses
3KL... add-on devices 3KM... busbar devices
Order No. Un BG In WL Order
No.
BG Imax IWL Order
No.
BG Imax IWL Order No. BG Imax IWL Order No. BG Imax IWL
V AC A mm2 A A A A
© Siemens AG 2012
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
86 Siemens · 2012
■Dimensional drawings
3NC2 4. .-0C, 3NC8 4. .-0C 3NC2 4. .-3C, 3NC8 4. .-3C
3NE1 43.-0, 3NE1 43.-1 3NE1 4. .-3 3NE1 2. .-3, 3NE1 3. .-3
Type Dimensions (mm)
a b c d e f g
3NE1 2. .-3 135 31 12.5 40.5 13.5 52 63.5
3NE1 3. .-3 149 38 19.5 47.5 15 60 72
18
11,5
32
Ø75
17,6 59,4 9
I2_13719a
18
11,5
18
32
Ø75
17,6 59,4 9
I2_13721a
I2_06717
60,4
82,1
70
32
I2_13936
60,4
82,1
70
32
13
32
12,512,5
10,5
d e f g
© Siemens AG 2012
71,5
109
61
141
6
10
19
11,5
71,5
109
61
141
6
10
19
70 151
10
6
68
2,5
73
70
151
10
6
68
2,5
73
13
110
I2_06473b 10
73 10,5
110
a f c b 6
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
87 Siemens · 2012
3NE8 7. .-1 3NE1 8. .-0 3NE1 02.-0, 3NE1 02.-2, 3NE8 0. .-1
3NE1 2. .-0, 3NE1 2. .-2 3NE1 33.-0, 3NE1 33.-2 3NE1 4. .-2
8,5
21
I2_06713
53,3
35,8
15
40,5
I2_06714
48
60
35,8
15
40,5
52
I2_06715
25
63,5
47,5
25
72
60
© Siemens AG 2012
8,5
78
100
54
I2_11343
40
6
79,9
50,3
2,3 10
20
21
53,8
53
49,4
2,2 10
6
30 79
10
52
73
66,5
3 6
135
I2_07071
60
6
10
66,5
3
73
149
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
88 Siemens · 2012
3NC3 2. .-1, 3NC3 3. .-1 3NC3 2. .-6, 3NC3 3. .-6
Type Dimensions (mm) Type Dimensions (mm)
a b c d a b
3NC3 2. .-1 102 51 78 40 3NC3 2. .-6 52 50
3NC3 3. .-1 139 72 108 61 3NC3 3. .-6 73 71
18
13
18
32,2
Ø75
17,5 60 9
2,6
I2_13470
Ø30
M12
I2_13469
Ø75
3NE4 3. .-0B, 3NE4 337 3NE4 1. . 3NE3 22., 3NE3 23., 3NE3 3. .
Type Dimensions (mm)
a b c d e f g
3NE3 22. 135 31 12.5 40.5 13.5 52 63.5
3NE3 23. 135 31 12.5 40.5 13.5 52 63.5
3NE3 3. . 149 38 19.5 47.5 15 60 72
60
71
48
I2_11338
10,5
14,5 11,5 12,5
14,5 11,5 12,5
47
15 14
58
I2_06450a
12,512,5
10,5
d e f g
© Siemens AG 2012
bc
13
16
2 da 610 19
ba 0,7
10
6
60
107,5
141,5
73,5
10,5
10
30
6 65
68
125
2,5
I2_06473b 10
73 10,5
110
a f c b 6
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
89 Siemens · 2012
3NE3 . . .-0C, 3NE3 6. .-1C 3NC3 4. .-1 3NC3 4. .-6
18
a
18
32
Ø75
17,6 59,4 9
I2_13722a
18
13
18
32,2
Ø75
17,5 60 9
2,6
I2_13470
Ø30
M12
I2_13469
Ø75
Type Dimensions (mm) Type Dimensions (mm) Type Dimensions (mm)
a b a b c d a b
3NE3. . .-0C 11.5 161 3NC3 4. .-1 139 72 108 61 3NC3 4. .-6 73 71
3NE3 6. .-1C 13 171
3NE3 635-6
10
70
M10
Ø28
© Siemens AG 2012
91,5
129
a
81
b 6
10
19
bc
13
16
2 da 610 19
ba 0,7
70 96
109
10
81,5
I2_11340a
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
90 Siemens · 2012
3NE5 6. .-0C 3NE5 4. .-0C, 3NE5 4. .-1C;
3NE7 . . .-0C, 3NE7 . . .-1C
3NE9 6. .-1C
18
e
18
32
Ø75
17,6 59,4 9
I2_13723
18
a
18
32
Ø75
17,6 59,4 9
I2_13724a
18
13
18
32
Ø75
17,6 59,4 9
I2_13725a
Type Dimensions (mm) Type Dimensions (mm)
a b c d e a
3NE5 6. .-0C 201 169 121 131.5 11.5 3NE5 4. .-0C 11.5
3NE5 4. .-1C 13
3NE7. . .-0C 11.5
3NE7. . .-1C 13
© Siemens AG 2012
db e ca 610
19
171,5
209
a
161
241
6
10
19
219,5
257
13
208,5
289
6
10
19
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
91 Siemens · 2012
3NC5 531 3NC5 8. . 3NE6 4. .-7, 3NE9 4. .-7 3NE6 4. ., 3NE9 4. .
M10
M10
Ø50
Ø50
Ø28
M10
M24
M10
Ø73
Ø40
70
M10
100
125
10
Ø11
Ø28
10
70
M10
Ø28
Type Dimensions (mm)
a b c
3NC5 838 98 88.5 25
3NC5 841 98 88.5 25
3NC5 840 119 109.5 20.5
Type Dimensions (mm)
a b
3NE6 437 89 76
3NE9 450 89 76
3NE9 440-6 89 76
3NE6 444 99 86
3NE3. . .-5 3NE4 1. .-5 3NE4 3. .-6B, 3NE4 337-6 3NC7 3. .-2
73
60
M10
82,5
Ø20
53
30 10
54
10,4
60
M10
Ø20
57
119
10,5 10,5
© Siemens AG 2012
SW41
91
9
24,5
0,3
I2_11369a
SW41 b
a c
11
I2_11370a
70
83
10
81,5
75,5
I2_11372a
70 ba
10
81,5
I2_11371a
77 55
15
60
10,5
I2_11373a
66
47
52
57
62
26
40
I2_11375a
I2_11374a
60 76
15
77
12,5 68
57
30
7 79
I2_11376a
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
92 Siemens · 2012
■Characteristic curves
Series 3NC2 4. .
Size: 3
Operational class: gR or aR
Rated voltage: 500 V AC
Rated current: 150 ... 400 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
p [A]
150 A 250 A 350 A
200 A 300 A 400 A
104 642
10 3 642
10 2 642
10 1 642
10 0 642
10 -1
642 8 104 4 6 2 8 103 4 6
10 -2
642
10 -3
2 10 2
Prospective short-circuit current
p
103 2 6 4 104 8
10
246
1043 2 6 4 105 8 2 246
105
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
0 100 200 300 400 500 600
1 w
0,8
0,6
0,4
0,2
Recovery voltage
0.8
0.6
0.4
0.2
0 200 400 600 800
400
800
1200
w
1400
1000
600
200
0
Recovery voltage
© Siemens AG 2012
vs [s]
I201_10809
Virtual pre-arcing time
c
I2_10812
Let-through current
A
I2_10810
Correction factor
s
I2_10811
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
93 Siemens · 2012
3NC3 2 series
Size: 3
Operational class: aR
Rated voltage: 690 V AC (630 ... 1250 A),
500 V AC (1400 ... 1600 A)
Rated current: 630 ... 1600 A
Time/current characteristics diagram Let-through characteristic curves
Correction factor kA for breaking I2t value Peak arc voltage
10 4
6
4
2
10 3
6
4
2
10 2
6
4
2
10 1
6
4
2
10 0
6
4
2
10 -1
6
4
2
10 -2
10
10 2 4 6 8 10
-3
2 3 2 4 6 8 10 4 2 4 6 8 10 5
6
4
2
Ip [A]
1600 A
1400 A
1250 A
1100 A
1000 A
900 A
800 A
710 A
630 A
Permissible
overload
Melting
Prospective short-circuit current
p 3
10
10 2 4 6 8 4 10 2 4 6 8 10 5 246
10 43 246
10 5
[A]
1600 A
1400 A
1250 A
1100 A
1000 A
900 A
800 A
710 A
630 A
Prospective short-circuit current I
U
0 100 200 300 400 500 600
1
700 800
w [V]
U n = 500 V
U n = 690 V
Recovery voltage
0,2
0,4
0,6
0,8
0 200 400 600 800
400
200
600
800
1200
1000
1400
1600
0
Recovery voltage U w [V]
© Siemens AG 2012
vs
I2_13402
t [s] Virtual melting time
[A] Ic
I201_13405a
Let-through current
I2_13403
2 2 Correction factor for breaking value [A s] I t
I2_13404
Peak arc voltage [V] Û s
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
94 Siemens · 2012
3NC3 3 series
Size: 3
Operational class: aR
Rated voltage: 1000 V AC (630 ... 1000 A),
800 V AC (1100 ... 1250 A)
Rated current: 630 ... 1250 A
Time/current characteristics diagram Let-through characteristic curves
Correction factor kA for breaking I2t value Peak arc voltage
10 4
6
4
2
10 3
6
4
2
10 2
6
4
2
10 1
6
4
2
10 0
6
4
2
10 -1
6
4
2
10 -2
10
10 2 4 6 8 10
-3
2 3 2 4 6 8 10 4 2 4 6 8 10 5
6
4
2
Ip [A]
1250 A
1100 A
1000 A
900 A
800 A
710 A
630 A
Prospective short-circuit current
Permissible
overload
Prearcing
p
3
10
10 2 4 6 8 4 10 2 4 6 8 10 5
2
4
6
10 4
3
2
4
6
10 5
[A]
1250 A
1100 A
1000 A
900 A
800 A
710 A
630 A
Prospective short-circuit current I
U
0 200 400 600
1
800 1000
w [V]
U n = 800 V
U n = 1000 V
Recovery voltage
0,2
0,4
0,6
0,8
0 200 400 600 800 1000 1200
400
800
1600
2000
1200
2400
2600
0
Recovery voltage U w [V]
© Siemens AG 2012
vs
I2_13406
[s] t Virtual pre-arcing time
c
I2_13409
[A] Let-through current I
I2_13407
2 2 Correction factor for breaking -value [A s] I t
I2_13408
Peak arc voltage [V] Û s
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
95 Siemens · 2012
3NC3 4 series
Size: 3
Operational class: aR
Rated voltage: 1250 V AC (315 ... 630 A),
1100 V AC (800 A)
Rated current: 315 ... 800 A
Time/current characteristics diagram Let-through characteristic curves
Correction factor kA for breaking I2t value Peak arc voltage
104 642
103 642
102 642
101 642
100 642
10-1
642
10-2
10
10 2 4 6 810
-3
2 3 2 4 6 8104 2 4 6 8105 642 Ip [A]
800 A
630 A
500 A
400 A
315 A
Permissible
overload
Prearcing
Prospective short-circuit current
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
800 A
630 A
500 A
400 A
315 A
p 3 10 2 4 6 8 4 10 2 2 4 68 10 5 I [A]
10
246
10 43 246
10 5 U
200 400 600 800 1000
1
1200 1400
w [V]
800 A
315 A ... 630 A
Recovery voltage
0.4
0.6
0.8
0.2
0 200 400 600 800 1000 1400
500
2000
2500
1000
1500
3000
0 Uw [V]
1200
Recovery voltage
© Siemens AG 2012
vs
I201_17061
t Peak arc voltage [s]
Let-through current
I201_17058
[A] Ic
I201_17059
2 2 Correction factor for breaking value [A s] t
I2_17060
Peak arc voltage [V] Ûs
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
96 Siemens · 2012
Series 3NC5 531, 3NC5 8. .
Operational class: aR
Rated voltage: 800 V AC (350 A, 630 A),
1000 V AC (600 A, 800 A)
Rated current: 350 ... 800 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
p 2 102
10-3
246
10-2
6 4 103 82 6 4 104 8 24
246
10-1
246
100 246
101 246
102 246
103 246
104 6 8 105
[A] Prospective short-circuit current
p [A]
103
10
2462464
105
103
105 2 4 104 2 6 4 8 2 6 4 8
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
0 200 400 600
1
800 1000
w [V]
0.8
0.6
0.4
0.2
Recovery voltage
0 200 400 600 800 1000 1200
400
1200
1600
2000
0 w
200
600
800
1000
1400
1800
Recovery voltage
© Siemens AG 2012
vs
I2_11432
[s] Virtual pre-arcing time
[A] c
I2_11433
Let-through current
A
I2_11434
Correction factor
s
I2_11435
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
97 Siemens · 2012
Series 3NC7 3. .-2
Operational class: aR
Rated voltage: 680 V AC
Rated current: 250 A, 350 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
p 2 102
10-3
246
10-2
6 4 103 82 6 4 104 8 24
246
10-1
246
100 246
101 246
102 246
103 246
104 6 8 105
[A] Prospective short-circuit current
p [A]
103
10
2462464
105
103
105 2 4 104 2 6 4 8 2 6 4 8
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
0 100 200 300 400 500 600
1
700 800
w Recovery voltage
0.2
0.4
0.6
0.8
0 200 400 600 800 1000 1200
400
1200
1600
2000
0 w
200
600
800
1000
1400
1800
Recovery voltage
© Siemens AG 2012
vs
I2_11449
[s] Virtual pre-arcing time
[A] c
I2_11450
Let-through current
A
I2_11451
Correction factor
s
I2_11452
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
98 Siemens · 2012
Series 3NC8 4. .
Size: 3
Operational class: gR or aR
Rated voltage: 660 V AC
Rated current: 150 ... 1000 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
p 2 102
10-3
246
10-2
6 4 103 82 6 4 104 8 24
246
10-1
246
100 246
101 246
102 246
103 246
104 6 8 105
Prospective short-circuit current
10 2 2 6 4 10 8
10
2462464 p [A]
10 5
10 3 3 2 6 4 10 8 4 2 6 4 10 8 5 2 4
150 A
200 A
250 A
350 A
500 A
1000 A
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
0 100 200 300 400 500 600
1
700 800
w Recovery voltage
0.2
0.4
0.6
0.8
0 200 400 600 800
400
800
1200
w
1400
1000
600
200
0
Recovery voltage
© Siemens AG 2012
vs
I2_10821
Virtual pre-arcing time
[A] c
I201_10824a
Let-through current
A
I2_10822
Correction factor
s
I2_10823
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
99 Siemens · 2012
Series 3NE1 02.-0, 3NE1 2. .-0
Size: 00, 1
Operational class: gS
Rated voltage: 690 V AC
Rated current: 100 ... 315 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
p 2 102
10-3
246
10-2
6 4 103 82 6 4 8 104 246
10-1
246
100 246
101 246
102 246
103 246
104
Prospective short-circuit current
p
103 2 6 4 104 8
10
246
1043 2 6 4 105 8 2 246
105
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
0 100 200 300 400 500 600
1
700 800
w Recovery voltage
0.2
0.4
0.6
0.8
200 400 500 600 700 800 100
w
300
1400
1200
1000
800
600
400
200
00
Recovery voltage
© Siemens AG 2012
vs
I2_10829
Virtual pre-arcing time
c
I2_10831
Let-through current
A
I2_10830
Correction factor
s Peak arc voltage
I2_10827
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
100 Siemens · 2012
Series 3NE1 02.-2, 3NE1 2. .-2, 3NE1 2. .-3, 3NE1 3. .-2, 3NE1 3. .-3
Sizes: 00, 1, 2
Operational class: gR
Rated voltage: 690 V AC
Rated current: 80 ... 500 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
10-3
10-2
246
10-1
246
100 246
101 246
102 246
103 2466
104 24
2 4
A p
105 2 46 104 2 46 103 102
80 A
100 A
125 A
160 A
200 A
250 A
315 A
350 A
400 A
450 A
500 A
Prospective short-circuit current
102 103 104 10
A 5
103 246
104
105 246
2 46 2 46 2 46
p
160 A
125 A
100 A
80 A
500 A
450 A
400 A
350 A
315 A
250 A
200 A
Prospective short-circuit current
0
0
100 200 300 400 500 600 700 800
1
80 A - 125 A
160 A - 315 A
350 A - 500 A
Recovery voltage
0,2
0,4
0,6
0,8
2000
400
800
1200
1600
800 200 0
0
400 600
160...315 A
80...125 A
350...500 A
Recovery voltage
© Siemens AG 2012
[s] tVS
I2_10839a
Virtual pre-arcing time
A
I2_10842a
C Peak let-through current
I2_10840
Correction factor
I2_10841
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
101 Siemens · 2012
Series 3NE1 33.-0, 3NE1 43.-0
Size: 2, 3
Operational class: gS
Rated voltage: 690 V AC
Rated current: 350 ... 800 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
p 2 102
10-3
246
10-2
6 4 103 82 6 4 104 8 24
246
10-1
246
100 246
101 246
102 246
103 246
104 6 8 105
Prospective short-circuit current
p
103 2 6 4 104 8
10
246
1043 2 6 4 105 8 2 246
105
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
0 100 200 300 400 500 600
1
700 800
w Recovery voltage
0.2
0.4
0.6
0.8
200 400 500 600 700 800 100
w
300
1400
1200
1000
800
600
400
200
00
Recovery voltage
© Siemens AG 2012
vs
I2_10832
Virtual pre-arcing time
c
I2_10834
Let-through current
A
I2_10833
Correction factor
I2_10833
s Peak arc voltage
I2_10827
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
102 Siemens · 2012
Series 3NE1 4. .-2, 3NE1 4. .-3
Size: 3
Operational class: gR
Rated voltage: 690 V AC
Rated current: 560 ... 850 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
10
-3
10
-2
2
4
6
10
-1
2
4
6
10
0
2
4
6
10
1
2
4
6
10
2
2
4
6
10
3
2
4
6
6
10
4
2
4
2 4 6
p
10
5 2 4 6 10
4 2 4 6 10
3 10
2
560 A
630 A
670 A
710 A
800 A
850 A
Prospective short-circuit current
10
2 10
3 10
4 10
5
10
3
2
4
6
10
4
10
5
2
4
6
2 4 6 2 4 6 2 4 6
p
850 A
800 A
710 A
670 A
630 A
560 A
Prospective short-circuit current
0
0
100 200 300 400 500 600 700 800
1
Recovery voltage
0.2
0.4
0.6
0.8
2000
400
800
1200
1600
800 200 0
0
400 600
Recovery voltage
© Siemens AG 2012
[s] tVS
I2_10843
Virtual pre-arcing time
I2_10846
C Peak let-through current
I2_10844
Correction factor
I2_10845
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
103 Siemens · 2012
Series 3NE1 437-1, 3NE1 438-1
Size: 3
Operational class: gR
Rated voltage: 600 V AC
Rated current: 710 and 800 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
p 2 102
10-3
246
10-2
6 4 103 82 6 4 104 8 24
246
10-1
246
100 246
101 246
102 246
103 246
104 6 8 105
Prospective short-circuit current
p
103 2 6 4 104 8
10
246
1054 2 6 4 105 8 2
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
0 100 200 300 400 500 600
1
700 800
w Recovery voltage
0.2
0.4
0.6
0.8
200 400 500 600 700 800 100
w
300
1400
1200
1000
800
600
400
200
00
Recovery voltage
© Siemens AG 2012
vs
I2_10835
Virtual pre-arcing time
c
I2_10838
Let-through current
A
I2_10836
Correction factor
I2_10836
s
I2_10837
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
104 Siemens · 2012
Series 3NE1 8. .-0
Size: 000
Operational class: gS
Rated voltage: 690 V AC
Rated current: 16 ... 80 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
p 2 101
10-3
246
10-2
6 4 102 82 6 4 103 8 24
246
10-1
246
100 246
101 246
102 246
103 246
104 6 8 104
Prospective short-circuit current
10 2 2 6 4 10 8
10
2462463 p [A]
104
10 2 3 2 6 4 10 8 4 2 6 4 10 8 5 2 4
20 A
25 A
35 A
40 A
50 A
63 A
16 A
80 A
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 % 0 100 200 300 400 500 600
1
700 800
w Recovery voltage
0.2
0.4
0.6
0.8
200 400 500 600 700 800 100
w
300
1400
1200
1000
800
600
400
200
00
Recovery voltage
© Siemens AG 2012
vs
I2_10825
Virtual pre-arcing time
[A] c
I201_10828a
Let-through current
A
I2_10826
Correction factor
s Peak arc voltage
I2_10827
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
105 Siemens · 2012
Series 3NE3 22.
Size: 1
Operational class: aR
Rated voltage: 1000 V AC
Rated current: 100 ... 250 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
p 2 101
10-3
246
10-2
6 4 102 82 6 4 103 8 24
246
10-1
246
100 246
101 246
102 246
103 246
104 6 8 104
Prospective short-circuit current
102 2 6 4 10 8
10
2462463 p [A]
104
102 3 2 6 4 10 8 4 2 6 4 10 8 5 2 4 2
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
0 200 400 600
1
800 1000
w
0.8
0.6
0.4
0.2
Recovery voltage
0 200 400 600 800 1000 1200
500
1000
1500
2000
2500
0 w Recovery voltage
© Siemens AG 2012
vs
I2_10859
Virtual pre-arcing time
[A] c
I2_10862
Let-through current
A
I2_10860
Correction factor
s
I2_10861
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
106 Siemens · 2012
Series 3NE3 23.
Size: 1
Operational class: aR
Rated voltage: 1000 V AC
Rated current: 315 ... 450 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
p 2 102
10 -3 246
10 -2
6 4 103 8 2 6 4 8 104 246
10 -1
246
10 0 246
10 1 246
10 2 246
10 3 246
104
450 A
[A]
400 A
350 A
315 A
Prospective short-circuit current
p
103 2 6 4 104 8
10
246
1043 2 6 4 105 8 2 246
105
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
0 200 400 600
1
800 1000
w
0.8
0.6
0.4
0.2
Recovery voltage 0 200 400 600 800 1000 1200
500
1000
1500
2000
2500
0 w Recovery voltage
© Siemens AG 2012 I201_10863a
[s] vs Virtual pre-arcing time
c
I2_10864
Let-through current
A
I2_10860
Correction factor
s
I2_10861
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
107 Siemens · 2012
Series 3NE3 3. .
Size: 2
Operational class: aR
Rated voltage: 1000 V AC (up to 630 A)
900 V AC (710 A)
800 V AC (800 A)
690 V AC (900 A)
Rated current: 400 ... 900 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
p 2 102
10-3
246
10-2
6 4 103 82 6 4 104 8 24
246
10-1
246
100 246
101 246
102 246
103 246
104 6 8 105
Prospective short-circuit current
p
103 2 6 4 104 8
10
246
1043 2 6 4 105 8 2 246
105
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
0 200 400 600
1
800 1000
w
0.8
0.6
0.4
0.2
Recovery voltage 0 200 400 600 800 1000 1200
500
1000
1500
2000
2500
0 w Recovery voltage
© Siemens AG 2012
vs
I2_10865
Virtual pre-arcing time
c
I2_10867
Let-through current
A
I2_10866
Correction factor
s
I2_10861
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
108 Siemens · 2012
Series 3NE3 4. ., 3NE3 6. .
Size: 3
Operational class: aR
Rated voltage: 1000 V AC
Rated current: 100 ... 710 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
p 2 102
10-3
246
10-2
6 4 103 82 6 4 104 8 24
246
10-1
246
100 246
101 246
102 246
103 246
104 6 8 105
Prospective short-circuit current
p
103 2 6 4 104 8 2 64 8 105 2 6 8
10
246
1043 24
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
0 200 400 600
1
800 1000
w
0.8
0.6
0.4
0.2
Recovery voltage U
0 200 400 600 800 1000 1200
400
800
1200
2000
0 w
200
600
1000
1400
1600
1800
Recovery voltage
© Siemens AG 2012
vs
I2_10868
Virtual pre-arcing time
I2_10871
Let-through current c A I2_10869 Correction factor Ûs
I2_10870
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
109 Siemens · 2012
Series 3NE3 5.5-5, 3NE4 1. .-5
Operational class: aR, gR
Rated voltage: 800 V AC (170 A)
1000 V AC (50 A, 100 A, 200 A, 450 A)
Rated current: 50 ... 450 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
p 2 101
10-3
246
10-2
6 4 102 82 6 4 103 8 24
246
10-1
246
100 246
101 246
102 246
103 246
104 6 8 104
[A] Prospective short-circuit current
102 2 6 4 10 8
10
2463 p [A]
102 3 2 6 4 10 8 4 2 6 4 10 8 5 2 4
10
2464 24
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
0 200 400 600 800 1000
w [V]
1
Recovery voltage
0.8
0.6
0.4
0.2
0 200 400 600 800 1000 1200
400
1200
1600
2000
0 w
200
600
800
1000
1400
1800
Recovery voltage
© Siemens AG 2012
vs
I2_11441
[s] Virtual pre-arcing time
[A] c
I2_11442
Let-through current
A
I2_11443
Correction factor
s
I2_11444
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
110 Siemens · 2012
Series 3NE4 1. .
Size: 0
Operational class: gR or aR
Rated voltage: 1000 V AC
Rated current: 32 ... 160 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
p 2 101
10-3
246
10-2
6 4 102 82 6 4 103 8 24
246
10-1
246
100 246
101 246
102 246
103 246
104 6 8 104
Prospective short-circuit current
102 2 6 4 10 8
10
2462463 p [A]
104
102 3 2 6 4 10 8 4 2 6 4 10 8 5 2 4
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
0 200 400 600
1
800 1000
w
0.8
0.6
0.4
0.2
Recovery voltage
0 200 400 600 800 1000 1200
500
1000
1500
2000
2500
0 w Recovery voltage
© Siemens AG 2012
vs
I2_10855
Virtual pre-arcing time
[A] c
I2_10858
Let-through current
A
I2_10856
Correction factor
s
I2_10857
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
111 Siemens · 2012
Series 3NE4 3. .-0B, 3NE4 337
Size: 2
Operational class: aR
Rated voltage: 800 V AC
Rated current: 250 ... 710 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
p 2 102
10-3
246
10-2
6 4 103 82 6 4 104 8 24
246
10-1
246
100 246
101 246
102 246
103 246
104 6 8 105
Prospective short-circuit current
p
103 2 6 4 104 8
10
246
1043 2 6 4 105 8 2 246
105
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
0 100 200 300 400 500 600
1
700 800
w Recovery voltage
0.2
0.4
0.6
0.8
0 200
w
2000
1800
1000
800
400
200
400 600 800
600
1200
1400
1600
1000
0
Recovery voltage
© Siemens AG 2012
vs
I2_10851
Virtual pre-arcing time
c
I2_10854
Let-through current
A
I2_10852
Correction factor
s
I2_10853
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
112 Siemens · 2012
Series 3NE4 3. .-6B, 3NE4 337-6
Operational class: aR
Rated voltage: 800 V AC
Rated current: 250 ... 710 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
p 2 102
10-3
246
10-2
6 4 103 82 6 4 104 8 24
246
10-1
246
100 246
101 246
102 246
103 246
104 6 8 105
[A] Prospective short-circuit current
p [A]
103
10
2462464
105
103
105 2 4 104 2 6 4 8 2 6 4 8
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
0 100 200 300 400 500 600
1
700 800
w Recovery voltage
0.2
0.4
0.6
0.8
0 200 400 600 800 1000 1200
400
1200
1600
2000
0 w
200
600
800
1000
1400
1800
Recovery voltage
© Siemens AG 2012
vs
I2_11445
[s] Virtual pre-arcing time
[A] c
I2_11446
Let-through current
A
I2_11447
Correction factor
s
I2_11448
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
113 Siemens · 2012
Series 3NE5 4. .
Size: 3
Operational class: aR
Rated voltage: 1500 V AC
Rated current: 160 ... 450 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
p 2 102
10-3
246
10-2
6 4 103 82 6 4 104 8 24
246
10-1
246
100 246
101 246
102 246
103 246
104 6 8 105
Prospective short-circuit current
p
103 2 6 4 104 2 64 8 105 2 8 246
1043 24
10
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
0 500
1
1500 1000
w
0,2
0,4
0,6
0,8
0.2
0.4
0.6
0.8
Recovery voltage
0 400 800 1200 1600 2000
800
2400
4000
0 w
400
1200
2000
2800
3200
3600
1600
Recovery voltage
© Siemens AG 2012
vs
I2_10872
Virtual pre-arcing time
I2_10875
Let-through current c AI2_10873 Correction factor s
I2_10874
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
114 Siemens · 2012
Series 3NE5 6. .
Size: 3
Operational class: aR
Rated voltage: 1500 V AC
Rated current: 250 ... 600 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
p 2 102
10-3
246
10-2
6 4 103 82 6 4 104 8 24
246
10-1
246
100 246
101 246
102 246
103 246
104 6 8 105
Prospective short-circuit current
p
103 2 6 4 104 2 64 8 105 2 8
10
246
1043 24
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
0 500
1
1500 1000
w
0,2
0,4
0,6
0,8
0.2
0.4
0.6
0.8
Recovery voltage
0 400 800 1200 1600 2000
800
2400
4000
0 w
400
1200
2000
2800
3200
3600
1600
Recovery voltage
© Siemens AG 2012
vs
I2_10876
Virtual pre-arcing time
I2_10877
c Let-through current
A
I2_10873
Correction factor
s
I2_10874
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
115 Siemens · 2012
Series 3NE6 4. ., 3NE9 4. .
Operational class: aR, gR
Rated voltage: 600 V AC (850 A, 1250 A),
900 V AC (710 A, 900 A)
Rated current: 710 ... 1250 A
Time/current characteristics diagrams
p 2 102
10-3
246
10-2
6 4 103 82 6 4 104 8 24
246
10-1
246
100 246
101 246
102 246
103 246
104 6 8 105
[A] Prospective short-circuit current p 2 102
10-3
246
10-2
6 4 103 82 6 4 104 8 24
246
10-1
246
100 246
101 246
102 246
103 246
104 6 8 105
[A] Prospective short-circuit current
© Siemens AG 2012
vs
I2_11436
[s] Virtual pre-arcing time
vs
I2_11437
[s] Virtual pre-arcing time
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
116 Siemens · 2012
Series 3NE6 4. ., 3NE9 4. .
Operational class: aR, gR
Rated voltage: 600 V AC (850 A, 1250 A),
900 V AC (710 A, 900 A)
Rated current: 710 ... 1250 A
Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
p [A]
103
10
2462464
105
103
105 2 4 104 2 6 4 8 2 6 4 8
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
0 200 400 600
1
800 1000
w [V]
0.8
0.6
0.4
0.2
Recovery voltage
0 200 400 600 800 1000 1200
400
1200
1600
2000
0 w
200
600
800
1000
1400
1800
Recovery voltage
© Siemens AG 2012
[A] c
I2_11438
Let-through current A
I2_11439
Correction factor
I2_11440
s Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
117 Siemens · 2012
Series 3NE7 4. ., 3NE7 6. .
Size: 3
Operational class: aR
Rated voltage: 2000 V AC
Rated current: 200 ... 710 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
p 2 102
10-3
246
10-2
6 4 103 82 6 4 104 8 24
246
10-1
246
100 246
101 246
102 246
103 246
104 6 8 105
Prospective short-circuit current
p
103 2 6 4 104 8
10
246
1043 2 6 4 105 8 2 246
105
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
0 500
1
1500 1000
w
2000
0.2
0.4
0.6
0.8
Recovery voltage
0 400 800 1200 1600 2000 2400
800
2400
4000
0 w
400
2000
2800
3200
3600
1200
1600
Recovery voltage
© Siemens AG 2012
vs
I2_10878
Virtual pre-arcing time
c
I2_10881
Let-through current
A
I2_10879
Correction factor
s
I2_10880
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
118 Siemens · 2012
Series 3NE8 0. .-1
Size: 00
Operational class: gR or aR
Rated voltage: 690 V AC
Rated current: 25 ... 160 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
p 2 101
10-3
246
10-2
6 4 102 82 6 4 103 8 24
246
10-1
246
100 246
101 246
102 246
103 246
104 6 8 104
Prospective short-circuit current
102 2 6 4 10 8
10
2462463 p [A]
104
102 3 2 6 4 10 8 4 2 6 4 10 8 5 2 4
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
0 100 200 300 400 500 600
1
700 800
w Recovery voltage
0.2
0.4
0.6
0.8
0 200
w
2000
1800
1000
800
400
200
400 600 800
600
1200
1400
1600
0
Recovery voltage
© Siemens AG 2012
vs
I2_10847
Virtual pre-arcing time
[A] c
I2_10850
Let-through current
A
I2_10848
Correction factor
s
I2_10849
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
119 Siemens · 2012
Series 3NE8 70.-1, 3NE8 71.-1
Size: 000
Operational class: gR or aR
Rated voltage: 690 V AC/700 V DC
Rated current: 20 ... 63 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
2 101
10-3
246
10-2
6 4 102 82 6 4 8 103 246
10-1
246
100 246
101 246
102 246
103 246
104 p Prospective short-circuit current
102 2 6 4 10 8
10
2462463 p [A]
104
102 3 2 6 4 10 8 4 2 6 4 10 8 5 2 4
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
0 100 200 300 400 500 600
1
700 800
w
0.2
0.4
0.6
0.8
Recovery voltage
200 400 500 600 700 800 100
w
300
1400
1200
1000
800
600
400
200
00
Recovery voltage
© Siemens AG 2012 I2_10813
vs Virtual pre-arcing time
[A] c
I2_10816
Let-through current
A
I2_10814
Correction factor
s
I2_10815
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
120 Siemens · 2012
Series 3NE8 72.-1, 3NE8 731-1
Size: 000
Operational class: aR
Rated voltage: 690 V AC/700 V DC according to UL
Rated current: 80 ... 315 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
2 101
10-3
246
10-2
6 4 102 82 6 4 103 8 24
246
10-1
246
100 246
101 246
102 246
103 246
104 6 8 104 p Prospective short-circuit current
10
2462464
105
103 6
102 2 6 4 10 8 3 2 6 4 10 8 4 2 6 4 10 8 5 2 4 p [A] Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
0 100 200 300 400 500 600
1
700 800
w
0,2
0,4
0,6
0,8
Recovery voltage
200 400 500 600 700 800 100
w
300
1400
1200
1000
800
600
400
200
0 0
Recovery voltage
© Siemens AG 2012 I2_10817
vs Virtual pre-arcing time
[A] c
I2_10820
Let-through current
A
I2_10818
Correction factor
s
I2_10819
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
LV HRC design, 3NC, 3NE
121 Siemens · 2012
Series 3NE9 63.
Size: 3
Operational class: aR
Rated voltage: 2500 V AC
Rated current: 400 ... 630 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
p 2 102
10-3
246
10-2
6 4 103 82 6 4 104 8 24
246
10-1
246
100 246
101 246
102 246
103 246
104 6 8 105
Prospective short-circuit current
p
103 2 6 4 104 8
10
246
1043 2 6 4 105 8 2 246
105
Prospective short-circuit current
Unlimited peak values:
DC component 50 %
DC component 0 %
U 0 400 800 1200 1600 2000 2400
1
2800
w [V] Recovery voltage
0.2
0.4
0.6
0.8
U
0 500 1000 1500 2000 2500 3000
6000
0 w [V]
2000
1000
3000
4000
5000
Recovery voltage
© Siemens AG 2012
vs
I2_10882
Virtual pre-arcing time
c
I2_10885
Let-through current
A
I2_10883
Correction factor
[V] Û s
I2_10884
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
Cylindrical fuse design, 3NC1, 3NC2
122 Siemens · 2012
■ Overview
SITOR cylindrical fuses protect power semiconductors from the
effects of short circuits because the super quick disconnect
characteristic is far quicker than that of conventional fuses. They
protect expensive devices and system components such as
semiconductor contactors, electronic relays (solid state), converters with fuses in the input and in the DC link, UPS systems
and soft starters for motors up to 100 A.
The cylindrical design is approved for industrial applications.
The cylindrical fuse links comply with IEC 60269.
Cylindrical fuse holders also comply with IEC 60269 and
UL 512. The cylindrical fuse holders for 10 x 38 mm and
14 x 51 mm have been tested and approved as fuse switch
disconnectors and the cylindrical fuse holders for 22 x 58 mm as
fuse disconnectors according to the switching device standard
IEC 60947-3. The utilization category and the tested current and
voltage values are specified in the Table "Technical Specifications".
The cylindrical fuse holders have been specially developed for
the application of SITOR fuse links with regard to heat tolerance
and heat dissipation and are therefore not recommended for
standard applications.
Cylindrical fuse bases do not offer the same comprehensive
touch protection as the fuse holders, but have better heat dissipation. The single-pole cylindrical fuse bases for 14 x 51 mm
and 22 x 58 mm allow modular expansion to multipole bases.
■Technical specifications
Cylindrical fuse links
3NC1 0 3NC1 4 3NC2 2
Sizes mm × mm 10 × 38 14 × 51 22 × 58
Standards IEC 60269-4; UL 248-13; CSA C22.2 No. 248.13
Approvals UL 248-13; UL File No. E167357; CSA C22.2 No. 248.13
Fuse holders, fuse bases
3NC1, 3NC2
Standards IEC 60269-2; EN 60947-3;UL 512; CSA C22.2 No. 39-M
Approvals UL 512; UL File No. E220063; CSA C22.2 No. 39-M
Rated voltage V AC 690
Rated current In A 32 50 100
Max. power dissipation of fuse links
(conductor cross-section used)
W 3 (6 mm2)
4.3 (10 mm2)
5 (10 mm2)
6.5 (25 mm2)
9.5 (35 mm2)
11 (50 mm2)
Feeder terminals mm2 1.5 ... 25 1.5 ... 35 4 ... 50
Conductor cross-sections
• Solid and stranded mm2 1.5 ... 25 1.5 ... 35 4 ... 50
• AWG cables, solid and stranded AWG 18 ... 4 14 ... 2 10 ... 1/0
Utilization category Acc. to IEC 60947-3 22B/32 A/400 V AC
22B/10 A/690 V AC
22B/50 A/400 V AC
22B/20 A/690 V AC
20B/690 V AC
Rated conditional short-circuit current
• At 400 V kA 50 (32 A gG) 100 (50 A gG) 100 (100 A gG)
80 (80 A gG)
© Siemens AG 2012
Fuse Systems
SITOR Semiconductor Fuses
Cylindrical fuse design, 3NC1, 3NC2
123 Siemens · 2012
Load rating of SITOR cylindrical fuses
Load rating of SITOR cylindrical fuses without strikers
in fuse holders - can be used as fuse switch disconnectors 1)
Cylinder Operational
class
(IEC 60269)
Rated
voltage Un
Rated
voltage Un
Rated
current In
Melting I2t
value I2ts
(tvs = 1 ms)
Breaking I2t
value
I2ta at Un
Temperature
rise at In
body center
Power
dissipation
at In
Weight
approx.
V AC V DC A A2s A2s K W kg
3NC1 003 aR 600 400 3 3 8 30 1.2 0.01
3NC1 006 aR 600 400 6 4 20 30 1.5 0.01
3NC1 008 aR 600 400 8 6 30 25 2 0.01
3NC1 010 aR 600 400 10 9 60 40 2.5 0.01
3NC1 012 aR 600 400 12 15 110 50 3 0.01
3NC1 016 aR 600 400 16 25 150 60 3.5 0.01
3NC1 020 aR 600 400 20 34 200 80 4.8 0.01
3NC1 025 aR 600 400 25 60 250 90 6 0.01
3NC1 032 aR 600 400 32 95 500 110 7.5 0.01
3NC1 401 aR 660 700 1 1.2 90 5 0.02
3NC1 402 aR 660 700 2 10 30 3 0.02
3NC1 403 aR 660 700 3 15 40 2.5 0.02
3NC1 404 aR 660 700 4 25 50 3 0.02
3NC1 405 aR 690 700 5 1.6 9 20 1.5 0.02
3NC1 406 aR 690 700 6 12 30 1.5 0.02
3NC1 410 aR 690 700 10 3.6 20 50 4 0.02
3NC1 410-5 aR 690 700 10 3.6 90 50 4 0.02
3NC1 415 aR 690 700 15 10 75 60 5.5 0.02
3NC1 415-5 aR 690 700 15 9 100 60 5.5 0.02
3NC1 420 aR 690 700 20 26 120 70 6 0.02
3NC1 420-5 aR 690 700 20 26 500 70 6 0.02
3NC1 425 aR 690 700 25 44 250 80 7 0.02
3NC1 425-5 aR 690 700 25 47 400 80 7 0.02
3NC1 430 aR 690 700 30 58 300 80 9 0.02
3NC1 430-5 aR 690 700 30 58 500 80 9 0.02
3NC1 432 aR 690 700 32 95 700 80 7.6 0.02
3NC1 432-5 aR 690 700 32 68 600 80 7.6 0.02
3NC1 440 aR 690 700 40 110 900 100 8 0.02
3NC1 440-5 aR 690 700 40 84 900 100 8 0.02
3NC1 450 aR 690 700 50 220 1800 110 9 0.02
3NC1 450-5 aR 690 700 50 200 2000 110 9 0.02
3NC2 200 aR 600 700 100 1250 8000 110 16 0.06
3NC2 200-5 aR 600 700 100 1100 8500 110 16 0.06
3NC2 220 aR 690 700 20 34 220 40 4.6 0.06
3NC2 220-5 aR 690 700 20 19 240 40 5 0.06
3NC2 225 aR 690 700 25 50 300 50 5.6 0.06
3NC2 225-5 aR 690 700 25 34 350 50 6 0.06
3NC2 232 aR 690 700 32 80 450 65 7 0.06
3NC2 232-5 aR 690 700 32 54 500 65 8 0.06
3NC2 240 aR 690 700 40 100 700 80 8.5 0.06
3NC2 240-5 aR 690 700 40 68 800 80 9 0.06
3NC2 250 aR 690 700 50 185 1350 90 9.5 0.06
3NC2 250-5 aR 690 700 50 135 1500 90 9.5 0.06
3NC2 263 aR 690 700 63 310 2600 100 11 0.06
3NC2 263-5 aR 690 700 63 280 3000 100 11 0.06
3NC2 280 aR 690 700 80 620 5500 110 13.5 0.06
3NC2 280-5 aR 690 700 80 600 6000 110 13.5 0.06
For SITOR
fuse links
Rated
voltage
Rated
current
Required
conductor
crosssection
Cylindrical fuse bases Fuse holders – can be used as fuse switch
disconnectors1)
1-pole 2-pole 3-pole 1-pole 2-pole 3-pole
In Cu Type Imax Type Imax Type Imax Type Imax Type Imax Type Imax
2) 2) 2) 2) 2) 2)
V AC A mm2 A A A A A A
Size 10 x 38
3NC1 003 600 3 1 3NC1 038-1 3 3NC1038-2/
2 ×
3NC1 038-1
3 3NC1 038-3/
3 ×
3NC1 038-1
3 3NC1 091 3 3NC1 092/
2 ×
3NC1 091
3 3NC1 093/
3 ×
3NC1 091
3
3NC1 006 6 1 6 6 6 6 6 6
3NC1 008 8 1 8 8 8 8 8 8
3NC1 010 10 1.5 10 10 10 10 10 10
3NC1 012 12 1.5 12 12 12 12 12 12
3NC1 016 16 2.5 16 16 16 16 16 16
3NC1 020 20 2.5 20 20 20 20 20 20
3NC1 025 25 4 25 23 21 25 24 22
3NC1 032 32 6 32 30 28 32 30 28
© Siemens AG 2012
Fuse Systems
SITOR Semiconductor Fuses
Cylindrical fuse design, 3NC1, 3NC2
124 Siemens · 2012
Fuse tongs: 3NC1 000.
1) Fuse holders according to IEC 60269-3, UL 512
Fuse switch disconnectors (10 × 38, 14 × 51) acc. to IEC 60947-3
Fuse disconnectors (22 × 58) according to IEC 60947-3.
2) The values Imax apply for "stand-alone operation". If several devices are
butt-mounted and/or subject to unfavorable cooling conditions, these values may be reduced still further. With a larger conductor cross-section,
values higher than Imax are possible.
Load rating of SITOR cylindrical fuses without strikers in
fuse holders - can be used as fuse switch disconnectors 1)
1) Fuse holders according to IEC 60269-3, UL 512
Fuse switch disconnectors (10 × 38, 14 × 51) acc. to IEC 60947-3
Fuse disconnectors (22 × 58) according to IEC 60947-3.
The values Imax apply for "stand-alone operation". If several
devices are butt-mounted and/or subject to unfavorable cooling
conditions, these values may be reduced still further.
With a larger conductor cross-section, values higher than Imax
are possible.
For SITOR
fuse links
Rated
voltage
Rated
current
Required
conductor
crosssection
Cylindrical fuse bases Fuse holders – can be used as fuse switch
disconnectors1)
1-pole 2-pole 3-pole 1-pole 2-pole 3-pole
In Cu Type Imax Type Imax Type Imax Type Imax Type Imax Type Imax
2) 2) 2) 2) 2) 2)
V AC A mm2 A A A A A A
Size 14 x 51
3NC1 401 660 1 1 3NC1 451-1 1 – – 3NC1 491 1 3NC1 492/
2 ×
3NC1 491
1 3NC1 493/
3 ×
3NC1 491
1
3NC1 402 2 1 2 2 2 2
3NC1 403 3 1 3 3 3 3
3NC1 404 4 1 4 4 4 4
3NC1 405 690 5 1 5 5 5 5
3NC1 406 6 1 6 6 6 6
3NC1 410 10 1.5 10 10 10 10
3NC1 415 15 1.5 15 15 15 15
3NC1 420 20 2.5 20 20 20 20
3NC1 425 25 4 25 25 24 22
3NC1 430 30 6 30 28 27 25
3NC1 432 32 6 32 32 32 32
3NC1 440 40 10 40 40 39 38
3NC1 450 50 10 50 48 46 44
Size 22 x 58
3NC2 220 690 20 2.5 3NC2 258-1 20 – – 3NC2 291 20 3NC2 292/
2 ×
3NC2 291
20 3NC2 293/
3 ×
3NC2 291
20
3NC2 225 25 4 25 25 25 25
3NC2 232 32 6 32 32 32 32
3NC2 240 40 10 40 40 39 38
3NC2 250 50 10 50 50 48 44
3NC2 263 63 16 63 60 58 56
3NC2 280 80 25 80 74 71 69
3NC2 200 600 100 35 100 95 90 85
For SITOR
fuse links
Rated voltage Rated current Required
conductor
cross-section
Fuse holders - can be used as fuse switch disconnectors1)
1-pole 2-pole 3-pole
In Cu Type Imax2) Type Imax2) Type Imax2)
V AC A mm2 A A A
Size 14 x 51
3NC1 410-5 690 10 1.5 3NC1 491 10 3NC1 492/
2 × 3NC1 491-5
10 3NC1 493/
3 × 3NC1 491-5
10
3NC1 415-5 15 1.5 15 15 15
3NC1 420-5 20 2.5 20 20 20
3NC1 425-5 25 4 25 25 25
3NC1 430-5 30 6 30 30 30
3NC1 432-5 32 6 32 32 31
3NC1 440-5 40 10 38 35 34
3NC1 450-5 50 10 48 46 44
Size 22 x 58
3NC2 220-5 690 20 2.5 3NC2 291 20 3NC2 292/
2 × 3NC2 291-5
20 3NC2 293/
3 × 3NC2 291-5
20
3NC2 225-5 25 4 25 25 25
3NC2 232-5 32 6 32 31 30
3NC2 240-5 40 10 40 39 37
3NC2 250-5 50 10 45 43 42
3NC2 263-5 63 16 59 55 52
3NC2 280-5 80 25 71 69 68
3NC2 200-5 600 100 35 94 90 85
© Siemens AG 2012
Fuse Systems
SITOR Semiconductor Fuses
Cylindrical fuse design, 3NC1, 3NC2
125 Siemens · 2012
■Dimensional drawings
Cylindrical fuse links
Cylindrical fuse holders
3NC1 0. . 3NC1 4. . 3NC2 2. .
38
I2_11377
9,5 10
I2_11379
51 16
I2_11380
58
3NC1 09.
3NC1 49.
3NC1 29.
37 7
49
58
54 36 18
49
43
69
7 27 54 81
70
43 7 36 72 108
© Siemens AG 2012
Ø10,2
14,3
Ø 22,2
I2_11382a
45
81
I2_11383a
92
96
45
112
118
45
I2_11384a
Fuse Systems
SITOR Semiconductor Fuses
Cylindrical fuse design, 3NC1, 3NC2
126 Siemens · 2012
Cylindrical fuse holders with signaling switch
Cylindrical fuse bases
3NC1 491-5 3NC1 291-5
43
49
69
24
27
43
70
24
36
3NC1 038-1 to 3NC1 038-3
3NC1 451-1
3NC2 258-1
60,5
20 20 20
41
21,5 26
50,5
50 24
© Siemens AG 2012
45
28
92
96
122
I2_12844
45
28
112
118
143
I2_12845
76
I2_11385a
I2_11386a
103,5
90
88
Fuse Systems
SITOR Semiconductor Fuses
Cylindrical fuse design, 3NC1, 3NC2
127 Siemens · 2012
■Characteristic curves
Series 3NC1 0
Size: 10 mm × 38 mm
Operational class: aR
Rated voltage: 600 V AC/400 V DC
Rated current: 3 ... 32 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
10
-3
10
-2
2
4
6
10
-1
2
4
6
10
0
2
4
6
10
1
2
4
6
10
2
2
4
6
10
3
2
4
6
6
10
4
2
4
2 4 6
p
10
3 2 4 6 10
2 2 4 6 10
1 10
0
3 A
6 A
8 A
10 A
12 A
16 A
20 A
25 A
32 A
Prospective short-circuit current
10 1
10 1
10 2
10 3 10 2 10 4 10 5 246
10 3 246
10 4 246
2 4 6 2 46 2 46 2 46
p
32 A
25 A
20 A
16 A
12 A
10 A
8 A
6 A
3 A
Prospective short-circuit current
0
0
100 200 300 400 500 600 700 800
1
0,2
0,4
0,6
0,8
Recovery voltage
400
800
1200
1600
800 200 0
0
400 600
Recovery voltage
© Siemens AG 2012 I2_11453
[s] tVS Virtual pre-arcing time
I201_11454
C Peak let-through current
I2_11455
Correction factor
I2_11456
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
Cylindrical fuse design, 3NC1, 3NC2
128 Siemens · 2012
Series 3NC1 4
Size: 14 mm × 51 mm
Operational class: aR
Rated voltage: 660 V AC/700 V DC (1 ... 4 A);
690 V AC/700 V DC (5 ... 10 A)
Rated current: 1 ... 10 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
10-3
10-2
246
10-1
246
100 246
101 246
102 246
103 2466
104 24
2 46
p
103 2 46 102 2 46 101 100
1 A
2 A
3 A
4 A
5 A
6 A
10 A
Prospective short-circuit current
101
101
102
103 102 104 105 246
103 246
104 246
2 4 6 2 4 6 2 46 2 46
10 A
5 A
Prospective short-circuit current
0
0
100 200 300 400 500 600 700 800
1
0,2
0,4
0,6
0,8 660 V
690 V
Recovery voltage
400
800
1200
1600
800 200 0
0
400 600
Recovery voltage
© Siemens AG 2012
[s] tVS
I201_11459
Virtual pre-arcing time
I201_11460
Peak let-through current
I2_11461
Correction factor
I2_11462
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
Cylindrical fuse design, 3NC1, 3NC2
129 Siemens · 2012
Series 3NC1 4
Size: 14 mm × 51 mm
Operational class: aR
Rated voltage: 690 V AC/700 V DC
Rated current: 15 ... 50 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
10
-3
10
-2
2
4
6
10
-1
2
4
6
10
0
2
4
6
10
1
2
4
6
10
2
2
4
6
10
3
2
4
6
6
10
4
2
4
2 4 6
p
10
3 2 4 6 10
2 2 4 6 10
1 10
0
15 A
20 A
25 A
30 A
32 A
40 A
50 A
Prospective short-circuit current
101
101
102
103 102 104 105 246
103 246
104 246
2 4 6 2 4 6 2 46 2 46
p
50 A
40 A
32 A
30 A
25 A
20 A
15 A
Prospective short-circuit current
0
0
0,2
0,4
0,6
0,8
100 200 300 400 500 600 700 800
1
Recovery voltage
400
800
1200
1600
800 200 0
0
400 600
Recovery voltage
© Siemens AG 2012
[s] tVS
I2_11463
Virtual pre-arcing time
I201_11464
C Peak let-through current
I2_11465
Correction factor
I2_11462
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
Cylindrical fuse design, 3NC1, 3NC2
130 Siemens · 2012
Series 3NC1 4. .-5 with striking pin
Size: 14 mm × 51 mm
Operational class: aR
Rated voltage: 690 V AC/700 V DC
Rated current: 10 ... 50 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
Prospective short-circuit current
10
-3
10
-2
2
4
6
10
-1
2
4
6
10
0
2
4
6
10
1
2
4
6
10
2
2
4
6
10
3
2
4
6
6
10
4
2
4
2 4 6
p
10
3 2 4 6 10
2 2 4 6 10
1 10
0
10 A
15 A
20 A
25 A
30 A
32 A
40 A
50 A
Prospective short-circuit current
10
1
10
1
10
2
10
3 10
2 10
4 10
5
2
4
6
10
3
2
4
6
10
4
2
4
6
2 4 6 2 4 6 2 4 6 2 4 6
p
50 A
40 A
32 A
30 A
25 A
20 A
15 A
10 A
Recovery voltage
0
0
100 200 300 400 500 600 700 800
1
0,2
0,4
0,6
0,8
Recovery voltage
400
600
200
800
1200
1000
1400
800 200 0 0
400 600
© Siemens AG 2012
Virtual pre-arcing time [s] tVS
I2_13410
Let-through current
I2_13411
C
Correction factor
I2_13412
Peak arc voltage
I2_13413
Fuse Systems
SITOR Semiconductor Fuses
Cylindrical fuse design, 3NC1, 3NC2
131 Siemens · 2012
Series 3NC2 2
Size: 22 mm × 58 mm
Operational class: aR
Rated voltage: 690 V AC/700 V DC (20 ... 80 A);
600 V AC/700 V DC (100 A)
Rated current: 20 ... 100 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
10-3
10-2
246
10-1
246
100 246
101 246
102 246
103 2466
104 24
2 46
p
104 2 46 103 2 46 102 101
20 A
25 A
32 A
40 A
50 A
63 A
80 A
100 A
Prospective short-circuit current
10
1
10
1
10
2
10
3 10
2 10
4 10
5
2
4
6
10
3
2
4
6
10
4
2
4
6
2 4 6 2 4 6 2 4 6 2 4 6
p
100 A
80 A
63 A
50 A
40 A
32 A
25 A
20 A
Prospective short-circuit current
0
0
100 200 300 400 500 600 700 800
1
600 V
0,2
0,4
0,6
0,8
690 V
Recovery voltage
400
600
200
800
1200
1000
1400
800 200 0
0
400 600
Recovery voltage
© Siemens AG 2012
[s] tVS
I201_11470
Virtual pre-arcing time
I2_11471
C Peak let-through current
I2_11472
Correction factor
I2_11466
Peak arc voltage
Fuse Systems
SITOR Semiconductor Fuses
Cylindrical fuse design, 3NC1, 3NC2
132 Siemens · 2012
Series 3NC2 2. .-5 with striking pin
Size: 22 mm × 58 mm
Operational class: aR
Rated voltage: 690 V AC/700 V DC (20 ... 80 A);
600 V AC/700 V DC (100 A)
Rated current: 20 ... 100 A
Time/current characteristics diagram Let-through characteristics (current limitation at 50 Hz)
Correction factor kA for breaking I2t value Peak arc voltage
Prospective short-circuit current
10
-3
10
-2
2
4
6
10
-1
2
4
6
10
0
2
4
6
10
1
2
4
6
10
2
2
4
6
10
3
2
4
6
6
10
4
2
4
2 4 6
p
10
4 2 4 6 10
3 2 4 6 10
2 10
1
20 A
25 A
32 A
40 A
50 A
63 A
80 A
100 A
Prospective short-circuit current
10
1
10
1
10
2
10
3 10
2 10
4 10
5
2
4
6
10
3
2
4
6
10
4
2
4
6
2 4 6 2 4 6 2 4 6 2 4 6
p
100 A
80 A
63 A
50 A
40 A
32 A
25 A
20 A
Recovery voltage
0,2
0,4
0,6
0,8
0
0
100 200 300 400 500 600 700 800
1
690 V
600 V
Recovery voltage
400
600
200
800
1200
1000
1400
800 200 0
0
400 600
© Siemens AG 2012
Virtual pre-arcing time [s] tVS
I2_13414
Let-through current
I2_13415
C
Correction factor
I2_13416
Peak arc voltage
I2_13417
Fuse Systems
SITOR Semiconductor Fuses
NEOZED and DIAZED design, SILIZED,
3SE1, 5SD4
133 Siemens · 2012
■ Overview
SILIZED is the brand name of the NEOZED fuses (D0 fuses) and
the DIAZED fuses (D fuses) with super quick characteristic for
semiconductor protection. The fuses are used in combination
with fuse bases, fuse screw caps and accessory parts of the
standard fuse system.
SILIZED fuses protect power semiconductors from the effects of
short circuits because the super quick disconnect characteristic
is far quicker than that of conventional fuses. They protect expensive devices and system components, such as semiconductor contactors, static relays, converters with fuses in the input
and in the DC link, UPS systems and soft starters for motors up
to 100 A.
When using fuse bases and fuse screw caps made of molded
plastic, always heed the maximum permissible power loss
values due to the high power loss (power dissipation) of the
SILIZED fuses. When using these components, the following
maximum permissible power loss applies:
• NEOZED D02: 5.5 W
• DIAZED DII: 4.5 W
• DIAZED DIII: 7.0 W
For this reason, sometimes a thermal permanent load of only
50 % is possible.
The DIAZED screw adapter DII for 25 A is used for the 30 A fuse
link.
■Technical specifications
■Dimensional drawings
SILIZED fuse links,
NEOZED design
5SE1 3
SILIZED fuse links,
DIAZED design
5SD4
Standards DIN VDE 0636-3; IEC 60269-3;
DIN VDE 0636-4; IEC 60269-4
Operational class gR
Characteristic Super quick
Rated voltage Un V AC 400 500
V DC 250 500
Rated current In A 10 ... 63 16 ... 100
Rated breaking capacity kA AC 50
kA DC 8
Mounting position Any, but preferably vertical
Non-interchangeability Using adapter sleeves Using screw adapter or adapter sleeves
Resistance to climate °C up to 45 at 95 % rel. humidity
Ambient temperature °C -5 ... +40, humidity 90 % at 20
5SE1 Size D01 D02
Rated current in A 10 ... 16 20 ... 63
Dimension d 11 15.3
Dimension h 36 36
5SD4 20, 5SD4 30, 5SD4 40, 5SD4 80 Size/thread DII/E27
Rated current in A 16 20 25 30
Dimension d 10 12 14 14
5SD4 50, 5SD4 60, 5SD4 70 Size/thread DIII/E33
Rated current in A 35 50 63
Dimension d 16 18 20
5SD5 10, 5SD5 20 Size/thread DIV/R1¼”
Rated current in A 80 100
Dimension d 5 7 h
I2_06252d
I2_06247b
49
I2_06248b
49
I2_06682a
57
© Siemens AG 2012
Ød Ød Ø22,5 Ød Ø28 Ød Ø34,5
Fuse Systems
SITOR Semiconductor Fuses
SILIZED, NEOZED and DIAZED design
134 Siemens · 2012
■Technical specifications
Type Sizes NEOZED design
In Pv Δϑ I2ts I2ta
1 ms 4 ms 230 V AC 400 V AC
A W K A2s A2s A2s A2s
5SE1 310 D01 10 6.9 64 30 30 56 73
5SE1 316 16 6.2 61 31 34 92 120
5SE1 320 D02 20 8.1 64 50 56 146 190
5SE1 325 25 8.2 63 120 120 166 215
5SE1 335 35 16.7 100 145 182 361 470
5SE1 350 50 12.0 80 460 540 1510 1960
5SE1 363 63 15.5 96 845 932 3250 4230
Type Sizes DIAZED design
In Pv Δϑ I2ts I2ta
1 ms 500 V AC
A W K A2s A2s
5SD4 20 DII 16 12.1 63 16.2 60
5SD4 30 20 12.3 69 35.8 139
5SD4 40 25 12.5 61 48.9 205
5SD4 80 30 13.4 65 85 310
5SD4 50 DIII 35 14.8 62 135 539
5SD4 60 50 18.5 66 340 1250
5SD4 70 63 28 84 530 1890
5SD5 10 DIV 80 34.3 77 980 4200
5SD5 20 100 41.5 83 1950 8450
© Siemens AG 2012
Fuse Systems
SITOR Semiconductor Fuses
SILIZED, NEOZED and DIAZED design
135 Siemens · 2012
■Characteristic curves
Series 5SE1 3. .
Sizes: D01, D02
Operational class: gR
Rated voltage: 400 V AC/250 V DC
Rated current: 10 ... 63 A
Time/current characteristics diagram Melting I2t values diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
2 101
10 -3 246
10 -2
6 4 102 8 2 6 4 8 103 246
10 -1
246
10 0 246
10 1 246
10 2 246
10 3 246
104 p [A]
10 A 16 A
20 A
25 A
32/35 A
50 A
63 A
© Siemens AG 2012
[s] vs
I201_11473a
Fuse Systems
SITOR Semiconductor Fuses
SILIZED, NEOZED and DIAZED design
136 Siemens · 2012
Series 5SD4, 5SD5
Size: DII, DIII, DIV
Operational class: gR
Characteristic: super quick
Rated voltage: 500 V AC/500 V DC
Rated current: 16 ... 100 A
Time/current characteristics diagram Melting I2t values diagram
Current limitation diagram
$ Peak short-circuit current with largest DC component
% Peak short-circuit current without DC component
© Siemens AG 2012
Fuse Systems
SITOR Semiconductor Fuses
Configuration
137 Siemens · 2012
■ Overview
Parameters
The fuse links are selected according to rated voltage, rated current, breaking I2t value I2ta and varying load factor, taking into
consideration other specified conditions. All of the following
data refer, unless otherwise specified, to the use of alternating
current from 45 Hz to 62 Hz.
Rated voltage Un
The rated voltage of a SITOR fuse link is the voltage specified as
the r.m.s. value of the AC voltage on the fuse link and in the order
and configuration data and the characteristics.
Always ensure that the rated voltage of the fuse link you select is
such that the fuse link will reliably quench the voltage driving the
short-circuit current. The driving voltage must not exceed the
value Un + 10 %. Please note that the supply voltage Uv0 of a
power converter can also be increased by 10 %. If, in the
shorted circuit, two arms of a converter connection are connected in series, and if the short-circuit current is sufficiently
high, it can be assumed that voltage sharing is uniform. It is essential to observe the instructions in "Series connection of fuse
links" on page 144.
Rectifier operation
With converter equipment that can only be used for rectifier
operation, the supply voltage Uv0 is the driving voltage.
Inverter operation
With converter equipment that can also be used for inverter
operation, shoot-throughs may occur as faults. In this case, the
driving voltage UWK in the shorted circuit is the sum of the infeed
direct voltage (e.g. the e.m.f. of the DC generator) and the
AC-line supply voltage. When rating a fuse link, this sum can be
replaced by an AC voltage whose r.m.s. value is 1.8 times that of
the AC-line supply voltage (UWK = 1.8 Uv0). The fuse links must
be rated so that they reliably quench the voltage UWK.
Rated current In, load rating
The rated current of a SITOR fuse link is the current specified in
the selection and ordering data, in the characteristic curves and
on the fuse link current as the r.m.s. value of an alternating current for the frequency range 45 Hz and 62 Hz.
When operating fuse links with rated current, the following are
considered normal operating conditions:
• Natural air cooling with an ambient temperature of +45 °C
• Conductor cross-sections equal test cross-sections (see Test
cross-sections table), for operation in LV HRC fuse bases and
switch-disconnectors, please refer to the Selection and ordering data
• Conduction angle of a half-period 120°el
• Continuous load maximum with rated current.
For operating conditions that deviate from the above, the permissible load current In’ of the SITOR fuse link can be determined using the following formula:
In’ = ku × kq × kλ × kl
× WL × In
whereby
In Rated current of the fuse link1)
ku Correction factor for ambient temperature (page 138)
kq Correction factor for conductor cross-section (page 138)
kλ Correction factor for conduction angle (page 138)
kl Correction factor for forced-air cooling (page 138)
WL Varying load factor (page 139)
Test cross-sections
1) When using SITOR fuse links in LV HRC fuse bases according to
IEC/EN 60269-2-1 and fuse switch disconnectors and switch disconnectors with fuses, please also refer to the data in the selection and ordering
data.
Rated current Test cross-sections
In (series 3NC1 0, 3NC1 1,
3NC1 4, 3NC1 5, 3NC2 2,
3NE1 ..., 3NE8 0.., 3NE4) 1)
(all other series)
A Cu mm2 Cu mm2
10 1.0 --
16 1.5 --
20 2.5 45
25 4 45
35 6 45
40 10 45
50 10 45
63 16 45
80 25 45
100 35 60
125 50 80
160 70 100
200 95 125
224 -- 150
250 120 185
315 2 × 70 240
350 2 × 95 260
400 2 × 95 320
450 2 × 120 320
500 2 × 120 400
560 2 × 150 400
630 2 × 185 480
710 2 × (40 × 5) 560
800 2 × (50 × 5) 560
900 2 × (80 × 4) 720
1000 -- 720
1100 -- 880
1250 -- 960
1400 -- 1080
1600 -- 1200
© Siemens AG 2012
Fuse Systems
SITOR Semiconductor Fuses
Configuration
138 Siemens · 2012
Correction factor for ambient temperature ku
The influence of the ambient temperature on the permissible
load of the SITOR fuse links is taken into account using the
correction factor ku as shown in the following graph.
Correction factor for conductor cross-section kq
The rated current of the SITOR fuse links applies to operation
with conductor cross-sections that correspond to the respective
test cross-section (see the table on page 137).
In the case of reduced conductor cross-sections, the correction
factor kq, must be used as shown in the following graph.
a = Reduction of cross-section of one connection
b = Reduction of cross-section of both connections
Correction factor for conduction angle kλ
The rated current of the SITOR fuse links is based on a sinusoidal alternating current (45 Hz and 62 Hz). However, in converter
operation, the arm fuses are loaded with an intermittent current,
whereby the conduction angle is generally 180°el or 120°el. With
this load current wave form, the fuse link can still carry the full
rated current. In the case of smaller conduction angles, the current must be reduced in accordance with the following graph.
Correction factor for forced-air cooling kl
In the case of increased air cooling, the current carrying
capacity of the fuse link increases with the air speed, air speeds
> 5 m/s do not effect any significant further increase of current
carrying capacity.
Ambient temperature
Connection cross-section
(as a % of the test cross-section)
Valve conducting period
Air velocity
© Siemens AG 2012
u Correction factor Correction factor
Correction factor
Correction factor
Fuse Systems
SITOR Semiconductor Fuses
Configuration
139 Siemens · 2012
Varying load factor WL
The varying load factor WL is a reduction factor by which the
non-aging current carrying capacity of the fuse links can be determined for any load cycles. Due to their design, the SITOR fuse
links have different varying load factors. In the characteristic
curves of the fuse links, the respective varying load factor WL for
>10000 load changes (1 hour "ON", 1 hour "OFF") is specified for
the expected operating time of the fuse links. In the event of a
lower number of load changes during the expected operating
time, it may be possible to use a fuse link with a smaller varying
load factor WL as shown in the following graph.
In the case of uniform loads (no load cycles and no shutdowns),
the varying load factor can be taken as WL = 1. For load cycles
and shutdowns that last longer than 5 min. and are more frequent than once a week, you need to select the varying load
factor WL specified in the characteristic curves of the individual
fuse links.
Waveform of the varying load factor WL for load cycles
Fuse currents for operation in power converter
The r.m.s. value of the fuse current can be calculated for the
most common converter connections from the (smoothed) direct
current Id or the conductor current IL according to the following
table.
101 2 5 102 2 5 103 2 5 104 2 5 105
Permissible number of load cycles
0.6
0.7
0.8
1.1
0.9
1.0 1.0
0.95
0.9
0.85
0.8
Converter connection R.m.s. value of the conductor
current
(phase fuse)
R.m.s. value of the branch-circuit
current
(arm fuse)
One-pulse center tap connection (M1) 1.57 Id --
Double-pulse center tap connection (M2) 0.71 Id --
Three-pulse center tap connection (M3) 0.58 Id --
Six-pulse center tap connection (M6) 0.41 Id --
Double three-pulse center tap connection (parallel) (M3.2) 0.29 Id --
Two-pulse bridge circuit (B2) 1.0 Id 0.71 Id
Six-pulse bridge circuit (B6) 0.82 Id 0.58 Id
Single-phase bidirectional connection (W1) 1.0 IL 0.71 IL
© Siemens AG 2012
/ n LA
Fuse Systems
SITOR Semiconductor Fuses
Configuration
140 Siemens · 2012
I2t values
In the event of a short circuit, the current of the fuse link increases during melting time ts up to let-through current Ic
(melting current peak).
During the arc quenching time tL, the electric arc develops and
the short-circuit current is quenched (see the following graph).
Current path when switching fuse links
The integral of the current squared over the entire
operating time (ts+tL), known as the breaking I2t value, determines the heat to be fed to the semiconductor device that is to
be protected during the breaking procedure.
In order to ensure sufficient protection, the breaking I2t value of
the fuse link must be smaller than the I2t value of the semiconductor device. As the temperature increases, i.e. preloading increases, the breaking I2t value of the fuse link decreases almost
in the same way as the I
2t value of a semiconductor device, so
that it is enough to compare the I2t values in a non-loaded (cold)
state.
The breaking I2t value (I2ta) is the sum of the melting I2t value
(I2ts) and the quenching I2t value (I2tL).
(semiconductor, tvj = 25 °C,
tp = 10 ms) > (fuse link)
Melting I 2t value I 2ts
The melting value I
2t can be calculated for the value pairs of the
time/current characteristic curve of the fuse link for any periods.
As the melting time decreases, the melting value I
2t tends towards a lower limit value at which almost no heat is dissipated
from the bottleneck of the fuse element to the environment during the melting process. The melting I
2t values specified in the
selection and ordering data and in the characteristic curves correspond to the melting time tvs= 1 ms.
Quenching I2t value I2tL
While the melting I2t value is a characteristic of the fuse link, the
quenching I2t value depends on circuit data, such as
• The recovery voltage Uw
• The power factor p.f. of the shorted circuit
• The prospective current Ip (current at the installation site of the
fuse link if this is bridged)
The maximum quenching I
2t value is reached at a current of
10 x In to 30 x In depending on the fuse type.
Breaking I2t value I2ta, correction factor kA
The breaking I2t values of the fuse link are specified in the characteristic curves for the rated voltage Un. In order to determine
the breaking I2t value for recovery voltage Uw the correction
factor kA must be taken into account.
I2ta (at Uw) = I2ta (at Un) × kA
The characteristics "correction factor kA" (see the following
graph) is specified in the characteristic curves for the individual
fuse range. The thus determined breaking I2t values apply to
prospective currents Ip ≥ 10 × In and p.f. = 0.35.
Correction factor kA for breaking I 2t value
Example: Series 3NE8 0..
∫I2 td ( )
∫I2 td ( )
∫I2tA ( )
Recovery voltage
© Siemens AG 2012
Correction factor
Fuse Systems
SITOR Semiconductor Fuses
Configuration
141 Siemens · 2012
Taking into account the recovery voltage Uw
The recovery voltage Uw is derived from the voltage driving the
short-circuit current. For most faults, the driving voltage is equal
to the supply voltage Uv0, however, for shoot-throughs it is
1.8 times the value for the supply voltage Uv0 (see rated voltage,
page 137). If the shorted circuit contains two arms of a converter
connection and thus two fuse links in series, and if the shortcircuit current is sufficiently high (see series connection,
page 144) it can be assumed that there is a uniform voltage
sharing, i.e. Uw = 0.5 × Uv0 or, in the case of shoot-throughs
Uw = 0.9 × Uv0.
Influence of the power factor p.f.
The specifications in the characteristic curves for the breaking
I2t values (I2ta) refer to p.f. = 0.35 (exception: for 3NC5 8..,
3NE6 4.., 3NE9 4.. SITOR fuse links the following applies:
p.f. = 0.2).
The dependence of the breaking I2t values on the power factor
p.f. at 1.0 × Un and at 0.5 × Un is shown in the following graphic.
Breaking I 2t value I 2ta of SITOR fuse links dependent on the power
factor p.f.
at 1.0 Un
at 0.5 Un
a = for 3NC5 8.., 3NE6 4.., 3NE9 4.. SITOR fuse links
(reference to p.f. = 0.2)
b = for all other SITOR fuse links (reference to p.f. = 0.35)
0.2 0.4 0.6 0.8
Power factor p. f.
© Siemens AG 2012
Cleaning- value
at p. f. (as a % of
at p. f. = 0.35 or 0.2)
2 2 A 2 A
Fuse Systems
SITOR Semiconductor Fuses
Configuration
142 Siemens · 2012
Time/current characteristics
The solid time/current characteristic curves in the following
graph specify the time to melting for the non-loaded fuse link in
a cold state (max. +45 °C).
35 A: Operational class gR
160 A: Operational class aR
If the time/current characteristic curve in the long-time range
(tvs > 30 s) is dashed (fuse links of aR operational class), this
specifies the limit of the permissible overload in a cold state. If
the dotted part of the characteristic curve is exceeded, there is
a risk of damage to the ceramic body of the fuse link. The fuse
links can only be used for short-circuit protection. In this case,
an additional protective device (overload relay, circuit breaker)
is required to protect against overload. In the case of controlled
converter equipment, the current limiter is sufficient.
If the time/current characteristic curve is shown as a solid line
over the entire setting range (fuse links of operational class gR
or gS), the fuse link can operate in this range. This means it can
be used both for overload and short-circuit protection.
Actual melting time
The virtual melting time tvs is specified in the time/current characteristic curve, depending on the prospective current. It is a
value that applies to the current squared (di/dt) = ∞).
In the case of melting times tvs < 20 ms the virtual melting time
tvs deviates from the actual melting time ts. The actual melting
time may be several milliseconds longer (depending on the rate
of current rise).
Within a range of several milliseconds, during which the rise of
the short-circuit current can be assumed to be linear, the actual
melting time for a sinusoidal current rise and 50 Hz is as follows:
Taking into account preloading, residual value factor RW
Preloading the fuse link shortens the permissible overload duration and the melting time.
The residual value factor RW can be used to determine the time
that a fuse link can be operated during a periodic or non-periodic load cycle, above and beyond the previously determined
permissible load current In, with any overload current ILa without
aging.
The residual value factor RW is dependent on the preloading V (Ieff r.m.s. value of the fuse current during the load cycle at
permissible load current In')
and the frequency of the overloads (see the following graph,
curves a and b).
Permissible overload and melting time for previous load
a = frequent surge/load cycle currents (>1/week)
b = infrequent surge/load cycle currents (<1/week)
c = melting time for preloading
Permissible overload duration =
residual value factor RW × melting time tvs (time/current characteristic
curve)
A reduction of the melting time of a fuse link in the case of preloading can
be derived from curve c.
Melting time =
residual value factor RW × melting time tvs (time/current characteristic
curve)
ts 3xI2ts Ic2 = ---------------
V Ieff
In′ -------=
Pre-load factor
0.2 0.4 0.6 0.8
0.2
0.4
0.6
0.8
© Siemens AG 2012 Rest value factor
Fuse Systems
SITOR Semiconductor Fuses
Configuration
143 Siemens · 2012
Let-through current Ic
The let-through current Ic can be determined from the current
limiting characteristics (current limitation at 50 Hz) specified for
the respective fuse link. This depends on the prospective current
and the DC component when the short circuit occurs (instant of
closing).
The following graph shows the let-through current Ic of a fuse
link, depending on the prospective short-circuit current Ip using
the 3NE4 333-0B SITOR fuse link as an example.
Example:
3NE4 333-0B SITOR fuse link
Rated breaking capacity
The rated breaking capacity of all SITOR fuse links is at least
50 kA, unless higher values are specified in the characteristic
curves.
The data apply to a test voltage of 1.1 × Un, 45 Hz to 62 Hz and
0.1 ≤ p.f. ≤ 0.2. In the case of inception voltages that are below
the rated voltage as well as rated currents of the fuse links that
are below the maximum rated current of a fuse range, the breaking capacity is considerably higher than the rated breaking
capacity.
Peak arc voltage Ûs
During the quenching process, a peak arc voltage Ûs occurs at
the connections of the fuse link, which can significantly exceed
the supply voltage. The level of the peak arc voltage depends on
the design of the fuse link and the level of the recovery voltage.
It is presented in characteristic curves as a function of the
recovery voltage Uw (see the following graph).
Example:
3NE4 333-0B SITOR fuse link
The peak arc voltage occurs as a cutoff voltage at the semiconductor devices not in the shorted circuit. In order to prevent
voltage-related hazards, the peak arc voltage must not exceed
the peak cutoff voltage of the semiconductor devices.
Power dissipation, temperature rise
On reaching the rated current, the fuse elements of the SITOR
fuse links have a considerably higher temperature than the fuse
elements of line protection fuse links.
The power dissipation specified in the characteristic curve is the
upper variance coefficient if the fuse link is loaded with the rated
current.
In the case of partial loads, this power dissipation decreases as
shown in the following graph
The temperature rise specified in the characteristic curve
applies to the respective reference point and is determined
when testing the fuse link (test setup according to
DIN VDE 0636, Part 23 and IEC 269-4).
0 200 400 600 800 1000 1200
1000
1400
2000
w
200
400
600
800
1200
1600
1800
100
Recovery voltage
100
80
60
40
20
00 20 40 60 80 100
Load current
(as a % of rated current )
© Siemens AG 2012
Peak arc voltage s Power dissipation at partial load
(as a % of the power
dissipated at rated current)
Fuse Systems
SITOR Semiconductor Fuses
Configuration
144 Siemens · 2012
Parallel and series connection of fuse links
Parallel connection
If an arm of a converter connection has several semiconductor
devices so that the fuse links are connected in parallel, only the
fuse link connected in series to the faulty semiconductor device
is tripped in the event of an internal short circuit. It must quench
the full supply voltage.
To boost the voltage, two or more parallel fuse links can be assigned to a single semiconductor device without reducing the
current. The resulting breaking I2t value increases with the
square of the number of parallel connections. In this case, in order to prevent incorrect distribution of the current, you should
only use fuse links of the same type.
Series connection
There are two kinds of series connection available:
• Series connection in the converter arm
• Two fused converter arms through which a short-circuit
current flows in series
In both cases, uniform voltage sharing can only be assumed if
the melting time of the SITOR fuse link does not exceed the value
specified in the following table.
Cooling conditions for series-connected fuse links should be approximately the same. If faults are expected, during which the
specified melting times are exceeded (as a result of a slower
current rise), it can no longer be assumed that voltage sharing is
uniform. The voltage of the fuse links must then be rated so that
a single fuse link can quench the full supply voltage.
It is best to avoid the series connection of fuse links in a converter connection arm and instead use a single fuse link with a
suitably high rated voltage.
Use with direct current
For fuse links that are to be used in DC circuits, some data may
vary from the data specified in the characteristic curves for alternating current.
Permissible direct voltage
The permissible direct voltage Uperm of the fuse links depends
on the rated voltage Un, of the time constants τ=L/R in the
DC circuit and on the prospective current Ip. The permissible
direct voltage refers to the rated voltage Un and is specified
depending on the time constants τ, the prospective current is a
parameter (see the following graphs).
Applies to all series except 3NE1 0.., 3NE1 8..
Applies to all series except 3NE1 0.., 3NE1 8..
Breaking I2t value I2ta
The breaking I2t value I2ta depends on the voltage, on the time
constants τ=L/R and on the prospective current Ip. It is calculated from the I2ta value specified in the characteristic curve for
the respective fuse link at rated voltage Un and correction factor
kA whereby, instead of the recovery voltage Uw, the direct voltage is used against which the fuse link is to switch.
The breaking I2t value determined in this way applies under the
following conditions:
• Time constant L/R ≤ 25 ms for Ip ≥ 20 × In
• Time constant L/R ≤ 10 ms for Ip = 10 × In
• The breaking I2t values increase by 20 %
• For Ip ≥ 20 × In and time constants L/R = 60 ms
• For Ip = 10 × In and time constants L/R = 35 ms
SITOR fuse links Maximum melting time for uniform
voltage sharing
Type ms
3NC1 0. .
3NC1 4. .
3NC1 5. .
3NC2 2. .
10
3NC2 4. .
3NC5 8. .
3NC7 3..
3NC8 4..
40
10
3NE1 0..
3NE1 2..
3NE1 3..
3NE1 4..
3NE1 8..
10
20
10
3NE3 2..
3NE3 3..
3NE3 4..
3NE3 5..
3NE3 6..
10
20
3NE4 1. .
3NE4 3. .
10
3NE5 4..
3NE5 6..
20
3NE6 4.. 10
3NE7 4..
3NE7 6..
20
3NE8 0..
3NE8 7..
10
3NE9 4..
3NE9 6..
10
20
0 10 20 30 40 50 60 70 80
20 n
= 10 n
= 5 n
Time constant
1.00
0.90
0.80
0.70
0.60
0.50
0.40
= L / R
0 10 20 30 40 50 60 70 80
20 n
= 10 n
= 5 n
Time constant τ = L/R
0.90
0.80
0.70
0.60
0.50
0.40
0.30
© Siemens AG 2012
n
perm. DC voltage Uperm
rated voltage U
perm. DC vol tage U
rated voltage U (600 V)
perm
n
Fuse Systems
SITOR Semiconductor Fuses
Configuration
145 Siemens · 2012
Peak arc voltage Ûs
The peak arc voltage Ûsis determined from the curve specified
in the characteristics for the respective fuse link, whereby
instead of the recovery voltage Uw, the direct voltage is used
against which the fuse link is to switch.
The peak arc voltage determined in this way applies under the
following conditions:
• Time constants L/R ≤ 20 ms for Ip ≥ 20 In
• Time constants L/R ≤ 35 ms for Ip = 10 In.
The switching voltages increase by 20 %
• For Ip ≥ 20 In and time constants L/R = 45 ms
• For Ip = 10 In and time constants L/R = 60 ms.
Indicator
An indicator shows the switching of the fuse link. The SITOR fuse
links have an indicator whose operational voltage lies between
20 V (Un ≤ 1000 V) and 40 V (Un > 1000 V).
Accessories
Fuse bases, fuse pullers
Some of the SITOR fuse links can be inserted in matching fuse
bases. The matching fuse bases (single-pole and three-pole)
and the respective fuse pullers are listed in the technical specifications, from page 82.
Note
Even if the values of the rated voltage and/or current of the fuse
bases are lower than that of the allocated fuse link, the values of
the fuse link apply.
Fuse switch disconnectors, switch disconnectors with fuses
Some series of SITOR fuse links are suitable for operation in
3NP4 and 3NP5 fuse switch disconnectors or in 3KL and 3KM
switch disconnectors with fuses (see catalogs LV 10 and LV 30).
When using switch disconnectors, the following points must be
observed:
• Because, compared to LV HRC fuses, the power dissipation of
the SITOR fuse links is higher, the permissible load current of
the fuse links sometimes needs to be reduced, see below
(Configuration manual)
• Fuse links with rated currents In > 63 A must not be used for
overload protection even when they have gR operational
class.
Note:
By contrast, all fuse links of the 3NE1 ... series with rated currents In from 16 A to 850 A and operational classes gR and gS
can be used for overload protection.
• The rated voltage and rated isolation voltage of the switch disconnectors must at least correspond to the available voltage.
• When using fuse links of the 3NE3 2.., 3NE3 3.., 3NE4 3..,
3NC2 4.. and 3NC8 4.. series the switching capacity of the
fuse switch disconnectors must not be fully utilized due to the
slotted blade. Occasional switching of currents up to the rated
current of the fuse link is permissible
• When used in fuse switch disconnectors, fuse links of the
3NE4 1.. series may only be occasionally switched, and only
without load, as this places the fuse blade under great mechanical stress.
In the technical specifications, starting on page 82, the switch
disconnectors are allocated to their respective individual fuse
links.
© Siemens AG 2012
Fuse Systems
SITOR Semiconductor Fuses
Configuration
146 Siemens · 2012
Specifying the rated current In for non-aging operation with
varying load
Power converters are often operated not with a continuous load,
but with varying loads, that can also temporarily exceed the rated
current of the power converter.
The selection process for non-aging operation of SITOR fuse
links for four typical types of load is as follows:1)
• Continuous load
• Unknown varying load, but with known maximum current
• Varying load with known load cycle
• Occasional surge load from preloading with unknown surge
outcome
The diagrams for the correction factors ku, kq, kλ , kl
, page 138,
and the residual value factor RW, page 142, must be observed.
The varying load factor WL for the fuse links is specified on
page 139.
Specifying the required rated current In of the fuse link is carried
out in two steps:
1. Specifying the rated current In on the basis of the r.m.s. value
Ieff of the load current:
Permissible load current I In’ = ku × kq × kl × kl × WLn×
' of the selected fuse link:
In
2. Checking the permissible overload duration of current blocks
exceeding the permissible fuse load current In’.
Melting time tvs (time/current characteristic curve) × residual
value factor RW ≥ overload duration tk
To do this, you require the previous load ratio
as well as the characteristic curve "permissible overload and
melting time for previous load" (page 142, curve a) and the
"time/current characteristic curve" for the selected fuse link.
If a determined overload duration is less than the respective required overload duration, then you need to select a fuse link with
a greater rated current In (taking into account the rated voltage
Un and the permissible breaking I
2t value) and repeat the check.
Continuous load
Rated current Un of the fuse link
ILa = load current of the fuse link (r.m.s. value)
Fewer than 1 shutdown per week: WL = 1
More than 1 shutdown per week: WL = see technical specifications,
page 82 ff.
1) In the case of varying loads that cannot be assigned to one of the four
types of load shown here, please contact us.
Unknown varying load, but with known maximum current Imax
Rated current Un of the fuse link
Imax = maximum load current of the fuse link (r.m.s. value)
Varying load with known load cycle
ILK = maximum load current of the fuse link (r.m.s. value)
In Ieff
1 ku kq kλ kl WL ×××× > × --------------------------------------------------
V Ieff
In′ -------=
t 0
Load
In ILa
1 ku × kq kλ × kl WL ×× ≥ × -----------------------------------------------------
0
max
In Imax
1 ku kq kλ kl WL ×××× ≥ × −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−
'n 1 2 3 4
La1
La3
La2
RMS
Ieff
I2
Lak tk × k 1=
k n = ∑
SD
= --------------------------------------------
I
eff
I2
La1t1 I2
La2t2 I2
La3t3 + +
SD = ----------------------------------------------------------------
© Siemens AG 2012
I201_12649
Load current Load
I2_12650
Load current La
I2_12651
Load current La
Fuse Systems
SITOR Semiconductor Fuses
Configuration
147 Siemens · 2012
Occasional surge load from preloading with unknown surge
outcome
Specifying the required rated current In of the fuse link is carried
out in two steps:
1. Specifying the rated current In on the basis of the previous
load current Iprev:
Permissible load current In' of the selected fuse link:
In’ = ku × kq × kλ × kl
× WL × In
2. Checking the permissible overload duration of the surge
current Isurge
Melting time tvs (time/current characteristic curves) × residual
value factor RW ≥ surge wave duration tsurge
To do this, you require the previous load ratio
as well as the characteristic curve "permissible overload and
melting time for previous load" (page 142, curve a or b) and
the "time/current characteristic curve" for the selected fuse
link.
If a determined overload duration is less than the required overload duration tsurge, then you need to select a fuse link with a
greater rated current In (taking into account the rated voltage U
and the permissible breaking I
2t value) and repeat the check.n
Condition:
tinterval ≥ 3 x tsurge
tinterval ≥ 5 min
Sample selections
For a converter assembly in circuit (B6) A (B6) C, whose rated
direct current is Idn= 850 A, fuse links that can be installed as
arm fuses should be selected. The choice of fuse is shown for
different operating modes of the converter assembly.
Data for converter assembly
• Supply voltage
UN = 3 AC 50 Hz 400 V
• Recovery voltage
UW = 360 V = UN x 0.9 (for shoot-throughs)
• Thyristor T 508N (from eupec),
I2t value
∫ i2 dt = 320 × 10 3A2s (10 ms, cold)
• Fuse links, natural air cooling,
ambient temperature ϑu = +35 °C
• Conductor cross-section for copper fuse link: 160 mm2
• Conversion factor
direct current Id/fuse load current ILa: ILa = Id × 0.58.
For the following examples, it is assumed, in the case of loads
that exceed the rated direct current of the converter assembly,
that the converter assembly is rated for this load.
Continuous, no-break load
Direct current Id = Idn = 850 A
ILa = Id × 0.58 = 493 A
Selected:
3NE3 335 SITOR fuse link
(560 A/1000 V), WL = 1
breaking I
2t value
I 2tA = 360 × 103 × 0.53 = 191 × 103 A2s
test cross-section to page 137: 400 mm2
The following correction factors are to be applied:
ku = 1.02 (ϑu = +35 °C)
kq = 0.91 (conductor cross-section, double-ended, 40 % of test
cross-section)
kλ = 1.0 (conduction angle λ = 120°)
kl = 1.0 (no forced-air cooling)
Required rated current In of the SITOR fuse link:
Unknown varying load, but with known maximum current
Max. direct current Idmax = 750 A
Max. fuse current Imax = Idmax × 0.58 = 435 A
Selected:
3NE3 334-0B SITOR fuse link
(560 A/1000 V), WL = 1
Breaking I
2t value
I 2ta = 260 × 103 × 0.53 = 138 × 103 A2s
Test cross-section to page 137: 400 mm2
The following correction factors are to be applied:
ku = 1.02 (ϑu = +35 °C)
kq = 0.91 (conductor cross-section, double-ended, 40 % of test
cross-section)
kλ = 1.0 (conduction angle λ = 120°)
kl = 1.0 (no forced-air cooling)
Required rated current In of the SITOR fuse link:
In Ivor
1 ku kq kλ kl WL ×××× > × -----------------------------------------------------
V Ieff
In′ -------=
t ' t t 0 n
prev
interval
surge
surge
In ILa
1 ku × kq kλ × kl WL ×× × -------------------------------------------------- = 493 A ≥
493 A 1
1 02 , 0 91 × , 1 0, × 1 0, 10, ×× × ---------------------------------------------------------------------- = 531 A
In Imax
1 ku × kq kλ × kl WL ×× × -------------------------------------------------- = 493 A ≥
435 A 1
1 02 , 0 91 × , 1 0, × 1 0, 10, ×× × ---------------------------------------------------------------------- = 469 A
© Siemens AG 2012
I201_12652
Load current Load
Fuse Systems
SITOR Semiconductor Fuses
Configuration
148 Siemens · 2012
Varying load with known load cycle
Direct current:
Id1 =1200 A t1 = 20 s
Id2 = 500 A t2 = 240 s
Id3 =1000 A t3 = 10 s
Id4 = 0 A t4 = 60 s
Fuse current:
ILa1 =1200 × 0.58 = 696 A
ILa2 = 500 × 0.58 = 290 A
ILa3 =1000 × 0.58 = 580 A
R.m.s. value of load current
Selected unit:
3NE3 333 SITOR fuse link
(450 A/1000 V), WL = 1
breaking I2t value I2ta = 175 × 103 × 0.53 = 93 × 103 A2s
test cross-section to page 137: 320 mm2
The following correction factors are to be applied:
ku = 1.02 (ϑu = +35 °C)
kq = 0.94 (conductor cross-section, double-ended, 50 % of test
cross-section)
kλ = 1.0 (conduction angle λ = 120°)
kl = 1.0 (no forced-air cooling)
1. Required rated current In of the SITOR fuse link:
Permissible load current In' of the selected fuse link:
In’ = ku × kq × kλ × kl
× WL × In = 1.02 × 0.94 × 1.0 × 1.0 × 1.0
× 450 = 431 A
2. Checking the permissible overload duration of current blocks
exceeding the permissible fuse load current In’
Previous load ratio:
Residual value factor RW: For V = 0.74 of curve a
(characteristic curve page 142, frequent surge/load cycle
currents) RW = 0.2
Current block ILa1: melting time tvs: 230 s
(from time/current characteristic curve for 3NE3 333)
tvs × RW = 230 s × 0.2 = 46 s > t1
Current block ILa3: melting time tvs: 1200 s
(from time/current characteristic curve for 3NE3 333)
tvs × RW = 1200 s × 0.2 = 240 s > t3
Occasional surge load from preloading with unknown
surge outcome
Direct current:
Idprev = 700 A
Idsurge = 500 A tsurge = 8 s
Fuse current:
Iprev =Idprev × 0.58 = 406 A
Isurge =Idsurge × 0.58 = 1015 A
Conditions:
tinterval ≥ 3 tsurge and tinterval ≥ 5 min must be fulfilled.
Selected unit:
3NE3 333 SITOR fuse link
(560 A/1000 V), WL = 1
breaking I2t value I2ta = 360 × 103 × 0.53 = 191 × 103 A2s
test cross-section to page 137: 400 mm2
The following correction factors are to be applied:
ku = 1.02 (ϑu = +35 °C)
kq = 0.91 (conductor cross-section, double-ended, 40 % of test
cross-section)
kλ = 1.0 (conduction angle λ = 120°)
kl = 1.0 (no forced-air cooling)
1. Required rated current In of the SITOR fuse link:
Permissible load current In' of the selected fuse link:
In’ =ku × kq × kλ × kl
× WL × In =
1.02 × 0.91 × 1.0 × 1.0 × 1.0 × 560 = 520 A
2. Checking the permissible overload duration of the surge
current Isurge
Previous load ratio:
Residual value factor RW: For V = 0.78 of curve a
(characteristic curve page 142, frequent surge/load cycle
currents) RW = 0.18 surge current Isurge: melting time tvs:
110 S (from time/current characteristic curve for 3NE3 333)
tvs × RW = 110 s × 0.18 = 19.8 s > tsurge correction factors can
be found on pages 137 and 138.
Ieff
6962 20 2902 + × 240 5802 × 10 + ×
330 --------------------------------------------------------------------------------- 317A = =
In IEff
1 ku × kq kλ × kl WL ×× × -------------------------------------------------- = 493 A ≥
317 A 1
1 02 , 0 94 × , 1 0, × 1 0, 10, ×× × ---------------------------------------------------------------------- = 331 A
V Ieff
In′ ------- 317
431
-------- 0 74 , == =
prev
surge
surge
In Iprev
1 ku × kq kλ × kl WL ×× × -------------------------------------------------- = 493 A ≥
406 A 1
1 02 , 0 91 × , 1 0, × 1 0, 10, ×× × ---------------------------------------------------------------------- = 437 A
V Iprev
In′ ---------- 406
520
-------- 0 78 , = ==
© Siemens AG 2012
Fuse Systems
Photovoltaic Fuses
PV cylindrical fuses, 3NW7 0, 3NW6 0
149 Siemens · 2012
■ Overview
• Special requirements are placed on fuses for application in
photovoltaic systems. These fuses have a high DC rated voltage and a disconnect characteristic specially designed to
protect PV modules and their connecting cables (the newly
defined operational class gPV). Moreover, highly variable load
currents and a broad temperature range play an important
role. The requirements were incorporated into an international
standard only in recent years, now published as IEC 60269-6.
All Siemens PV fuses comply with this new standard.
• The cylindrical fuses of size 10 x 38 are used in order to protect strings.
• The LV HRC fuse systems of size 1 to 3L are used in order to
protect groups (PV sub-arrays) or as cumulative fuses before
the inverter. For the fuses of size 1 the standard 3NH fuse
bases are available. For the fuses of size 1L, 2L and 3L we
have developed a special 3NH7..-4 fuse base with a swiveling
mechanism which offers comprehensive touch protection.
Here, it is possible to change fuses in safety and without a fuse
handle.
• The cylindrical fuse holders can be supplied in single-pole
and two-pole versions with and without signal detectors. In the
case of devices with signal detector, a small electronic device
with LED is located behind an inspection window in the plugin module. If the inserted fuse link is tripped, this is indicated
by the LED flashing.
• The fuse holders, size 10 mm × 38 mm, have a sliding catch
that enables the removal of individual devices from the assembly. The infeed can be from the top or the bottom. Because the
cylindrical fuse holders are fitted with the same anti-slip terminals at the top and the bottom, the devices can also be busmounted at the top or the bottom.
• The cylindrical fuse holders and the 3NH7..-4 fuse bases comply with IEC 60269-2 and are regarded as fuse disconnectors
in the sense of the switching device standard IEC 60947.
Under no circumstances are they suitable for switching loads.
• The correct selection and dimensioning of these fuses must
take account of the specific operating conditions as well as
the data of the PV modules when calculating the voltage and
the current.
■Benefits
• Protection of the modules and their connecting cables in the
event of reverse currents
• Safe tripping in case of fault currents reduces the risk of fire
due to DC electric arcs
• Safe separation when the fuse holder / fuse base is open
PV cylindrical fuse system, 3NW7 0..-4, 3NW6 0..-4 PV fuse system NH, 3NH7 3..-4, 3NE1 3..-4D
© Siemens AG 2012
Fuse Systems
Photovoltaic Fuses
PV cylindrical fuses, 3NW7 0, 3NW6 0
150 Siemens · 2012
■Technical specifications
Cylindrical fuse links Cylindrical fuse holders
3NW6 0..-4 3NW7 0..-4
Sizes mm x mm 10 x 38 10 x 38
Standards IEC 60269-6 IEC 60269, IEC 60269-6, IEC 60947
Operational class gPV
Rated voltage Un V DC On request 1000
Rated current In A DC 4 to 16 25
Rated short-circuit strength kA -- 30
Rated breaking capacity kA DC 30
Breaking capacity
• Utilization category -- AC-20B, DC-20B (switching without load)
Max. power dissipation of the fuse link W -- 3.4
Rated impulse withstand voltage kV -- 6
Overvoltage category -- II
Pollution degree -- 2
No-voltage changing of fuse links -- Yes
Sealable when installed -- Yes
Mounting position Any, but preferably vertical Any, but preferably vertical
Current direction -- Any (signal detector with antiparallel LED)
Degree of protection acc. to IEC 60529 -- IP20, with connected conductors
Terminals are touch-protected according to BGVA3
at the incoming and outgoing feeder -- Yes
Ambient temperature °C -25 ... +55, humidity 90 % at +20
Conductor cross-sections
• Finely stranded, with end sleeve mm2 -- 0.75 ... 25
• AWG (American Wire Gauge) -- 18 ... 4
Tightening torques Nm -- 1.2
© Siemens AG 2012
Fuse Systems
Photovoltaic Fuses
PV cylindrical fuses, 3NW7 0, 3NW6 0
151 Siemens · 2012
■Characteristic curves
Time/current characteristics diagram Characteristic curves diagram Correction factor Ambient temperature
■Dimensional drawings
3NW6 00.-4
10 x 38 mm
3NW7 0. .-4
1-pole 2-pole
■Schematics
1-pole 2-pole
3 4 6 8101 2 3 4 6 8 102 2 3 4 6 8 103 2 3
10 3
10 2
10 1
100
10-1
10-2
10 434682468246824682468246824682
Prospective short-circuit current Ip [A
Correction factor; ambient temperature k
°C
0,8
0,85
0,9
0,95
1
1,05
1,1
0 10 20 30 40 50 60 70 80 90
38
I2_06703c
37 7
49
58
36 18
© Siemens AG 2012
4A
6A
8A
10A
12A
16A
I202_01366
20A
[s Virtual melting time tvs
K
I202_02187
10,3
I202_01298
45
81
[ [
Fuse Systems
Photovoltaic Fuses
PV cylindrical fuses, 3NW7 0, 3NW6 0
152 Siemens · 2012
■ More information
Selecting and dimensioning photovoltaic fuses from
Siemens
Standards:
The contents of the new standard IEC 60269-6 are currently
being drawn up.
We follow this new standard when rating and labeling our
PV fuses. Until now, some of our rivals have been relying on
products based on the standard IEC 60269-4 "Fuses for semiconductor protection". Differences between the two standards
are particularly evident for the rated voltage and the test voltage
and in the definition of the operational class.
Terms:
UOC STC (also known as VOC STC)
1)
Voltage under standard test conditions on an unloaded string
taking into account minimum ambient temperature (no-load voltage). The voltage UOC STC of a string is obtained by multiplying
the single voltages UOC STC of a PV module (UOC STC x M2)).
ISC STC
Short-circuit current of a PV module, a PV string, a PV subgenerator or a PV generator under standard test conditions
I MPP
is the largest possible working current of a string
(MPP = Maximum Power Point).
Ip max
Is the maximum occurring load current; this is usually equivalent
to IMPP. I SC MOD
Short-circuit current of a PV module under regional conditions.
Standard test conditions (STC)
Test conditions which are laid down in EN 60904-3 for
PV cells and PV modules:
• Solar radiation 1000 W/m²
• Ambient temperature 25 °C
• Air distribution (AM) 1.5
Standard test conditions are normally specified by the manufacturer of the PV module in data sheets.
Operational class
We use draft standard IEC 60269-6 as a guide when naming the
operational class gPV. Accordingly, the symbols are also on the
fuse:
It is important that the fuse have a full-range characteristic which
can cut off with certainty all possible fault currents, and especially also small fault currents3).
The test currents for PV fuses are defined in draft standard
IEC 60269-6.
Inf = 1.13 x In
(test current at which the fuse must not trip
for one hour).
If
= 1.45 x In (test current at which the fuse must trip
for one hour).
Please refer to the time/current characteristic curve diagram on
page 151.
Rated switching capacity
Under draft standard IEC 60269-6 a rated switching capacity of
at least 10 kA is required. While this is comparatively low
compared to other fuses, it is more than adequate for handling
the residual currents occurring in PV systems.
We have tested our PV fuses at 30 kA.
Dimensioning rules
PV fuses are to dimensioned according to special rules with
regard to rated voltage, rated current and operational class
(characteristic).
Dimensioning rule
The rated voltage4) of the fuse should be calibrated 20 % higher
than the open-circuit voltage UOC STC of a string. Extreme operating conditions, e. g. temperatures down to -25 °C, are thus taken into account.
Rated voltage
Our PV fuses have been tested according to draft standard
IEC 60269-6 with the rated voltage, i.e. the test voltage is the
same as the rated voltage.
Based on IEC 60269-4, some manufacturers have issued two
voltage values for their fuses, e. g. 900 V (tested 1000 V).
Rated current
1. In order to prevent unwanted tripping of the PV fuse during
normal operation and in case of a fault in a different string that is
connected in parallel, the rated current of the PV fuse must be
greater than the short-circuit current ISC of the respective
module or string: In ≥ 1.4 ISC.
The value 1.4 was determined in draft standard IEC 60269-6 and
should apply to the simple dimensioning of the fuse.
This value contains the following correction factors for the standard test conditions:
A higher ambient temperature of 45 °C, a higher solar radiation
of 1200 W/m² and the reduction due to the variable loading.
An additional reduction must be used when several fuse holders
are bundled.
According to EN 60469-1, Table1, the following reduction factors
must be applied:
Since the fuses are only operated with around 70 to 80 % of the
load current, a further reduction is only necessary after around
six auxiliary circuits (e. g. three two-pole devices), including also
where the fuses only have maximum power dissipation of 3.4 W.
1) Voltage of the unloaded circuit under standard test conditions
2) M is the number of PV modules connected in series in a string.
3) Note:a difference in the overload current and the short-circuit current is not
meaningful when protecting PV systems, because even for a short circuit,
only small currents occur, which are not designated as short-circuit currents in terms of the standards of overcurrent protective devices. Therefore
in the following we shall refer to fault currents.
4) Note: Unlike with mechanical switching devices, when two fuses (positive
pole and negative pole) are used, you cannot count on a division of the
voltage in the event of residual current tripping. Accordingly every fuse
must be dimensioned with the full rated voltage.
I202_01302 I202_01303
Number of main circuits Rated diversity factor
2 and 3 0.9
5 and 6 0.8
6 ... 9 0.7
10 and more 0.6
© Siemens AG 2012
Fuse Systems
Photovoltaic Fuses
PV cylindrical fuses, 3NW7 0, 3NW6 0
153 Siemens · 2012
Fuses with a lower rated current have a lower power dissipation,
so that the reduction is considerably less The 10 A fuse fuse for
example has a rated power dissipation of 1.5 W, with the result
that no reduction is necessary here.
In the event of extreme solar radiation a further reduction of the
rated current of the fuse may be necessary.
The short circuit current ISC MOD is dependent on regional climatic circumstances. Under particular climatic circumstances
and cloud arrangements, in particular high in the mountains,
higher values for the solar radiation than the 1200 W/m² used
above may by all means occur (above: simplified calculation).
In order to incorporate the peak values into the calculation, we
recommend using the following correction factors.
The rated current of the fuse refers to an ambient temperature of
25 °C.
Cut-off performance will change at higher temperatures. A further reduction may be required for an ambient temperature higher than the ambient temperature used above (+45 °C).
2.To protect the modules and their connecting cables, the
PV fuse should disconnect reliably and in time.
Residual currents can result from faulty modules, double ground
faults or incorrect wiring. The PV modules are rated so that they
can continuously withstand the residual current in the forward
direction without any problems.
However, fault currents which flow through the string or the
PV module in a reverse direction are particularly critical.
This fault current ISC REVERSE is calculated from the number of
parallel connected strings n-1 multiplied by the short circuit
current ISC MOD of a string or module.
I SC REVERSE = n-1 x I SC MOD
This I SC MOD is likewise dependent on the regional
circumstances described above:
ISC MOD = 1.21) x ISC STC
Only above n = 3 parallel strings are PV phase fuses meaningful
at all.
In order to protect the PV module against reverse currents
ISC REVERSE which have a value higher than the reverse current
resistance of the PV module IMOD REVERSE, the "cut-off current" of
the PV fuse must be of a smaller size than the permitted and
tested reverse current resistance of the module.
You can dispense with PV fuses if the reverse current resistance
of the PV modules is greater than the residual current:
IMOD REVERSE > ISC REVERSE
The manufacturers of the modules normally test their modules
with a 1.35x reverse current, for two hours.
For protection, you therefore need a fuse that disconnects earlier
under these conditions.
1) Climate zone-dependent correction factor 1.2 … 1.6
(see the table on page 153).
2) Iz is the permitted capacity of the line/cable.
The PV fuses have a "disconnect current" (generally referred to
as large test current If
), which causes the fuse to disconnect at
1.45 x the rated current in less than one hour (at the latest).
In order to connect the tested reverse current resistance of the
PV moduleIMOD REVERSE with the cut-off performance of the fuse,
we recommend the use of a conversion rate of 0.9.
For the rated current of the PV fuse, In produces the following
dimensioning rules:
In ≤ 0.9 x I MOD REVERSE
This does not consider possible fault currents, if any, which are
fed by the back-up batteries and/or the solar converters.
Protection of the factory-fitted connecting cables of the
PV module should be mainly ensured by the manufacturer.
Connecting cables/wires of a string must be able to withstand
n times the short-circuit ISC MOD. As with other cables and wires,
the following simple relationship applies:
In ≤ Iz
2)
If several strings connected in parallel are grouped together, the
aforementioned dimensioning rules also apply. The rated current
of the PV fuse group should be at least 1.21) times greater than
the total of the short-circuit currents of the group.
Climate zone Max. solar radiation Correction
factor
Standard test conditions 1000 W/m² 1
Moderate climate zone 1200 W/m² 1.2
Moderate climate zone/high mountains 1400 ... 1600 W/m² 1.4 ... 1.6
Africa 1400 ... 1600 W/m² 1.4 ... 1.5
© Siemens AG 2012
Fuse Systems
Photovoltaic Fuses
PV cumulative fuses
154 Siemens · 2012
■Technical specifications
■Characteristic curves
Fuse links Fuse bases
3NE1 ...-4 / -4D / -4E 3NH7 3..-4
Sizes 1, 1L, 2L, 3L 1L 2L
Standards IEC 60269-6 IEC 60269 IEC 60269-6
Operational class gPV
Rated voltage Un V DC 1000 at time constant (L/R) 3 ms 1000
Rated current In A DC 63 ... 630 250 400
Rated short-circuit strength kA 30
Rated breaking capacity kA DC 30
Breaking capacity
• Utilization category AC-20B, DC-20B
Max. power dissipation of the fuse link W 90 110
No-voltage changing of fuse links Yes
Sealable when installed Yes
Mounting position Any, but preferably vertical Any, but preferably vertical
Current direction Any
Ambient temperature °C -25 ... +55, humidity 90 % at +20
Tightening torques Nm 20
Prospective short-circuit current
63A
80A100A
125A
160A
315A
400A
[A]
6 8104
104642
103642
102642
101642
100642
10-1
642
428 103 4 6 28 102 4 6
10-2
642
10-3
1 10 2
p
© Siemens AG 2012
Virtual melting time
I202_02188
[s] vs
Fuse Systems
Photovoltaic Fuses
PV cumulative fuses
155 Siemens · 2012
■Dimensional drawings
3NE1
3NH7 3..-4
Fuse bases with a swiveling mechanism, 3NH7 3..-4
■Schematics
1-pole
Size In b h1 h2 t1 t2
A mm
1 63 ... 160 52 66,5 135 50 13,5
1L 200, 250 52 106,5 175 50 13,5
2L 315, 400 60 106,5 189 57 15
3L 500, 630 75 125,5 201 68,5 17,5
d f d a1
a2
6 c
30 20,5 20,5
Drilling plan
Size Dim. a
mm
1L 65
2L 65
3L 80
Size Dimensions
a1 a2 b c d e f g
mm
1L 71 75 306 270 73 130 362 313
2L 79 83 326 296 87 144 390 335
3L 93 97 341 311 101 158 418 359
© Siemens AG 2012
11 b c g I202_02190 102,5 a
I202_02191
Fuse Systems
Notes
156 Siemens · 2012
© Siemens AG 2012
© Siemens AG 2012
The information provided in this configuration Manual contains
descriptions or characteristics of performance which in case of actual
use do not always apply as described or which may change as a result
of further development of the products. An obligation to provide
the respective characteristics shall only exist if expressly agreed in the
terms of contract. Availability and technical specifications are subject to
change without notice.
All product designations may be trademarks or product names
of Siemens AG or supplier companies whose use by third
parties for their own purposes could violate the rights of
www.siemens.com/lowvoltage the owners. www.siemens.com/lowvoltage
Subject to change without prior notice
PDF only
MP.R3.LV.0000.00.2.92
CM 0612 156 En
© Siemens AG 2012
Siemens AG
Infrastructure & Cities Sector
Low and Medium Voltage Division
Low Voltage Distribution
Postfach 10 09 53
93009 REGENSBURG
GERMANY
PH_05_2012_umschlag_en.indd 2 PH_05_2012_umschlag_en.indd 2 13.06.2012 15:03:46 13.06.2012 15:03:46
© Siemens AG 2012
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