Protection against direct contact
Finger and back of hand proof to VDE 0106 Part 100
Climatic proofing
Damp heat, constant, to IEC 60068-2-78
Damp heat, cyclic, to IEC 60068-2-30
Ambient temperatureAmbient temperature, storage
- 40 - + 70 °C
Ambient temperatureOperation
-25 - +70 °C
Mechanical shock resistance (10 ms half-sinusoidal shock) according to IEC 60068-2-27
20 (half-sinusoidal shock 20 ms) g
Safe isolation to EN 61140Between auxiliary contacts and main contacts
500 V AC
Safe isolation to EN 61140between the auxiliary contacts
300 V AC
Mounting position
Vertical and 90° in all directions |
| With XFI earth-fault release: |
- NZM1, N1, NZM2, N2: vertical and 90° in all directions |
with plug-in unit |
- NZM1, N1, NZM2, N2: vertical, 90° right/left |
with withdrawable unit: |
- NZM3, N3: vertical, 90° right/left |
- NZM4, N4: vertical |
with remote operator: |
- NZM2, N(S)2, NZM3, N(S)3, NZM4, N(S)4: vertical and 90° in all directions |
Direction of incoming supply
as required
Degree of protectionDevice
In the operating controls area: IP20 (basic degree of protection)
Degree of protectionEnclosures
With insulating surround: IP40
With door coupling rotary handle: IP66
Degree of protectionTerminations
Tunnel terminal: IP10
Phase isolator and strip terminal: IP00
Other technical data (sheet catalogue)
Rated current = rated uninterrupted current [In= Iu]
50 A
Rated surge voltage invariability [Uimp]Main contacts
8000 V
Rated surge voltage invariability [Uimp]Auxiliary contacts
6000 V
Rated operational voltage [Ue]
690 V AC
Rated operational voltage [Ue]
750 V DC
The following settings are required in order to ensure correct tripping:
The fast-response release will take longer to respond when used for DC applications. Because of this, the setting on the trip block inscription, which is specified for AC currents, must be set to a lower value for DC currents.
DC correction factor for instantaneous release response value:
o NZM1: 1.25
o NZM2: 1.35
o NZM3: 1.45
Example: NZM3 Ie = 500A. Desired DC tripping current: 10 * Ie = 5000A.
Calculation:
• Desired DC value / correction factor = AC setting on trip block
• 5000A / 1.45 = 3448 A ~ 7 * Ie = Value that needs to be set on the trip block
Permitted circuit configurations:
Overvoltage category/pollution degree
III/3
Rated insulation voltage [Ui]
1000 V
Use in unearthed supply systems
≦ 690 V
Rated short-circuit making capacity [Icm]240 V [Icm]
330 kA
Rated short-circuit making capacity [Icm]400/415 V [Icm]
330 kA
Rated short-circuit making capacity [Icm]440 V 50/60 Hz [Icm]
286 kA
Rated short-circuit making capacity [Icm]525 V 50/60 Hz [Icm]
105 kA
Rated short-circuit making capacity [Icm]690 V 50/60 H [Ic]
40 kA
Rated short-circuit breaking capacity Icn[Icn]Icu to IEC/EN 60947 test cycle O-t-CO [Icu]240 V 50/60 Hz [Icu]
150 kA
Rated short-circuit breaking capacity Icn[Icn]Icu to IEC/EN 60947 test cycle O-t-CO [Icu]400/415 V 50/60 Hz [Icu]
150 kA
Rated short-circuit breaking capacity Icn[Icn]Icu to IEC/EN 60947 test cycle O-t-CO [Icu]440 V 50/60 Hz [Icu]
130 kA
Rated short-circuit breaking capacity Icn[Icn]Icu to IEC/EN 60947 test cycle O-t-CO [Icu]525 V 50/60 Hz [Icu]
50 kA
Rated short-circuit breaking capacity Icn[Icn]Icu to IEC/EN 60947 test cycle O-t-CO [Icu]690 V 50/60 Hz [Icu]
20 kA
Rated short-circuit breaking capacity Icn[Icn]Icu to IEC/EN 60947 test cycle O-t-CO [Icu]500 V DC [Icu]
60 kA
Rated short-circuit breaking capacity Icn[Icn]Icu to IEC/EN 60947 test cycle O-t-CO [Icu]750 V DC [Icu]
60 kA
Rated short-circuit breaking capacity Icn[Icn]Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics]240 V 50/60 Hz [Ics]
150 kA
Rated short-circuit breaking capacity Icn[Icn]Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics]400/415 V 50/60 Hz [Ics]
150 kA
Rated short-circuit breaking capacity Icn[Icn]Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics]440 V 50/60 Hz [Ics]
130 kA
Rated short-circuit breaking capacity Icn[Icn]Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics]525 V 50/60 Hz [Ics]
37.5 kA
Rated short-circuit breaking capacity Icn[Icn]Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics]690 V 50/60 Hz [Ics]
5 kA
Rated short-circuit breaking capacity Icn[Icn]Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics]500 V DC [Ics]
15 kA
Rated short-circuit breaking capacity Icn[Icn]Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics]750 V DC [Ics]
15 kA
Rated short-circuit breaking capacity Icn[Icn]
Maximum back-up fuse, if the expected short-circuit currents at the installation location exceed the switching capacity of the circuit-breaker.
Rated short-time withstand currentt = 0.3 s [Icw]
1.9 kA
Rated short-time withstand currentt = 1 s [Icw]
1.9 kA
Utilization category to IEC/EN 60947-2
A
Lifespan, mechanical(of which max. 50 % trip by shunt/undervoltage release) [Operations]
20000
Lifespan, electricalAC-1400 V 50/60 Hz [Operations]
10000
Lifespan, electricalAC-1415 V 50/60 Hz [Operations]
10000
Lifespan, electricalAC-1690 V 50/60 Hz [Operations]
7500
Lifespan, electricalAC--3400 V 50/60 Hz [Operations]
6500
Lifespan, electricalAC--3415 V 50/60 Hz [Operations]
6500
Lifespan, electricalAC--3690 V 50/60 Hz [Operations]
5000
Lifespan, electricalDC-1500 V DC [Operations]
7500
Lifespan, electricalDC-1750 V DC [Operations]
7500
Lifespan, electricalDC - 3500 V DC [Operations]
3000
Lifespan, electricalDC - 3750 V DC [Operations]
3000
Lifespan, electricalMax. operating frequency
120 Ops/h
Total break time at short-circuit
< 10 ms
Standard equipment
Box terminal
Optional accessories
Screw terminal
Tunnel terminal
connection on rear
Round copper conductorBox terminalSolid
1 x (10 - 16)
2 x (6 - 16) mm2
Round copper conductorBox terminalStranded
1 x (25 - 185)
2 x (25 - 70) mm2
Round copper conductorTunnel terminalSolid
1 x 16 mm2
Round copper conductorTunnel terminalStranded1-hole
1 x (25 - 185) mm2
Round copper conductorBolt terminal and rear-side connectionDirect on the switchSolid
1 x (10 - 16)
2 x (6 - 16) mm2
Round copper conductorBolt terminal and rear-side connectionDirect on the switchStranded
1 x (25 - 185)
2 x (25 - 70) mm2
Al circular conductorTunnel terminalSolid
1 x 16 mm2
Al circular conductorTunnel terminalStrandedStranded
1 x (25 - 185) mm2
Cu strip (number of segments x width x segment thickness)Box terminal [min.]
2 x 9 x 0.8 mm
Cu strip (number of segments x width x segment thickness)Box terminal [max.]
10 x 16 x 0.8
(2x) 8 x 15.5 x 0,8 mm
Cu strip (number of segments x width x segment thickness)Bolt terminal and rear-side connectionFlat copper strip, with holes [min.]
2 x 16 x 0.8 mm
Cu strip (number of segments x width x segment thickness)Bolt terminal and rear-side connectionFlat copper strip, with holes [max.]
10 x 24 x 0.8 mm
Copper busbar (width x thickness) [mm]Bolt terminal and rear-side connectionScrew connection
M8
Copper busbar (width x thickness) [mm]Bolt terminal and rear-side connectionDirect on the switch [min.]
16 x 5 mm
Copper busbar (width x thickness) [mm]Bolt terminal and rear-side connectionDirect on the switch [max.]
24 x 8 mm
Control cables
1 x (0.75 - 2.5)
2 x (0.75 - 1.5) mm2