Datasheet

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 protection   
Device   In the operating controls area: IP20 (basic degree of protection)
Enclosures   With insulating surround: IP40
With door coupling rotary handle: IP66
Terminations   Tunnel terminal: IP10
Phase isolator and strip terminal: IP00
Other technical data (sheet catalogue)   Temperature dependency, Derating
Circuit-breakers
Rated current = rated uninterrupted current I
n
= I
u
A 50
Rated surge voltage invariability U
imp
 
Main contacts  V 6000
Auxiliary contacts  V 6000
Rated operational voltage U
e
V AC 440
Overvoltage category/pollution degree   III/3
Rated insulation voltage U
i
V 690
Use in unearthed supply systems  V ≦ 440
Switching capacity
Rated short-circuit making capacity I
cm
 
240 V I
cm
kA 63
400/415 V I
cm
kA 53
440 V 50/60 Hz I
cm
kA 53
Rated short-circuit breaking capacity I
cn
I
cn
 
Icu to IEC/EN 60947 test cycle O-t-CO Icu kA 
240 V 50/60 Hz I
cu
kA 30
400/415 V 50/60 Hz I
cu
kA 25
440 V 50/60 Hz I
cu
kA 25
Ics to IEC/EN 60947 test cycle O-t-CO-t-CO Ics kA 
240 V 50/60 Hz I
cs
kA 30
400/415 V 50/60 Hz I
cs
kA 25
440 V 50/60 Hz I
cs
kA 18.5
   Maximum back-up fuse, if the expected short-circuit currents at the installation
location exceed the switching capacity of the circuit-breaker.
Utilization category to IEC/EN 60947-2   A
Lifespan, mechanical(of which max. 50 % trip by shunt/undervoltage release) Operations  20000
Lifespan, electrical   
AC-1   
400 V 50/60 Hz Operations  7500
415 V 50/60 Hz Operations  7500
Max. operating frequency  Ops/h 120
Total break time at short-circuit  ms < 10
Terminal capacity
Standard equipment   Box terminal
Optional accessories   Screw connection
Tunnel terminal
connection on rear
Round copper conductor   
Box terminal   
Solid 
mm
2
1 x (10 - 16)
06/16/2021 Eaton 259076 ED2021 V80.0 EN 2 / 9