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Circuit-breakers, switch-disconnectors
2010 CA08103002Z-EN
www.eaton.com17/165
Technical data
General
Standards
IEC/EN 60947 and VDE 0660
Contact protection
Finger and back-of-hand proof to DIN EN 50274/VDE 0660 Part 514
Climatic proofing
Damp heat, constant, to IEC 60068-2-78
Damp heat, cyclic, to IEC 60068-2-30
Ambient temperature
Storage
°C
-25…+70
Operation
°C
-25…+70
Mechanical shock resistance (IEC/EN 60068-2-27)
g
20 (half-sinusoidal shock 20 ms)
Safe isolation according to EN 61140
Between auxiliary contacts and
main contacts
V AC 500
Between the auxiliary contacts
V AC 300
Built-in position
Direction of incoming supply
Any
Degree of protection
Device
In the area of the HMI devices: IP20 (basic degree of protection)
Enclosure
With insulating surround: IP40
With door coupling rotary handle: IP66
Terminal type
Tunnel terminal: IP10
Phase isolator and cable terminal: IP00
Rated uninterrupted current
max. 160 A
max. 300 A
max. 630 A
max. 1600 A
NZMB1 NZMC1 NZMN1 NZMB2 NZMC2 NZMN2 NZMC3 NZMN3 NZMN4 NZMH4
NZMH1
NZMH2
NZMH3
Circuit-breaker
Rated impulse withstand voltage U
imp
Main contacts
V
6000
6000
6000
8000
8000
8000
8000
8000
8000
8000
Auxiliary contacts
V
6000
6000
6000
6000
6000
6000
6000
6000
6000
6000
Rated operating voltage
U
e
V AC 440
690
690
440
690
690
690
690
690
690
V DC
1)
–
–
500
–
–
750
750
–
–
–
Overvoltage category/degree of pollution
III/3
III/3
III/3
III/3
III/3
III/3
III/3
III/3
III/3
III/3
Rated insulation voltage
U
i
V
690
690
690
690
690
1000
1000
1000
1000
1000
For use in IT electrical power networks
V
440
690
690
440
690
690
690
690
525
690
2)
Notes
Vertical and 90° in all directions
With residual-current release XFI:
- NZM1, N1, NZM2, N2: vertical and 90° in all directions
With plug-in adapter elements
- NZM1, N1, NZM2, N2: vertical, 90° right/left
With withdrawable unit:
- NZM3, N3: vertical, 90° 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
90˚
90˚
90˚
90˚
1)
Details apply for 3 pole system protection circuit-breaker with
thermomagnetic release NZMN(H)1(2)(3)-A... up to 500 A.
For rated operating voltage switching on 3 contacts the following applies:
DC correction factor for instantaneous release
response value NZM1: 1.25, NZM2: 1.35, NZM3: 1.45
Setting for I
i
at DC = setting I
i
AC/correction factor DC
Switching of one pole via two series contacts
Switching of one pole via three series contacts
2)
> 800 A = 525
NZM, PN, N, NS