262 / 543
17/166 Circuit-breakers, switch-disconnectors
2010 CA08103002Z-EN
www.eaton.comMax. rated uninterrupted current 160 A
NZMB1
NZMC1
NZMN1
NZMH1
Switching capacity
Rated short-circuit making capacity
240 V
I
cm
kA
63
121
187
220
400/415 V
I
cm
kA
53
76
105
220
440 V
I
cm
kA
53
63
74
74
525 V
I
cm
kA
–
24
40
40
690 V
I
cm
kA
–
14
17
17
Rated short-circuit breaking capacity I
cn
I
cu
according to IEC/EN 60947
Operating sequence O-t-CO
240 V 50/60 Hz
I
cu
kA
30
55
85
100
400/415 V 50/60 Hz
I
cu
kA
25
36
50
100
440 V 50/60 Hz
I
cu
kA
25
30
35
70
525 V 50/60 Hz
I
cu
kA
–
12
20
20
690 V 50/60 Hz
I
cu
kA
–
8
10
10
500 V DC
3)
I
cu
kA
–
–
15
30
750 V DC
3)
I
cu
kA
–
–
–
–
I
cs
according to IEC/EN 60947
Operating sequence O-t-CO-t-CO
240 V 50/60 Hz
I
cs
kA
30
55
85
100
400/415 V 50/60 Hz
I
cs
kA
25
36
50
50
440 V 50/60 Hz
I
cs
kA
18.5
22.5
35
35
525 V 50/60 Hz
I
cs
kA
–
6
10
10
690 V 50/60 Hz
I
cs
kA
–
4
7.5
7.5
Maximum LV h.b.c. fuse
6)
A gG/gL NZM.1-…20…100: 200
NZM.1-…125, 160: 315
Rated short-time withstand current
t = 0.3 s
I
cw
kA
–
–
–
–
t = 1 s
I
cw
kA
–
–
–
–
Utilization category according to IEC/EN 60947-2
A
A
A
A
Rated making and breaking capacity
Rated operational
current
AC-1
400/415 V 50/60 Hz
I
e
A
160
160
160
160
690 V 50/60 Hz
I
e
A
160
160
160
160
AC-3
400/415 V 50/60 Hz
I
e
A
160
160
160
160
690 V 50/60 Hz
I
e
A
160
160
160
160
DC-1
3)
500 V DC
I
e
A
–
–
125
125
750 V DC
I
e
A
–
–
–
–
DC-3
3)
500 V DC
I
e
A
–
–
125
125
750 V DC
I
e
A
–
–
–
–
Lifespan, mechanical
of which max. 50 % trip by shunt/undervoltage release
Operations
20000
20000
20000
20000
Lifespan, electrical
AC-1
400/415 V 50/60 Hz
Operations
7500
7500
10000
10000
690 V 50/60 Hz
Operations
–
5000
7500
7500
AC-3
400/415 V 50/60 Hz
Operations
–
–
7500
7500
690 V 50/60 Hz
Operations
–
–
5000
5000
DC-1
3)
500 V DC
Operations
–
–
10000
10000
750 V DC
Operations
–
–
–
–
DC-3
3)
500 V DC
Operations
–
–
5000
5000
750 V DC
Operations
–
–
–
–
Max. operating frequency
Ops/h 120
120
120
120
Heat dissipation per pole at I
u 5)
W 16.7
16.7
16.7
16.7
Total opening delay on short-circuit
ms
< 10
< 10
< 10
< 10
Technical data that diverge from products for the IEC market
Switching capacity of NA switch (UL489, CSA 22.2 No. 5-09)
Short-circuit current rating (SCCR)
240 V 60 Hz
kA
35
–
85
–
480 V 60 Hz
kA
25
1)
–
35
1)
–
600 V 60 Hz
kA
–
–
–
–
Notes
1)
Switching capacity of NA switches with NZM…1‐…(C)NA: 480 Y/277 V
2)
For rated operational current AC-3 with NZM4: 400 V: max. 650 kW; 690 V: max. 600 kW
3)
DC data apply only for NZM...A... with thermomagnetic release
4)
For switching capacity NZM2...NA: 600 V/347 V
5)
For thermal losses per pole the specification refers to the maximum rated operational current of the construction size
6)
Maximum back-up fuse, if the expected short-circuit currents at the installation location exceed the switching capacity of the circuit-breaker
7)
For higher switching capacity please inquire
NZM...1, NZM...2, NZM...3, NZM...4