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17/170 Circuit-breakers, switch-disconnectors
Molded Case Switch
2010 CA08103002Z-EN
www.eaton.comNS1-...-NA
max. 125A
NS2-...-NA
max. 250A
NS3-...-NA
max. 600A
NS4-...-NA
max. 1200A
Molded Case Switch
Rated peak withstand current
U
imp
Main contacts
V 6000
8000
8000
8000
Auxiliary contacts
V 6000
6000
6000
6000
Rated operating voltage
U
e
VAC 690
690
690
690
Max. rated uninterrupted current
IEC/EN 60947-2 Annex L
I
n
A 125
250
600
1200
UL489/CSA 22.2 No. 5.1
I
n
A 125
250
600
1200
Overvoltage category/pollution degree
III/3
III/3
III/3
III/3
Rated insulation voltage
U
imp
V 690
1000
1000
1000
Switching capacity according to UL 489, CSA 22.2 No. 5.1
240 V 60 Hz
KA 85
150
150
85
480 V 60 Hz
KA 35
100
100
65
600 V 60 Hz
KA –
50
50
42
Switching capacity divergent from products for North America.
Rated short-circuit making capacity
240 V 50/60 Hz
I
cm
KA 187
330
330
187
400/415 V 50/60 Hz I
cm
KA 105
330
330
154
440 V 50/60 Hz
I
cm
KA 74
286
286
143
525 V 50/60 Hz
I
cm
KA 53
105
143
84
690 V 50/60 Hz
I
cm
KA 17
53
74
74
Rated short-circuit breaking capacity
I
cc
= I
cu
To IEC/EN 60947-2 Annex L
I
cu
to
IEC/EN 60947
test cycle
O-t-CO
240 V 50/60 Hz
I
cu
KA 85
150
150
85
400/415 V 50/60 Hz I
cu
KA 50
150
150
70
440 V 50/60 Hz
I
cu
KA 35
130
130
65
525 V 50/60 Hz
I
cu
KA 20
50
85
40
690 V 50/60 Hz
I
cu
KA 10
20
35
35
I
cs
according
to
IEC/EN 60947
test cycle
O-t-CO-t-CO
240 V 50/60 Hz
I
cs
KA 85
150
150
43
400/415 V 50/60 Hz I
cs
KA 50
150
150
35
440 V 50/60 Hz
I
cs
KA 35
130
130
33
525 V 50/60 Hz
I
cs
KA 10
37.5
33
20
690 V 50/60 Hz
I
cs
KA 7.5
5
9
18
Lifespan, mechanical
(of which max. 50 % trip by shunt/undervoltage release)
Operations
20000
20000
15000
10000
Maximum operating frequency
ops./h
120
120
60
60
Lifespan, electrical
AC-1
400/415 V 50/60 Hz Operations
10000
10000
5000
3000
690 V 50/60 Hz
Operations
7500
7500
3000
2000
AC-3
400/415 V 50/60 Hz Operations
7500
6500
2000
2000
690V 50/60 Hz
Operations
5000
5000
2000
1000
Heat dissipation per pole at I
u
1)
W
8.7
19
40
97
Total downtime on short-circuit
ms
< 10
< 10
< 10
< 25
≦
415 V
< 35 > 415 V
Notes
1)
Figures apply to the maximum rated operational current of the construction size
NS...-...NA