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Dimensions
Section 12
Short-circuit current limiting (cont.)
Technical advice
NG125a, N, H, L
2P / 3P / 4P
Peak current
DB124300
Prospective short-circuit current (kA eff.)
Peak current (kA)
1
2
10
1
2
4
10
3
5
8
6
7
9
20
5 6 7 8 9
4 3
100
50 40 30
20
15
2
9
8
10
1
3
cos phi = 0.3
= 0.5
= 0.7
= 0.8
= 0.9
= 0.95
6
4
11
12
5
7
b
b
Circuit breaker type in accordance with the mark:
v
v
1: NG125a 3, 4P
v
v
2: NG125N 2, 3, 4P
v
v
3: NG125H 3, 4P
v
v
4-5: NG125H 2P/NG125L 3, 4P
v
v
6: NG125L 2P
v
v
7: NG125 LMA 2, 3, 4P
v
v
8: 10 -16 A
v
v
9: 20-25 A
v
v
10: 32-40 A
v
v
11: 50-63 A
v
v
12: 80-125 A
Thermal stress
DB405608
Prospective short-circuit current (kA eff.)
Thermal stress (A²s)
10A
16A
20A
25A
32A
40A
50A
125A
2
3 6
100A
63A
1
7
5
4
80A
10ms
10
10
10
10
10
6
5
2
4
3
0.1
1
10
100
5
5
5
5
5
b
b
Circuit breaker type in accordance with the mark:
v
v
1: NG125a 3, 4P
v
v
2: NG125N 2, 3, 4P
v
v
3: NG125H 3, 4P
v
v
4-5: NG125H 2P/NG125L 3, 4P
v
v
6: NG125L 2P
v
v
7: NG125LMA 2, 3, 4P
Limitation curves for network
Ue: 550 V AC