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Short-circuit protection of the
motor-protective circuit-
breakers
35
01/11 MN03402003Z-DE/EN
Table 2:
Switching capacity of PKZM0/XTPR…BC1 with
type of coordination "1" and "2"
No upstream protective device required,
as it is the auto-protected range (150 kA)
N Not required
1) Rated uninterrupted current
I
u
2) Conditional rated short-circuit current
I
q
according to
IEC/EN 60947-4-1
3) Primary fusing is required if the short-circuit current exceeds the
conditional rated short-circuit current (I
cc
> I
q
).
The conditional rated short-circuit current is determined by the
primary fuse used:
100 A gG/gL, I
q
= 30 kA
50 A gG/gL, I
q
= 100 kA
230 V
400 V
440 V
500 V
690 V
I
u
1)
I
q
2)
I
q
2)
I
q
2)
I
q
2)
I
q
2)
[A]
[kA]
[A]
3)
[kA]
[A]
3)
[kA]
[A]
3)
[kA]
[A]
3)
[kA]
[A]
3)
0.16 – 1
150
N
150
N
150
N
150
N
150
N
1.6
N
N
N
N
N
2.5
N
N
N
N
5
50
4
N
N
N
N
3
50
6.3
N
N
N
42
50
3
50
10
N
N
42
50
42
50
3
50
12
50
50
50
50
15
50
15
50
3
50
16
50
50
50
50
15
50
15
50
3
50
20
50
50
50
50
10
50
6
50
3
50
25
50
50
50
50
10
50
6
50
3
50
32
50
50
50
50
10
50
6
50
3
50
Содержание PKZMO-0,16/XTPRP16BC1
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