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10/15 MN03402004Z-DE/EN
Short-circuit protection at
motor-protective circuit-
breakers
230 V
1)
I
I
u
q
[A]
[kA]
PKE12/XTU(A)-1.2
100
PKE12/XTU(A)-4
100
PKE12/XTU(A)-12
100
PKE32/XTU(A)-12
100
PKE32/XTU(A)-32
100
PKE65/XTUW(A)-32 65
PKE65/XTU(A)-65
65
The following Tabelle 12 shows the short-circuit breaking
capacity of PKE motor-protective circuit-breaker.
Fuse can be interconnected in the upstream circuit to
increase the switching capacity to 100 kA.
Table 12:
400 V
2)
2)
I
q
3)
[A]
[kA]
[A]
N
100
N
N
100
N
N
100
N
N
100
N
N
100
N
100
65
100
160
65
160
1) Rated uninterrupted current I
2) Rated conditional short-circuit current I
IEC/EN 60 947-4-1
3) Fuse (A gG/gL) for enhancing the switching capacity of the
motor-protective circuit-breaker to 100 kA
N Not required
Short-circuit protection at
motor-protective circuit-
breakers
Switching capacity of PKE motor-protective circuit-
breakers with type 1 and 2 coordinations
440 V
500 V
2)
I
I
q
3)
3)
[kA]
[A]
[kA]
50
50
10
50
50
10
20
50
10
25
50
6
25
50
6
45
100
15
45
160
15
u
690 V
2)
2)
I
q
q
3)
[A]
[kA]
50
3
50
3
50
3
50
3
50
3
100
5
160
5
as per
q
3)
[A]
50
50
50
50
50
100
160
49
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