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Accessories and spare parts
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Siemens LV 10.1 · 2011
* You can order this quantity or a multiple thereof.
4NC current transformers for measuring purposes
Rated primary current
I
pn
Rating P
n
DT Order No.
Price
per PU
PU
(UNIT,
SET,
M)
PS*/
P. unit
PG Weight
per PU
approx.
A
VA
kg
Classes 1 and 3, from 50 to 1500 A
Rated secondary current 1A
4NC51 12-0BC20
Class 3
• For circular conductors with max. diameter 17.5 mm
• For busbars up to max. 12 mm
×
10 mm
50
2.5
A
4NC51 12-0BC20
1 1 unit
103 0.428
60
2.5
A
4NC51 13-0BC20
1 1 unit
103 0.432
75
2.5
A
4NC51 15-0BC20
1 1 unit
103 0.425
4NC51 17-0CC20
Class 1
• For circular conductors with max. diameter 17.5 mm
• For 1 busbar up to max. 12 mm
×
10 mm
100
2.5
A
4NC51 17-0CC20
1 1 unit
103 0.335
150
2.5
A
4NC51 21-0CC20
1 1 unit
103 0.327
200
5
A
4NC51 22-0CE20
1 1 unit
103 0.356
250
5
A
4NC51 23-0CE20
1 1 unit
103 0.352
4NC52 22-0CE20
• For circular conductors with max. diameter 28 mm
• For 1 busbar up to max. 30 mm
×
10 mm
• For 2 busbars up to max. 25 mm
×
5 mm
200
5
A
4NC52 22-0CE20
1 1 unit
103 0.464
250
5
A
4NC52 23-0CE20
1 1 unit
103 0.477
300
5
A
4NC52 24-0CE20
1 1 unit
103 0.363
400
5
A
4NC52 25-0CE20
1 1 unit
103 0.373
4NC53 25-0CE20
• For circular conductors with max. diameter 36 mm
• For 1 busbar up to max. 50 mm
×
10 mm
• For 2 busbars up to max. 40 mm
×
5 mm
400
5
A
4NC53 25-0CE20
1 1 unit
103 0.469
500
5
A
4NC53 26-0CE20
1 1 unit
103 0.410
600
5
A
4NC53 27-0CE20
1 1 unit
103 0.424
750
5
A
4NC53 28-0CE20
1 1 unit
103 0.391
4NC54 31-0CH20
• For circular conductors with max. diameter 45 mm
• For 1 busbar up to max. 60 mm
×
10 mm
• For 2 busbars up to max. 60 mm
×
10 mm
• For 3 busbars up to max. 60 mm
×
5 mm
1000
10
A
4NC54 31-0CH20
1 1 unit
103 0.644
1250
10
A
4NC54 33-0CH20
1 1 unit
103 0.667
1500
10
A
4NC54 34-0CH20
1 1 unit
103 0.713