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4.45
Sales Service Centre • 01952 675612 Technical Support Helpline • 01952 675689
Transformer/Motor Protection
3 Phase 400V DOL Starting
Recommended Circuit Breaker
kW hp
FLC A (A) NBN (A) NCN (A)
NDN
HRC
Fuse (A)
0.18 0.25 0.87 -
2
-
4
0.25 0.33 1.17 -
3
-
4
0.37 0.5
1.2
-
3
-
4
0.55 0.75 1.8
-
4
-
6
0.75 1.0
2.0
10
6
6
6
1.1
1.5
2.6
16
10
6
10
1.5
2.0
3.5
16
10
10
16
2.2
3.0
4.4
20
16
16
16
3.0
4.0
6.3
25
20
20
20
4.0
5.5
8.2
32
25
25
25
5.5
7.5
11.2 50
40
40
32
7.5
10
14.4 63
50
50
40
11
15
21
-
-
-
63
15
20
27
-
-
-
80
18.5 25
32
-
-
-
80
22
30
38
-
-
-
80
30
40
51
-
-
-
100
37
50
63
-
-
-
125
45
60
76
-
-
-
125
55
75
91
-
-
-
160
75
100 124 -
-
-
200
90
125 154 -
-
-
250
110 150 183 -
-
-
315
132 175 219 -
-
-
355
150 200 240 -
-
-
355
160 220 257 -
-
-
355
Protection
Devices