AIR CIRCUIT BREAKERS - Electrical and Electronics Division

8
1 0.05 0.04 0.75 0.15 - 0.25 2 A
2 0.1 0.075 0.28 0.25 - 0.4 2 A
3 0.125 0.09 0.4 0.4 - 0.65 2A
4 0.15 0.11 0.45 0.4 - 0.65 4 A 35
5 0.2 0.15 0.57 0.4 - 0.65 4 A 35
6 0.25 0.19 0.70 0.6 - 1.0 6 A 32
7 0.33 0.25 0.88 0.6 - 1.0 6 A 32
8 0.5 0.37 1.2 1.0 - 1.6 6 A 32
9 0.75 0.55 1.6 1.5 - 2.5 15 A 25
10 1.0 0.75 1.8 1.5 - 2.5 15 A 25
11 1.25 0.92 2.1 1.5 - 2.5 25 A 23
12 1.5 1.1 2.6 2.5 - 4.0 25 A 23
13 1.75 1.3 3.0 2.5 - 4.0 25 A 23
14 2.0 1.5 3.5 2.5 - 4.0 25 A 23
15 2.5 1.8 4.8 4.0 - 6.5 25 A 23
16 3.0 2.2 5.0 4.0 - 6.5 25 A 23
17 4.0 3.0 6.2 4.0 - 6.5 35 A 21
18 5.0 3.7 7.5 6 - 10 35 A 21
19 6.0 4.5 9.0 6 - 10 35 A 21
20 7.5 5.5 11.0 9 - 14 35 A 21
21
* Low Voltage
7.5* 5.5 11.0 11 - 18 35 A 21
8/32
SELECTION CHART �OR DOL STARTERS
MK1 Relays and MK1 Contactors
Sr.No.
Motor Rating 415V - 3 Phase
Relay Range
A
HP kW In,A
Sr.No.
SELECTION CHART �OR STAR DELTA STARTERS
MK1 Relays and MK1 Contactors
Motor Rating Current at 415V, A
HP kW Line Phase
Relay Range
(A)
Back-up �use Rating
Diazed SWG
HRC Back-up �use
Rating,A
1 1 0.75 1.7 1 1 - 1.6 4
2 1.5 1.1 2.4 1.4 1 - 1.6 6
3 2 1.5 3.1 1.8 1.5 - 2.5 6
4 3 2.25 4.4 2.5 2.5 - 4 6
5 4 3.0 5.7 3.3 2.5 - 4 10
6 5 3.75 7.1 4.1 4 - 6.5 10
7 6 4.5 8.4 4.9 4 - 6.5 10
8 7.5 5.5 10.4 6 6 - 10 15
9 10 7.5 13.6 7.9 6 - 10 15
10 12.5 9.3 17.0 9.7 9 - 14 20
11 15 11.0 19.9 11.5 9 - 14 25
12 15* 11.0 19.9 11.5 11 - 18 25
* Low Voltage