AIR CIRCUIT BREAKERS - Electrical and Electronics Division

Sr.
No.
SELECTION CHART �OR STAR DELTA STARTERS
MN Relays and ML Contactors
(Type “C” Co-ordination IS8544 (Part1)/IEC 292-1, Type “2” Co-ordination IS13947(Part4/Sec1)/IEC 60947-4-1)
Motor Rating Current at 415V, A
HP kW Line Phase
Relay Range
(A)
1 1 0.75 1.8 1.04 0.9 - 1.5 ML0 ML0 ML0 4
2 1.5 1.1 2.6 1.5 1.4 - 2.3 ML0 ML0 ML0 6
3 2 1.5 3.5 2.02 1.4 - 2.3 ML0 ML0 ML0 6
4 3 2.25 5.0 2.88 2 - 3.3 ML0 ML0 ML0 8
5 4 3.0 6.2 3.58 3 - 5 ML0 ML0 ML0 10
6 5 3.75 7.5 4.32 3 - 5 ML0 ML0 ML0 16
7 6 4.5 9.0 5.2 4.5 - 7.5 ML0 ML0 ML0 16
8 7.5 5.5 11.0 6.34 4.5 - 7.5 ML0 ML0 ML0 20
9 10 7.5 14.0 8.08 6 - 10 ML0 ML0 ML0 20
10 12.5 9.3 18.0 10.4 9 - 15 ML0 ML0 ML0 32
11 15 11.0 21.0 12.1 9 - 15 ML0 ML1 ML1 32
12 20 15.0 28.0 16.2 14 - 23 ML1 ML1.5 ML1.5 40
13 25 18.5 35.0 20.2 14 - 23 ML1 ML1.5 ML1.5 50
14 30 22.5 40.0 23 20 - 33 ML2 ML2 ML2 63
15 35 26.0 47.0 27 20 - 33 ML2 ML2 ML2 63
16 40 30.0 55.0 31.8 30 - 50 ML2 ML3 ML3 63
17 45 33.5 60.0 34.6 30 - 50 ML2 ML3 ML3 80
18 50 37.5 66.0 38.2 30 - 50 ML2 ML3 ML3 80
19 60 45.0 80.0 46.2 30 - 50 ML3 ML4 ML4 100
20 65 48.5 87.0 50 45 - 75 ML3 ML4 ML4 100
21 70 52 94 54.5 45 - 75 ML3 ML4 ML4 125
22 75 55 100 57.5 45 - 75 ML3 ML4 ML4 125
23 90 67.5 120 69.2 45 - 75 ML4 ML6 ML6 160
24 100 75 135 77.9 66 - 110 ML4 ML6 ML6 160
25 125 90 165 95 66 - 110 ML4 ML6 ML6 200
26 150 110 200 115 90 - 150 ML6 ML10 ML10 250
27 175 130 230 132.8 90 - 150 ML10 ML10 ML10 250
28 200 150 275 159 135 - 225 ML10 ML10 ML10 315
29 240 175 310 178.9 135 - 225 ML10 ML10 ML10 400
30 250 185 325 187 135 - 225 ML10 ML10 ML10 400
31 275 204 360 208 135 - 225 ML10 ML12 ML12 400
32 300 225 385 222 180 - 300 ML12 ML12 ML12 500
33 400 300 500 288.6 180 - 300 ML12 ML12 ML12 500
Star
Contactor
Line Delta
HRC Back-up �use
Rating,A
8/29
8