IB 6.1.12.1-1B
3
0
ABB
Table A5 - OD Coil Assembly Resistance Based on Device Rating and Circuit Breaker Frame Size
Grouped ratings all use the same coil assembly.
Standard OD Device Ratings Available by Circuit Breaker Frame Size
OD Coil Assembly
K-225
K-600
K-800
K-1600
K-2000
Turns
Allowable
Resistance
a,b
Maximum Test
Current
[A]
[A]
[A]
[A]
[A]
µΩ
[Α]
20,
15
68
40, 30
40, 30
39
7000
5
70, 50
70, 50
18
1850
10
125, 100, 90
125, 100, 90
125, 100, 90
11
600
20
225, 200, 175, 150
225, 200, 175, 150
225, 200, 175, 150
225, 200, 175, 150
6
212
40
250 250
4
450
c
, 400, 350, 300,
250
d
450
c
, 400, 350, 300,
250
d
3
50
100
600, 500
800, 600, 500
2
30
200
250
250
4
450
c
, 400, 350, 300,
250
d
450
c
, 400, 350, 300,
250
d
3 50
100
800, 600, 500
800, 600, 500
2
30
200
1600, 1200, 1000
1600, 1200, 1000
1
7.5
200
2500,
2000
1
5.0
200
a
Maximum allowable resistance for Ag plated devices that are fully loaded at the highest current rating available for all ratings of the same coil assembly.
b
Double the allowable values for breakers with a Cd plated current path.
c
Rating is not available on OD-3.
d
OD-3 only. All other standard devices use a 4-turn coil for this rating.
Courtesy of NationalSwitchgear.com
