Mechanical Interlocking Feeder Circuit Breakers (Single Load, Open Transition) - Siemens UL 1066 Operating Instructions Manual

19.1.4 Mechanical interlocking feeder circuit breakers (single load, open transition)

The feeder breakers are interlocked so that only one feeder may be closed at a time.
Example
S
S S
1 2
Description:
When one circuit breaker is closed, the other two cannot be closed.
Materials required:
Each circuit breaker has an interlocking module and a Bowden cable. Three additional Bowden cables must be ordered separately.
 (page 19-5)
Order no.
Connections of Bowden cables:
1st Bowden cable : S A
1
2nd Bowden cable : S A
1
3rd Bowden cable : S A
2
4th Bowden cable : S A
2
5th Bowden cable : S A
3
6th Bowden cable : S A
3
19 – 5
Possible circuit breaker states
S
1
3
- S E
1 2 1
- S E
2 3 1
- S E
1 1 1
- S E
2 3 2
- S E
1 1 2
- S E
2 2 2
S
2
S
3