Accessories
3.9 Accessories for locking and interlocking
3WJ Air Circuit breakers
Operating Instructions, 12/2022, L1V30828903001-01
127
Configuration: Three Circuit Breakers back to back
Description:
Two Circuit Breakers can be closed/opened independently of each other, with the third only
ready to be closed when the other two are open. If the third Circuit Breaker is closed, the
other two cannot be closed.
Required equipment:
Each Circuit Breaker is equipped with an interlocking module and a Bowden wire. The
Bowden wire must be ordered separately.
Terminals for the Bowden wires:
1. Bowden wire: S
1O1 - S2I1
2. Bowden wire: S
2O1 - S1I1
3. Bowden wire: S
2O2 - S3I1
4. Bowden wire: S
3O1 - S2I2
-head screws with strain washer must be screwed into the index brackets at the
2
1
1
1
3
1
2
2
Possible Circuit Breaker statuses:
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