Accessories
4.7 Locking and interlocking
3VA molded case circuit breakers
286 Manual, 04/2015, A5E03603177010-02
Example of an interlock between two 3VA molded case circuit breakers:
The order number includes the following items:
● 2 side plates
● 1 locking slide
The following interlock combinations can be implemented with the sliding bar:
● Interlocks can be implemented between the same rated current versions of molded case
circuit breakers:
– 3VA1 100/160 A with 3VA1 100/160 A
– 3VA2 100/160/250 A with 3VA2 100/160/250 A
– 3VA2 400/630 A with 3VA2 400/630 A
● Mutual interlocks can be implemented between the same sizes of all 2-pole, 3-pole and 4-
pole molded case circuit breakers.
Possible combinations of handle positions
When a sliding bar interlock between
3VA molded case circuit breakers is locked by
padlocks, the following combinations of sliding bar position are possible:
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