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Sliding bar

The sliding bar can be used to implement an interlock between three 3VA molded case circuit breakers of the same size. Up to three padlocks (shackle diameter of between 4.5 and 8 mm) can be attached in order to lock the bar in position.

Installing the sliding bar

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Side plate

Locking slide

  1. Attach two side plates ① to the sides of the 3VA molded case circuit breakers.

  2. Attach the locking slide ② securely to the two side plates.

Locking the handle

The handle of the 3VA molded case circuit breaker to be locked is blocked when the locking slide is moved into position.

Up to three commercially available padlocks (shackle diameter 4.5 to 8 mm) can be fitted to lock the slide in position and prevent operation of the blocked handle. The blocked 3VA molded case circuit breaker is thus always locked in the safe OFF (O) position, while the released circuit breaker can still be operated.

If the locking slide is in the midway position and locked there by padlocks, both or all three of the molded case circuit breakers can be blocked or held securely in the OFF (O) position.

Example of an interlock between two 3VA molded case circuit breakers:

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Scope of delivery

The order number includes the following items:

Interlock combinations

The following interlock combinations can be implemented with the sliding bar:

Possible combinations of handle positions

When a sliding bar interlock between two 3VA molded case circuit breakers is locked by padlocks, the following combinations of sliding bar position are possible:

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When a sliding bar interlock between three 3VA molded case circuit breakers is locked by padlocks, the following combinations of handle position are possible:

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Installation of other accessories

When the front sliding bar is fitted, some other accessories cannot be installed, see chapter Possible combinations of of accessories.