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Cylinder locks for locking the 3VA molded case circuit breaker

The 3VA molded case circuit breaker can also be locked in the OFF (O) or ON (I) position by means of a cylinder lock (type Ronis). The 3VA molded case circuit breaker is protected against further operation once it has been locked.

Cylinder locks (type Ronis) can be fitted to all types of 3VA molded case circuit breaker. The cylinder lock is installed in an accessories compartment of the 3VA molded case circuit breaker.

To provide a cylinder lock, the following 2 components need to be ordered:

Locking in the OFF (O) position

The cylinder lock (type Ronis) is installed with the adapter kit and the cylinder lock housing for locking in the right-hand accessories compartment of the 3VA molded case circuit breaker so that the breaker can be locked in the OFF (O) position. The slide for locking in the OFF position is fitted for this purpose.

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Adapter kit with OFF position slide

Cylinder lock housing for locking

Actuating lever

Cylinder lock (type Ronis)

Lid of accessories compartment

  1. Remove the lid of the accessories compartment ③ from the 3VA molded case circuit breaker.

  2. Drill a hole through the lid at the position marked on the rear face and smooth down the drilled surface with a file.

  3. Insert a cylinder lock (type Ronis) ⑤ and the locking version of the cylinder lock housing ④ in the drilled hole and connect it securely to the accessories compartment lid ② via the actuating lever.

  4. Install the adapter kit ① in the right-hand accessories compartment of the 3VA molded case circuit breaker.

  5. Reattach the accessories compartment lid to the 3VA molded case circuit breaker.

To lock the 3VA molded case circuit breaker in the OFF (O) position, the key must be turned to the vertical "locked" position.

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Locking in the ON (I) position

For safety reasons, a deliberate action is required to lock the breaker in the ON (I) position. The slide for locking in the ON position must be used for this purpose. Further information can be found in the relevant operating instructions.

Use of cylinder locks (type Ronis) for other applications

Cylinder locks (type Ronis) can also be used in the following applications:

Installation of other accessories

When the cylinder lock is fitted in the accessories compartment of the circuit breaker, some other accessories cannot be installed, see chapter Possible combinations of of accessories.

Slide for locking in the OFF position

Slide for locking in the ON position

Cylinder lock housing for locking

Cylinder lock housing for interlocking

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