LOCKING APPARATUS FOR A DRAWER TYPE CIRCUIT BREAKER

摘要

A locking apparatus for a drawer type circuit breaker that restricts movement from the test/disconnection position to the operation position on a switchboard. The locking apparatus has a connection sensor for detecting the connection of a switchboard side plug into a drawer type circuit breaker plug. A switchboard-mounted stopper contacts a lock pin mounted to the drawer type circuit breaker when the connection sensor fails to detect a connection between the plugs. The drawer-type circuit breaker has a mounted lock lever for securing the plugs together. The locking apparatus also has an access-inhibiting plate for preventing operator access to the plugs when the circuit breaker is between the test/disconnection position and the operation position.