CIRCUIT BREAKER HAVING MECHANICAL LOCK TO PREVENT AUTOMATIC OPERATION

摘要

A mechanical lock for a circuit breaker. The locking mechanism includes a pivoted lever mounted on a fixed portion of the circuit breaker. The pivoted lever includes a hooked portion which may be pivoted into or out of engagement with the latch member of the circuit breaker. When engaging the latch member, the pivoted lever prevents automatic operation of the circuit breaker, while still allowing manual operation thereof. The pivoted lever has an operating member which is operable from the exterior of the tank enclosing the circuit breaker.