CIRCUIT BREAKER WITH POSITIVE ON/OFF INTERLOCK

摘要

A circuit breaker including a pair of lock links straddling and pivoted on the same pin as the latchable cradle of the circuit breaker follow the toggle device of the breaker either by riding on the toggle knee pin or through a pin which bears against the edges of the toggle arms. The lock links have extensions which engage the handle yoke to prevent the handle from being moved to the off position when the circuit breaker contacts are welded closed causing the toggle device to remain erected.