Movable contactor assembly for circuit breaker, has rotation shaft with holding groove surfaces receiving slide pins on outer surface of shaft, such that motion of movable contactor is delayed to return to fixed contactors

摘要

The assembly has rotation shaft (110) with holding groove surfaces (116) for receiving slide pins (131) on an outer circumferential surface of the shaft, such that motion of a movable contactor (120) is delayed to return to fixed contactors (20, 30). An elastic force is provided to the slide pins to accelerate a separation of the movable contactor from the fixed contactors at time of a current limiting operation.