APPARATUS FOR ELECTRICALLY OPERATING A CIRCUIT BREAKER

摘要

An apparatus for electrically operating a circuit breaker (1) comprising a trip display mechanism (41, 44) for displaying trip condition of the circuit breaker while the circuit breaker is in its trip state. The trip display mechanism comprises an elongate trip detecting plate (41) which is supported pivotally at an intermediate point thereof on a slider (12) and engages at its one tip end (41a) with the handle (2) of the circuit breaker (1) which causes the trip detecting plate (41) to pivot during the trip condition; and an elongate trip display plate (41) having indicia indicative of the trip condition of the circuit breaker (1) at one end (44a) thereof. The display plate (44) is swingably supported at an intermediate point thereof on a frame (3) and engages with the other end (41b) of the trip detecting plate (41) wherein the trip display plate (44) is caused by the trip detecting plate (41) to swing to a position where the indicia appear on a display window (36) during the trip condition of the circuit breaker (1).