Auxiliary tripping device for tripping a circuit breaker

摘要

The unit has a drive part associated with a blade (4) movable between a neutral position and an active position. A latch (31) is fitted in a swiveling manner around a swiveling axis (X2-X'2) to secure the blade in its neutral position. The latch comprises a nose (46) salient in a direction passing through the swiveling axis so as to comprise a salient end where localized latching of the blade takes place when the latch in a latching position secures the blade in the neutral position. The latch receives a thrust force acting in a direction of resetting of the blade to the latching position.