Switching mechanism for circuit breaker - has bracket acting directly on contact giving small mechanism size

摘要

The switching mechanism has a pawl between an operating arm and a contact arm and moved by a magnetic release. The operating arm controls the contact arm via a bracket that engages the pawl. The bracket (12) acts directly on the contact arm (1). The contact arm pivots about the same axis (3) as the pawl (2). The pawl and the contact arm have only one limb. The contact arm slides on its axis (3) via a slotted hole (1a) and is acted on by a switch-off spring (5) looping around the axis. The slotted hole in the contact arm is widened on the side facing away from the contact.