circuit breaker with independent verklinkungseinrichtung of bewegbaren schaltkontaktes.

摘要

A circuit breaker has a trip device for the automatic separation of contacts (1, 6) and a locking device, which is independent of the trip device, for separating the contacts (1, 6) in the event of an erroneously high current. In addition to a trip shaft (31), which is required for the trip device, and a locking lever (27) interacting therewith, the independent locking device has an elongated hole (40) and a leaf spring (41) against which the trip shaft (31) can be displaced in the elongated hole (40). The trip shaft (31) is moved in the elongated hole (40) under the influence of an electrodynamic ejection force between the contacts (1, 6). At the same time, the locking surfaces (30, 31) slide off from one another. The locking device described is suitable for low-voltage circuit breakers of single-pin or multi-pin design which operate to limit the current. IMAGE