Low-voltage circuit breaker with magnetic blasting of the arc by a permanent magnet

摘要

A permanent magnet 32 for magnetic blasting of an arc drawn in an arc-forming chamber 16 is configured in order to displace the arc towards the cutout chamber 18 independently of the polarity of the current. The permanent magnet 32 is of the type with axial magnetization, the magnetizing axis 34 of which is substantially parallel to the direction of extension of the arc and the magnet is arranged in the interface between the arc-forming chamber 16 and the cutout chamber 18 while being juxtaposed with the upper arc horn 36. IMAGE