Magnetic yoke for electromagnetic trip of switching device has magnetic core cooperating with trip coil formed in one piece with base body of magnetic yoke

摘要

The magnetic yoke (1a) has a base body (2a) of a ferromagnetic material, formed in one piece with a magnetic core (3a) positioned at one end of a trip coil (5a). The magnetic core can be provided by a U-shaped or closed profile at one end of the base body, or by a deep-drawn cylinder at the end of the base body.