Patent ID: 6525632
Filing Date: 2003-02-25
Classification: H01F,H01H

Abstract:
A magnetic release for an electrical switching device, comprising:a coil being stamped and bent from sheet metal composed of a material being electrically highly conductive and magnetically highly permeable, said coil having first webs disposed at a given distance from one another in a first plane and second webs disposed at the given distance from one another in a second plane and in each case run parallel to one another and offset with respect to one another, said coil having connecting webs in each case disposed between one end of one of said first webs and an adjacent end of one of said second webs and in each case one end of one of said second webs and an adjacent end of one of said first webs, said first webs, said second webs and said connecting webs disposed in such a manner that said first webs, said second webs and said connecting webs are in a helical shape around a center axis, said first webs, said second webs and said connecting webs defining an inside region in a form of a through-opening, said coil additionally having a stationary contact piece of a contact point for a circuit breaker; a holder for a thermal release integrally formed on said coil; a core accommodated in said through opening of said coil; and an armature selected from the group consisting of plunger-type armatures moving inside said coil and hinged armatures.