Patent ID: 6407653
Filing Date: 2002-06-18
Classification: H01H

Abstract:
A circuit interrupter comprising:a housing; separable main contacts within said housing; an operating mechanism within said housing and interconnected with said separable main contacts; and a trip mechanism within said housing and having an automatic trip assembly for generating a tripping operation to cause said operating mechanism to open said contacts upon a predetermined current threshold, said automatic trip assembly including a magnetic yoke, an armature having an armature inner side facing said magnetic yoke, a protrusion member, and an electrical terminal, said magnetic yoke having pivot supports providing for a rotatable disposition of a head portion of said armature, said automatic trip assembly further including a torsion spring having a first leg and a second leg, said first leg abutted against said protrusion member and prevented from moving in a direction away from said armature, said second leg abutted against said armature inner side and applying a force to said armature inner side in a direction to normally rotationally displace a bottom portion of said armature away from said magnetic yoke.