Patent ID: 6194982
Filing Date: 2001-02-27
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; anda 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 an armature and a main member comprising a magnetic yoke and an electrical terminal, said magnetic yoke having pivot supports on which are positioned pivot arms of a head portion of said armature, said head portion of said armature having a first contact area, said main member having a second contact area, said automatic trip assembly further including a clamp member having a first end positioned in contact with said first contact area and a second end positioned in contact with said second contact area, said clamp member applying a clamping force to said head portion of said armature in a direction to normally rotationally displace a bottom portion of said armature away from said yoke and said terminal.