Patent ID: 6633211
Filing Date: 2003-10-14
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 an armature and a magnetic yoke having pivot supports, said armature including a head portion having a first hook-like member and a second hook-like member, said first hook-like member and said second hook-like member facing opposite directions, said first hook-like member having a first recess, said second hook-like member having a second recess, said automatic trip assembly including a pivot pin positioned on said pivot supports and extending through said first recess and said second recess to provide a rotatable disposition of said armature, said automatic trip assembly further including a biasing member applying a force to said armature in a direction to normally rotationally displace a bottom portion of said armature away from said magnetic yoke.