Patent ID: 6295930
Filing Date: 2001-10-02
Classification: H01H

Abstract:
A circuit breaker, comprising:a cylindrical portion having a gunpowder and an exploding means for exploding the gunpowder by application of electric power to the gunpowder, the cylindrical portion being provided with an opening at least one end;a base material securing the cylindrical portion, at least the surface of which is made of insulating material, the base material defining a recessed portion;a conductor fixed to the base material and having a break portion located at a position opposite to the opening of the cylindrical portion, the break portion being broken by explosive force of the gunpowder;a first metallic cover portion covering the cylindrical portion and the break portion; anda second metallic cover portion covering the base material from an opposite side to the cylindrical portion engaged in the recessed portion of the base material,wherein the first and second cover portions are fixed to the base material by directly connecting the first and second cover portions to each other.