Patent ID: 9343257
Filing Date: 2016-05-17
CPC Classification: H01H

Claim Text:
1. A circuit breaker comprising: a heater generating heat due to a conduction current induced by a moving contact of the circuit breaker; a bimetal deformed due to heat generated by the heater to separate a contact point of the moving contact; a magnet generating a magnetic force to move an armature bar when a current above a previously set reference current is induced; a case accommodating the bimetal and magnet, at least part of the case made of a synthetic resin material; a magnet fixing portion integrally formed in the case and made of a synthetic resin material; and a bimetal fixing bolt fixing the bimetal to the heater, wherein the heater is fixed to the magnet fixing portion by a heater fixing bolt, wherein the magnet is fixed to the magnet fixing portion by a magnet fixing bolt, wherein a separating gap exists between the heater and the magnet, and wherein a bolt accommodation portion is formed at the heater to prevent the magnet fixing bolt from contacting the heater.