ARC RUNNER OF CIRCUIT BREAKER

摘要

An arc runner of an air circuit breaker is provided to maximize a breaking performance of the circuit breaker by promptly extinguishing an arc in an arc chamber. An arc runner of an air circuit breaker includes an arc discharge promotion member(200) on one side to promote discharge of an arc induced into the arc runner to an arch chamber side. The arc discharge promotion member is an arc discharge promotion guide(210) projected from a plate surface of the arc runner. The arc discharge promotion guide is not thicker than the arc runner. An outer surface of the arc discharge promotion member is embossed with a plurality of projections(211).