Patent ID: 9373469
Filing Date: 2016-06-21
CPC Classification: H01H

Claim Text:
1. A molded case circuit breaker, comprising: a case provided with a power side terminal portion and a load side terminal portion to which a power side external terminal and a load side external terminal are respectively connected; an interrupter assembly installed in the case and provided with an arc gas outlet for externally discharging arc gas generated from inside the interrupter assembly; an exhaustion guiding portion disposed between the interrupter assembly and the load side terminal portion and comprising a gas divergence portion configured to provide an arc gas passage diverged to two vent chutes of the load side terminal portion; an exhaustion cover mounted to the case configured to cover the exhaustion guiding portion; and exhaustion guides spaced from each other in the exhaustion guiding portion in a direction perpendicular to an arc gas discharge direction, wherein the gas divergence portion is disposed between the exhaustion guides and the arc gas passage is formed by the exhaustion guides and the gas divergence portion, wherein the exhaustion guiding portion comprises an opening facing an installation surface of the molded case circuit breaker and the exhaustion cover is detachably mounted to a lower surface of the case and configured to open and close the opening of the exhaustion guiding portion.