Patent ID: 7843290

Claim:
In a molded case circuit breaker, which includes fixed contactors, a movable contactor which is movable to a position for contacting the fixed contactors and to a position for being separated from the fixed contactors, a switching mechanism for driving the movable contactor to contact or be separated from the fixed contactors so as to open/close a circuit, a restricting unit for restricting the switching mechanism, and a handle for manually opening/closing the switching mechanism, the molded case circuit breaker, comprising: a contact on mechanism which trips the switching mechanism by releasing the restricting unit and automatically rotates the handle towards an on position even without manual power so as to indicate a conducted state when the handle is manipulated to move its position to an off position or reset position in a state that contacts of the movable contactor and the fixed contactors are melt-adhered to each other.