Patent ID: 8278573

Claim:
A circuit breaker for use in a high power system by being connected in series to the high power system having an interrupting control circuit, the circuit breaker comprising: a switch device, including: a body formed with a rest portion; a conductive element disposed in the body and having two protruding conductive plug parts; and a latch releasing element disposed in the body; a connecting device, including: a housing; a socket having two receptacle holes formed in the housing, the receptacle holes being each provided inside with a conductive terminal for receiving and engaging the conductive plug part of the conductive element and for being connected in series to the high power system; a safety latch adapted for activating the interrupting control circuit upon being driven by the latch releasing element, when the switch device is coupled to the connecting device to establish an electrical circuit between the conductive terminals and the conductive element; and a pressing holder disposed on the housing and adapted for pivoting about a pivot axis with respect to the housing, the pressing holder having a snap portion for being received by the rest portion in such a manner that the switch device is forcedly pressed against and combined with the connecting device; wherein one of a portion of the body of the switch device where the conductive element is disposed and a portion of the housing of the connecting device where the socket is formed is configured in the form of a protrusion, while the other is configured in the form of a recess corresponding to the protrusion, and wherein the protrusion is sleeved outside with a flexible seal.