| 摘要 |
<p>A molded case circuit breaker according to the present invention comprises: a front compartment; a rear compartment separated from the front compartment; a fixed contact part which is disposed on one side of the front compartment and which comes into electrical contact with a power source or a subordinate thereof; a operating contact part which is movably disposed in the front compartment and which comes into contact with or is separated from the fixed contact part; an opening/closing device which is disposed in the rear compartment and which operates so as to bring the operating contact part in contact with the fixed contact part or to separate the operating contact part from the fixed contact part; an operating device which is disposed in the front and rear compartments and which moves the operating contact part in accordance with the movement of the opening/closing device; an arc extinguishing chamber which is disposed on one side of the front compartment and which extinguishes an arc induced during the process of separation of the fixed contact part and the operating contact part; and a barrier for preventing from at least one location separated from the fixed contact part the arc from moving to the rear during the trajectory of the operating contact part.</p> |
