| 摘要 |
<p>In a circuit breaker (100) having a fixed contactor (51) configured to receive power from an electrical circuit and to supply the power to a load side, and a movable contactor (52) configured to open or close a circuit by contacting or being separated from the fixed contactor (51), the circuit breaker includes: a bimetal (31) bent by heat generated from a conductive current; a pressing member (32) coupled to an upper part of the bimetal (31); a cross bar (33) spaced from the pressing member by a prescribed gap, and configured to contact the pressing member (32) and to rotate by being pressed when the bimetal (31) is bent; and a switching mechanism (20) operated by rotation of the cross bar (33), and configured to separate the movable contactor (52) from the fixed contactor (51), wherein a coupling hole (35) for coupling the pressing member (32) is provided at an upper part of the bimetal (31), and wherein the pressing member (32) is bonded to the coupling hole (35) after a prescribed gap (D) between the pressing member and the cross bar (33) has been determined by applying a current when the pressing member (32) is in a state of being freely movable in the coupling hole (35).</p> |
