| 摘要 |
PROBLEM TO BE SOLVED: To quicken motion, simplify structure, and ensure liable operation by quickly interlocking when current overload arose by interlock of an alloy piece, a moving device, and a control component, springing up an elastic contact piece to shut off current, and automatically returning to a switch-on preparatory state under a current overload state. SOLUTION: An operation control component composed of an alloy piece 60, a moving device 50, and a control component 40 is installed, the moving device 50 is set within the control component 40, and reciprocates within the control component 40. When the alloy piece 60 is heated by current overload, the alloy piece 60 is bent in the direction of the control component 40, the moving device 50 is moved outward, and comes off from a stopper 22 installed in a switch body 20. As a result, the control component 40 moves to the off state position to release an elastic contact piece 70 from the pressing state of the control component 40 for pushing up, and two contacts connecting to an electric circuit are tripped. Quick reaction, power source shut off, and safety use of electricity are realized.
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