| 摘要 |
To improve the economics of production and the reliability of product by simplifying a power cut-off structure, the present invention includes: a body having an input connection unit connected to a power supply side and an output connection unit connected to a load side; a switch handle rotatably combined with a support frame which is prepared in the center of the body, a link member is engaged in a lower end thereof and selectively moving the link member up and down by being rotated; a cross bar which is selectively downwardly pressurized by the link member; an elastic switch bar arranged in between the input connection unit and output connection unit and providing the elastic resilience by being gradiently formed to selectively conduct the input connection unit and output connection unit; a bimetal support of which one end is connected to the gradient part of the elastic switch bar and prepared to be backwardly bent due to thermal resistance in case of inflow of excess current; a trip unit arranged to move forward and backward by being come in contact with an upper end rear side of the bimetal support and having an inclined surface in the lower part; and a latch unit prepared to be surface-contacted and bound to the inclined surface since one side of the latch unit is hinge-connected to the link member and is downwardly pressurized. |
