| 摘要 |
PROBLEM TO BE SOLVED: To interrupt a current-carrying circuit when a tracking occurs by interposing a thermal fuse in series to the current-carrying circuit extending from a power source to a plug connecting terminal, and providing the thermal fuse in the thermally contact state to the plug connecting terminal. SOLUTION: A plug socket mounting part 61e is integrally molded of an insulating resin in the state where plug connecting terminals 62a, 62b are housed in a terminal housing part 62c, and inserted and fixed vertically through in the state where the front surface of a front plate part 61a is faced to a recessed part 12. A thermal fuse 67 is interposed to a current-carrying circuit between a commercial power source and a plug socket 6, and a tube 68 covering it avoids the short-circuit by the electric contact between the thermal fuse 67 and the extended part 62b of the upper plug connecting terminal 62. The thermal fuse 67 is closely adhered to the extended part 62b through the tube to ensure the thermal contact state, whereby the current-carrying circuit can be interrupted when a tracking occurs. |
