PURPOSE: To enable the time delay of a second contact point mechanism by storing the main body of a timer unit into a storage recessed part in the center and terminals in the storage recessed parts in the both sides, respectively, by providing a first switch contact point mechanism on the upper part side of the unit and a second switch contact point mechanism on the bottom side, respectively, and by switching the first and the second contact point mechanisms by an operation body.

CONSTITUTION: A timer unit 7 comprises a set/reset mechanism 63, a switch lever 74 for operating a second switch contact point mechanism 40, and a spring 77, and the switching of the mechanism 40 is controlled by an operation part 65. When an operation body 35 is pushed and operated, a needle 29 is rotated by the inversion of a spring 33, and a mobile machine piece part 32 is separated from a fixed armature 13 and is released. When the operation part 65 is separated from the cam end 66 of a cam 64 by the operation body 35, the cam 64 is rotated clockwise by the spring 77, while the cam end 71 of another cam 68 is switched and is removed from the spring 74, and is rotated clockwise. The second mechanism 40 is released only when a specific period of time elapses after operation.