| 摘要 |
PROBLEM TO BE SOLVED: To enable switching of two sets of contact parts with time differences provided thereto respectively by providing a fixed contact part fixed to a body and has a first fixed contact plate and a second fixed contact plate, and a movable contact part with a first movable contact and a second movable contact. SOLUTION: A fixed contact part 4 is provided with a first contact plate 41, having one end 41 at the contact piece side and a second fixed contact plate 42 adjacent to the plate 41 along a drive direction and disposed being displaced only by a specified size from the end 41c. When the other end 32 of a movable contact piece 3 is driven in the drive directionα, a first movable contact slide on the plate 41 at first to put the part between the piece 3 and the plate 41, and then when the piece 3 is driven exceeding a specified sizeδ, a second movable contact slide on the plate 42 to put on the part between the piece 3 and the plate 42 to thereby switch on two sets of contact parts with a time difference which corresponds to the specified sizeδ, resulting in the improvement in the reliability of contact.
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