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Aichi Electrical Works Co. | Date: 2010-04-07

A power transfer switch in which a cross bar including a movable contact is rotated to come into contact with one of fixed contacts disposed on left and right sides of the cross bar. The cross bar has a non-circular cross-section including a protruded piece on left and right, and a rotating angle thereof is greater than a rotating allowable angle of the movable contact between the fixed contacts. A through hole into which the cross bar is inserted with play is formed on a base portion of the movable contact, and a step portion for receiving the protruded piece of the cross bar and a spring housing portion extended in a direction of a central axis of the movable contact are formed in the through hole. A compression spring is accommodated in the spring housing portion to cause the cross bar to elastically hold the movable contact.

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