OPERATING MECHANISM FOR SWITCH

摘要

Case 2655 OPERATING MECHANISM FOR SWITCH A disconnect switch has two toggle arm members that are pivotally connected at one of their ends to an operating cam and that are pivotally connected at their respective other ends to a different one of two contact support arms. Each support arm supports a plurality of secondary contacts that are capable of bridging main contacts of the switch. The toggle arm members are movable between a contracted and an expanded position by rotating the operating cam. When the toggle members are in the expanded position they partially overlap and hold the two support arms in a closed position with the secondary contacts in contact with the main contacts. When the toggle members are in the expanded position they are spread out and hold the two support arms in an open position with the secondary contacts remote from the main contacts. Previous disconnect switches did not open and close by rotating an operating cam.