Patent ID: 9218919
Filing Date: 2015-12-22
Classification: H01H

Abstract:
1. An electrical contactor comprising a pair of first terminals, each having a fixed member with at least one fixed electrical contact facing the other said fixed member; a pair of second terminals having back-to-back electrically-conductive movable arms with an electrically-insulating partitioning element therebetween to insulate the movable arms located respectively on the opposite sides of the partitioning element; each second terminal being associated with a different one of the first terminals, and having a movable electrical contact on the associated movable arm which faces the corresponding fixed contact; the arrangement of the fixed members and the movable arms being such that, when the contacts close, contra-flowing current through the back-to-back movable arms produces a repulsive force therebetween which urges the movable arms away from each other, thereby increasing a force between the fixed and movable contacts; wherein each of two said movable arms, which are located on opposite sides of the partitioning element, comprises a first section proximal to said movable contact thereon and a second section distant from the same movable contact; both the first sections face each other and both the second sections face each other; and the repulsive force produced by and between both second sections is larger than the repulsive force produced by and between both first sections.