Electrical contact sets

An electrical contactor comprising:

• a first terminal having at least one first fixed electrical contact;
• a second terminal having at least one second fixed electrical contact;
• a first electrically-conductive movable arm in electrical communication with the first terminal and having at least one first movable electrical contact thereon;
• a second electrically-conductive movable arm in electrical communication with the second terminal and having at least one second movable electrical contact thereon, counter-opposed to the first electrically-conductive moveable arm;
• and
• an actuator for providing motive force to the first and second electrically-conductive moveable arms in opposing directions;
• wherein the or each first moveable electrical contact and the or each second fixed contact form a primary contact set, and the or each second moveable electrical contact and the or each first fixed contact form a secondary contact set, counter-opposed first and second moveable arms thereby forming a current-sharing arm pair between first and second terminals.