Patent ID: 10573477

Abstract:
An electrical contact switch for use in an electrical contactor, which comprises first and second electrical terminals, an electrically-conductive busbar in electrical communication with the first electrical terminal, and at least one fixed electrical contact which is attached to the electrically-conductive busbar. The switch also has an electrically-conductive moveable arm in electrical communication with the second electrical terminal, with at least one moveable electrical contact which is attached to the electrically-conductive moveable arm to form an electrical contact set with the fixed electrical contact. A fixed ferromagnetic element is positioned at or adjacent to a side of the electrically-conductive moveable arm proximate the second electrical terminal, and a moveable ferromagnetic element is provided in physical communication with a side of the electrically-conductive moveable arm which is opposite to the fixed ferromagnetic element. In a closed condition of the electrical contact set, the electrically-conductive moveable arm induces a magnetic field in the fixed and moveable ferromagnetic elements, and thus the moveable ferromagnetic element is magnetically attracted towards the fixed ferromagnetic element to thereby increase a contact pressure on the electrical contact set. An electrical contactor and method of preventing or inhibiting contact bounce of an electrical contactor are also provided.