Improved electromagnetic contactor

Details Improved electromagnetic contactor Improved electromagnetic contactor

H - Electricity

01

H

306/65

H01H 50/18 (2006.01) H01H 50/04 (2006.01) H01H 50/22 (2006.01) H01H 11/00 (2006.01) H01H 50/46 (2006.01)

Patent

CA 2000444

ABSTRACT OF THE DISCLOSURE An electromagnetic contactor includes a housing assembly that may be adapted for one, two, three or four poles. An armature is affixed to a contact carrier either by a flat leaf spring that passes through a slot in a laminated armature or by a press fit of a solid armature into the contact carrier. In one embodiment of the invention, a housing assembly snaps into a base to permit a maximum amount of automatic assembly and a minimum number of components. These components include a base, a magnet assembly having at least one shading coil, a formed coil assembly, two symmetrically disposed springs to return a contact carrier to a neutral position when the coil is de-energized, an armature to complete the magnetic circuit that is attached to the contact carrier, a contact block that supports terminals and stationary contacts, and a contact carrier that carries one or more moving contacts into engagement with the fixed contacts A coil spring for each contact applies a force when the electromagnet is energized to draw the removable contacts to the fixed contacts to close an electric circuit. A magnet clip secures the magnet assembly by latching in place without screws or rivets. In an alternate embodiment, a molded cantilever supports a coil assembly under spring tension.

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