Circuit interrupter with a magnetically-induced automatic...

Details Circuit interrupter with a magnetically-induced automatic... Circuit interrupter with a magnetically-induced automatic...

H - Electricity

01

H

H01H 71/24 (2006.01) H01H 71/40 (2006.01)

Patent

CA 2333438

A circuit interrupter including a housing, separable main contacts disposed in the housing, and an operating mechanism disposed in the housing and interconnected with the contacts. A trip mechanism is disposed in the housing and has an automatic trip assembly that selectively generates a tripping operation to cause the operating mechanism to open the contacts upon a predetermined current threshold. The automatic trip assembly includes a magnetic yoke, an armature, and an electrical terminal. The magnetic yoke has pivot supports on which are positioned pivot arms of a head portion of the armature. A clamp member applies a clamping force to the head portion of the armature in a direction to normally rotationally displace a bottom portion of the armature away from the yoke and the terminal.

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