Circuit interrupter with improved welded contact interlock

Details Circuit interrupter with improved welded contact interlock Circuit interrupter with improved welded contact interlock

H - Electricity

01

H

H01H 71/50 (2006.01) H01H 71/52 (2006.01)

Patent

CA 2383098

A circuit interrupter including a housing, separable main contacts disposed in the housing and rotatable between a contact open position and a contact closed position, and an operating mechanism disposed in the housing and interconnected with the contacts for rotating the contacts alternatively between the contact open position and the contact closed position. The operating mechanism includes a handle moveable by an operator between handle open and handle closed positions normally corresponding to and resulting in the contact open position and the contact closed position, with the handle including a protrusion. The operating mechanism further includes a crossbar assembly for rotating with the contacts as the contacts rotate between the contact open position and the contact closed position. The crossbar assembly includes a stop member that is positioned to abut against the protrusion as the handle is moved towards the handle open position when the contacts and the crossbar assembly remain in the contact closed position. The operating mechanism also includes a sideplate assembly having stops that prevent disengagement of the handle.

La présente invention concerne un coupe-circuit constitué d'un carter, de contacts mobiles logés dans le carter et basculant entre une position des contacts ouverts et une position des contacts fermés, et d'un mécanisme d'actionnement logé dans le carter et s'interconnectant avec les contacts de façon à en assurer un va-et-vient de basculement entre la position des contacts ouverts et la position des contacts fermés. Ce mécanisme d'actionnement comporte une manette que l'opérateur bascule entre une position d'ouverture de la manette et une position de fermeture de la manette correspondant normalement aux positions d'ouverture et de fermeture des contacts, la manette présentant une excroissance. Le mécanisme d'actionnement comporte également un ensemble crossbar accompagnant les contacts dans leur basculement entre les positions de fermeture et d'ouverture des contacts. L'ensemble crossbar comporte une butée qui est placée de façon à buter contre l'excroissance lorsque la manette vient en position d'ouverture de la manette lorsque les contacts et l'ensemble crossbar restent en position des contacts fermés. Le mécanisme d'actionnement comporte également un ensemble joue pourvu de butées qui interdisent le dégagement de la manette.

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