Electrical switching apparatus having an arc runner with an...

H - Electricity – 01 – H

Patent

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H01H 9/46 (2006.01) H01H 1/22 (2006.01) H01H 9/38 (2006.01)

Patent

CA 2446958

A circuit breaker (1) includes a load terminal (15) and a line terminal (13); a pair of main contacts (17); a separable pair of arcing contacts (63); and a moving conductor assembly (23) having a contact carrier (29) mounted for movement beween an open position and a closed position to open and close the separable pairs of contacts (17, 63). The circuit breaker (1) further includes an arc chute (83) and an arc runner (75) electrically connected to a stationary arcing contact (61) and extending toward the arc chute (83) to provide a path for an arc struck between the separable pair of arcing contacts (63) as the separable pair of arcing contacts open with movement of the moving conductor assembly (23) from the closed position. The arc runner (75) has a longitudinal elongated raised ridge (97) generally laterally centered.

L'invention concerne un disjoncteur (1) comprenant une borne de charge (15) et une borne de ligne (13), une paire de contacts principaux (17), une paire séparable de contacts d'arc (63) ainsi qu'un ensemble conducteur mobile (23) comportant un support de contact (29) monté en vue d'un mouvement entre une position ouverte et une position fermée impliquant l'ouverture et la fermeture des paires séparables de contacts (17, 63). Ce disjoncteur (1) comprend également une boîte de soufflage (83) et une spire conductrice (75) connectée électriquement à un contact d'arc fixe (61) et se prolongeant vers la boîte de soufflage (83) de façon à fournir un trajet à un arc électrique produit entre la paire séparable de contacts d'arc (63) lors d'une ouverture sous l'effet d'un mouvement de l'ensemble conducteur mobile (23) à partir de la position fermée. La spire conductrice (75) comporte une arête saillante allongée (97) généralement centrée de manière latérale.

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