Arc chute for circuit protective devices
AssigneeSchneider Electric USA, Inc.
InventorJohn J. Shea
Life of this patent
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Abstract
An arc chute includes a pair of opposing side walls and a non-magnetic body. The side walls are formed of an electrically insulating material. The non-magnetic body includes an open area and a plurality of slots through which to facilitate gas flow. The arc chute also includes a back wall arranged on a back side of the non-magnetic body and including at least one first insulator and at least one magnet. The at least one first insulator is arranged between the at least one magnet and the open area and configured to electrically isolate the magnet from the non-magnetic body. The magnet is configured to generate a magnetic field to redirect an arc in the open area toward one of the side walls.
Claims20
An apparatus for extinguishing an arc, comprising:
- an arc chute including:
- a pair of opposing side walls formed of an electrically insulating material;
- a non-magnetic body arranged between the side walls, the non-magnetic body having an open area and a plurality of slots through which to facilitate gas flow;
- a back wall arranged on a back side of the non-magnetic body, the back wall including at least one first insulator and at least one magnet, the at least one first insulator being arranged between the at least one magnet and the open area and configured to electrically isolate the magnet from the non-magnetic body, the magnet generating a magnetic field to redirect an arc in the open area toward one of the side walls.
Dependencies are inferred from the claim text.