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US 2015/0027983 A1Published application
Electric current switching apparatus
AssigneeABB AB
InventorsHarri MATTLAR, Mikko VÄLIVAINIO
Life of this patent
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Abstract
An electric switch includes a movable contact, a stationary contact to be contacted by the movable contact, one or more quenching plates, and a permanent magnet for directing an arc, which is formed when the contacts are separated from each other, to the quenching plate. The quenching plate has a base portion and side portions extending away from the base portion. The permanent magnet is arranged such that the arc is directed towards one of the side portions of the quenching plate.
Claims14
An electric switch, comprising:
- a movable contact;
- a stationary contact for being contacted by the movable contact;
- one or more quenching plates;
- and
- a permanent magnet for directing an arc, which is formed when the contacts are separated from each other, to the quenching plates,
- wherein the quenching plate has a base portion and side portions extending from the base portion, and the permanent magnet is placed closest to the base of the quenching plate such that the side portions extending from the base of the plate extend away from the permanent magnet, and
- wherein the permanent magnet is arranged to direct the arc towards one of the side portions of the quenching plates.
4 more elements
Dependencies are inferred from the claim text.