Patent ID: 7782162
Filing Date: 2010-08-24
Classification: H01H

Abstract:
1. A switching device wherein a plurality of pairs of a movable contact point, which is provided on an upper end portion of a movable contact piece, and a fixed contact point, which is provided on an upper end portion of a fixed contact piece are provided in parallel connected in series so that an electrical current flows in the same direction between the contact points simultaneously closed, and at least one permanent magnet is disposed on a lateral side of the contact points so that a magnetic field, which extends an arc generated between the contact points in either an upward or downward direction, is formed, wherein a terminal portion of the movable contact piece and a terminal portion of the fixed contact piece, which protrude from a bottom surface of a base that supports the movable contact piece and the fixed contact piece, are connected in series with a bypass fitting so that an electrical current flows in the same direction between the contact points simultaneously closed.