Patent ID: 8440930
Filing Date: 2013-05-14
Classification: H01H

Abstract:
1. A vacuum circuit breaker, comprising: a main circuit part having a moveable contact and a fixed contact, and arranged at a frame in a vertical direction; a rotation shaft provided at one side of the main circuit part; a transfer lever coupled to the rotation shaft and rotating together with the rotation shaft; a connection lever rotatably coupled to the frame, coupled to the transfer lever, and rotating in an opposite direction to the rotation shaft; a conversion lever rotatably coupled to the frame, coupled to the connection lever, and rotating in an opposite direction to the connection lever; a moveable link coupled to the conversion lever, and horizontally moving according to a rotation direction of the rotation shaft; direction conversion links coupled between the moveable link and the moveable contact, and configured to convert a motion direction of the moveable contact according to a moving direction of the moveable link; and a contact pressing spring disposed between the moveable link and the direction conversion link, and configured to maintain a contacted state between the two contacts by generating an elastic force when the moveable link horizontally moves.