Patent ID: 8558648
Filing Date: 2013-10-15
Classification: H01H

Abstract:
1. An electromagnetic switching apparatus comprising: a driving unit having an actuator and configured to control a contact by using an electric signal; and an extinguishing unit configured to switch an external device and comprising: an electrically conductive fixed terminal configured to penetrate a housing, a fixed contact configured to move in a first direction toward the fixed terminal, and configured to move in a second direction away from the fixed contact, a compression coil spring fixed to the fixed terminal and a second end fixed to the fixed contact, the compression coil spring configured to provide an elastic force to the fixed contact in order to separate the fixed contact from the fixed terminal, and a stopper located near the fixed terminal and inserted into a central part of the compression coil spring, the stopper configured to stop the motion of the fixed contact in the first direction at a predetermined distance from the fixed terminal.