Patent ID: 9159512
Filing Date: 2015-10-13
Classification: H01H

Abstract:
1. An electromagnetic opening/closing device, comprising a stationary contact and a moving contact, said electromagnetic opening/closing device being configured to open or close the stationary contact and the moving contact in accordance with an exterior command for opening or closing the stationary contact and the moving contact, wherein the electromagnetic opening/closing device comprises: a detector configured to detect an opened or closed state of the stationary contact and the moving contact; a determination unit configured to determine presence or absence of malfunction based on a comparison between the opened or closed state of the stationary contact and the moving contact detected through the detector and an opened or closed state of the stationary contact and the moving contact corresponding to the exterior command; and an output unit configured to supply a signal representing a determination result determined by the determination unit to an external apparatus outside the electromagnetic opening/closing device.