Monitoring method for electromagnetic switching device

摘要

The electromagnetic switching device (1) has a contact bridge (4) for connecting an input contact (2) with an output contact (3), operated by a contact bridge drive (5), which moves it from a separation position into a contact closure position in response to a connection command. The input and output contacts are coupled to a monitoring circuit (6), evaluating the voltage across the contacts for indicating the correct operation of the contact bridge.