ELECTROMAGNETIC ACTUATOR WITH UNDER VOLTAGE RELEASE

摘要

An electromagnetic actuator has a yoke (9) for guiding a magnetic flux, and a holding plate (6) attached to an actuating member (1), the holding plate (6) and yoke (9) forming a first magnetic circuit. Furthermore a magnetic flux generation device is provided for generating a magnetic flux in the first magnetic circuit. The magnetic flux generation device comprises an under voltage release coil (5) electrically connected to an auxiliary voltage source representing the value of a voltage to be monitored.