FIELD: electrical engineering; automatic-control, remote-control and remote-signalling systems. SUBSTANCE: three-legged relay core has yoke sections and leg sections; one of legs carries control winding connected to DC control signal source and other one carries auxiliary winding connected to auxiliary AC power supply; third leg mounts output winding; permanent magnet is placed between opposite sections of core yoke. EFFECT: improved reliability of relay due to elimination of its false operation in response to reverse-polarity signal (in case of open circuit in auxiliary-winding power circuit or polarity reversal in auxiliary-winding supply voltage, and also due to dispensing with movable parts and their hinged joints in really design. 1 dwg
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