FAST PHASE-FAILURE RESPONSE THERMAL RELAY Russian patent published in 1997 - IPC

FIELD: electrical engineering; low-voltage equipment; overcurrent protective devices for electric motors. SUBSTANCE: thermal relay has case, thermoelectric elements, moving strips, lever discriminating difference in displacement of loose ends of thermoelectric elements joined with moving strips by means of two half-axles, lever transmitting displacement of the former lever to contact system; moving strips, whose quantity equals that of relay poles, are joined by means of slots to loose ends of thermoelectric elements; lever discriminating difference in displacement of loose ends of thermoelectric elements rests through one half-axle placed in its center on edge of respective slots of moving strips, and its other half-axle is built integral with one of its ends. EFFECT: enlarged functional capabilities. 7 dwg