THERMAL RELAY Russian patent published in 2005 - IPC

FIELD: electrical and radio engineering; overtemperature protection of electric motors, domestic appliances, and other electrical apparatuses.

SUBSTANCE: proposed thermal relay has insulating case, fixed and movable contact holders, heat-sensing part made of material possessing shape memory effect, pusher, locking screw, and adjusting post. One of ends of heat-sensing part is attached to case and is bent in two points, ratio of bend radii being R₁/R₂ = 1/3; other end is attached to adjustment post mounted in case for displacement.

EFFECT: simplified design, enhanced system stiffness, facilitated setting control, enhanced reliability of relay.

1 cl, 2 dwg