Thermal overload relay

Details Thermal overload relay Thermal overload relay

1975-12-23

1977-09-06

Harris, George

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With bimetallic elements

337 78, H01H 7116

Patent

active

040471403

ABSTRACT:
A thermal overload relay characterized by a plurality of pole units, stationary and movable contacts, a slide within the housing for moving the movable contact between open and closed positions, a movable contact mounting arm on the slide, latch means on the slide for latching the slide in one of said positions, resetting means for moving the slides to the latched position, each pole comprising a bimetal element responsive to current flow to effect heating thereof, a crossbar associated with the bimetal element to effect unlatching of the latch means, and the housing being an integral single unit into which the several foregoing elements are inserted in place.

REFERENCES:
patent: 3108165 (1963-10-01), Cinibulk
patent: 3185793 (1965-05-01), Eilenberger
patent: 3792401 (1974-02-01), Anderson

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