Thermally-sensible overcurrent protective relay including contac

Details Thermally-sensible overcurrent protective relay including contac Thermally-sensible overcurrent protective relay including contac

1987-10-16

1989-02-28

Broome, H.

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With bimetallic elements

337 45, 337 53, 337 59, H01H 6100, H01H 7116

Patent

active

048089613

ABSTRACT:
In an overcurrent protective relay thermally operable by a bimetal, a movable contact mechanism is employed by utilizing a snap inversion mechanism. A normally-closed contact is employed with having an overtravel to achieve the reliable contacting. A manually resettable lever is also employed to open the normally-closed contact after the overcurrent protective relay has been actuated.

REFERENCES:
patent: 4635020 (1987-01-01), Sako
patent: 4652847 (1987-03-01), Sako

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