Disconnect switch with reset mechanism

Details Disconnect switch with reset mechanism Disconnect switch with reset mechanism

1977-03-01

1978-08-22

Harris, George

Electricity: electrothermally or thermally actuated switches

Electrothermally actuated switches

With longitudinally expansible solid element

337140, H01H 7118

Patent

active

041092260

ABSTRACT:
A disconnect switch or hot wire relay for use with a ground fault circuit interrupter in a power circuit to a load, such as an electric range, to provide ground fault protection for any circuit of the range. The switch has normally closed switch contacts, a biased actuator plunger for opening the contacts, a latching member for disabling the plunger, and an adjustable hot wire for releasing the latch and hence the plunger when the circuit is overloaded. The plunger of the switch is manually resettable from a remote position. The reset mechanism has an anti-tease or trip-free feature which prevents the operator from holding the disconnect contacts closed while a fault is present in the circuit.

REFERENCES:
patent: 3142737 (1964-07-01), Brackett
patent: 3176099 (1965-03-01), Bergsma
patent: 3514733 (1970-05-01), Staples
patent: 3864649 (1975-02-01), Doyle

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