Combined accessory and trip actuator unit for electronic circuit

Details Combined accessory and trip actuator unit for electronic circuit Combined accessory and trip actuator unit for electronic circuit

1985-07-29

1987-02-03

Stephan, Steven L.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335180, 335268, H01H 8312

Patent

active

046411178

ABSTRACT:
A modified electronic trip unit actuator provides remote trip and undervoltage release function without impairing the actuator reliability. One embodiment replaces the permanent magnet of a flux shift trip unit actuator with an undervoltage release coil for undervoltage facility and a further embodiment uses the combination of a permanent magnet with a shunt trip coil for remote tripping function.

REFERENCES:
patent: 3088009 (1963-04-01), Perez del Valle
patent: 3248499 (1966-04-01), Young
patent: 3293577 (1966-12-01), Kiesel et al.
patent: 3693122 (1972-09-01), Willard
patent: 3755766 (1973-08-01), Read, Jr.
patent: 3783423 (1974-01-01), Mater et al.
patent: 3886507 (1975-05-01), Johnston et al.
patent: 4013926 (1977-03-01), Lang et al.
patent: 4097831 (1978-06-01), Jencks et al.
patent: 4489295 (1984-12-01), Altenhof, Jr. et al.

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