Circuit interrupter with undervoltage trip mechanism

Details Circuit interrupter with undervoltage trip mechanism Circuit interrupter with undervoltage trip mechanism

1987-07-24

1988-05-10

Broome, H.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

337173, H01H 8317, H01H 7300

Patent

active

047438762

ABSTRACT:
A circuit breaker characterized by a voltage-responsive device having an electromagnet including an armature. A linkage connects the armature to the trip latch of the circuit breaker in order to open the circuit breaker contacts when a voltage occurs that is less than a predetermined voltage value. Under normal operating conditions, when the contacts are closed, the armature is retained in place by an electromagnetic force, but is biased away therefrom when the voltage drops below that voltage value.

REFERENCES:
patent: 3533024 (1970-10-01), Heintz
patent: 3590192 (1971-06-01), Bould
patent: 3689721 (1972-07-01), McGuffie
patent: 3750059 (1973-07-01), Patel
patent: 3760307 (1973-09-01), Patel

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