Molded case circuit breaker field-installable accessories

Details Molded case circuit breaker field-installable accessories Molded case circuit breaker field-installable accessories

1991-02-11

1992-05-26

Picard, Leo P.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Tripping means

335 23, 335167, H01H 900

Patent

active

051172100

ABSTRACT:
Field-installable accessories are used within a thermal-magnetic industrial-rated circuit breaker. On such accessory in the form of a combined undervoltage release and shunt trip unit is field-installable within the circuit breaker cover. A bell alarm accessory unit can also be inserted within the circuit breaker cover either in combination with or apart from the undervoltage-shunt trip accessory unit.

REFERENCES:
patent: 2912544 (1959-11-01), Piteo, Jr. et al.
patent: 2938980 (1960-05-01), Jencks
patent: 4166260 (1979-08-01), Gillette
patent: 4754247 (1988-06-01), Raymont et al.
patent: 4788621 (1988-11-01), Russell et al.
patent: 4806893 (1989-02-01), Castonguay et al.
patent: 4939490 (1990-07-01), Bernier et al.

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