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US 4,794,356 AGranted
Molded case circuit breaker auxiliary switch unit
AssigneeGeneral Electric Company
InventorsYuet-Ying Yu, Robert A. Morris, Paul T. Rajotte, Lee A. Wambolt
Life of this patent
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Abstract
An integrated protection unit is a circuit breaker which includes basic overcurrent protection facility along with selective electrical accessories. A molded plastic accessory access cover secured to the integrated protection unit cover protects the accessory components contained within the circuit breaker cover from the environment. An auxiliary switch unit is one such accessory component which can be field-installed without affecting the integrity of the circuit breaker overcurrent protection components.
Claims9
Molded case circuit breaker and accessory comprising:
- a molded plastic circuit breaker cover and case, said cover defining an enclosure space;
- a pair of separable contacts within said case having closed and open conditions;
- a circuit breaker operating mechanism within said case and associated with said contacts and opening said contacts upon the occurrence of a current through said contacts in excess of a predetermined current;
- electromagnetic actuator means within said circuit breaker cover enclosure space associated with said circuit breaker operating mechanism and articulating said operating mechanism to open said contacts upon the occurrence of said excess current;
- and
- an accessory unit substantially within said circuit breaker cover enclosure space proximate said operating mechanism, an operating lever on said accessory unit interacting with means on said operating mechanism and having means providing remote indication of said closed and open conditions of said contacts.
3 more elements
Dependencies are inferred from the claim text.