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US 4,975,667 AGranted
Molded case circuit breaker with increased ampere rating
AssigneeGeneral Electric Company
InventorsRoger J. Morgan, Thomas F. Papallo, Jr., Irenaeus S. Panus, Ronald G. Pekrul
Life of this patent
Estimating the term…
Abstract
An electric circuit breaker enclosure includes a pultruded glass-filled plastic inset for added strength to the line and load terminal straps. The line and load terminal straps are fastened to the inset on the side and receive the corresponding line and load terminal cables on an opposite side thereof. The inset allows connection within a high-rated electrical power distribution circuit without damage to the circuit breaker case upon short circuit interruption.
Claims9
A molded case circuit breaker comprising:
- a plastic case and cover;
- a pair of separable contacts within said case and arranged for separation by automatic operation of a spring-powered operating mechanism to interrupt circuit current through said contacts upon occurrence of an overcurrent condition;
- a plurality of load lugs arranged at a load end of said case;
- a corresponding plurality of line lugs arranged at a line end of said case;
- and
- a planar glass-filled plastic inset fastened to said case subjacent said load lugs.
3 more elements
Dependencies are inferred from the claim text.