Molded case circuit breaker with viewing window and sliding...

Details Molded case circuit breaker with viewing window and sliding... Molded case circuit breaker with viewing window and sliding...

H - Electricity

01

H

306/286

H01H 73/12 (2006.01) H01H 71/04 (2006.01)

Patent

CA 1329821

ABSTRACT OF THE DISCLOSURE A molded case circuit breaker includes a clear viewing window through its top cover to enable the position of its internally disposed separable electrical contacts to be externally visually dis- cerned. A manually engagable handle extending through an opening formed in the top cover of the molded case of the circuit breaker has an electrical- ly insulating strip or barrier secured thereto and movable therewith for covering the clear viewing win- dow when the separable contacts are in their CLOSED position to prevent smoke and other arc products resulting from circuit breaker interruptions from obstructing the clear viewing window. The viewing window may be inserted in the top cover during the molding process or may be subsequently disposed in the top cover in the form of an insert fixedly secured thereto.

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