Compact molded case circuit breaker with increased ampere...

Details Compact molded case circuit breaker with increased ampere... Compact molded case circuit breaker with increased ampere...

H - Electricity

01

H

H01H 73/02 (2006.01) H01H 9/00 (2006.01) H01H 71/04 (2006.01) H01H 71/52 (2006.01) H01H 73/12 (2006.01) H01H 73/18 (2006.01) H01H 9/34 (2006.01) H01H 71/08 (2006.01)

Patent

CA 2042187

A compact molded case circuit breaker with increased ampere rating employs a latch assembly for maintaining the circuit breaker operating mechanism in a closed condition against a pair of powerful operating springs. To increase the mechanical ad- vantage required to move the operating handle against the springs, a retractable handle extender is attached to the handle. For higher-rated circuit applications, a lug cover ex- tension is added to the line end of the breaker to assist in ex- tinguishing the intense arc that occurs during circuit interrup- tion and to protect the line lugs from inter-phasal circuit faults. A visual access slot is arranged next to the circuit breaker handle to ascertain and verify the condition of the cir- cuit breaker contacts.

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