Circuit breaker with dial indicator for magnetic trip level...

Details Circuit breaker with dial indicator for magnetic trip level... Circuit breaker with dial indicator for magnetic trip level...

H - Electricity

01

H

H01H 71/74 (2006.01) H01H 21/50 (2006.01)

Patent

CA 2316063

This concerns a molded case circuit breaker having separable main contacts and an operating mechanism utilized to cause the separable main contacts to open and close. A trip unit is provided to actuate the operating mechanism in desirable circumstances. The trip unit has a magnetic trip level adjustment dial, which has an adjustment face with a series of detents therein. The dial has a cam service, which interacts with internal portions of the trip unit to set or calibrate the level at which a magnetic trip actuation occurs. The aforementioned detent interacts with a spring loaded L-shaped member which fits into the casing of the trip unit along with the dial as a single unit.

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