Most manufacturers recommend that if a molded-case circuit breaker has not been operated, opened or closed within six months time, it should be removed from service, and the mechanical operation and the tripping mechanism manually exercised.
Branch circuit protective devices typically fall into two categories, molded-case circuit breakers listed to UL489 or fuses listed to UL248.
Most thermal-magnetic molded-case circuit breakers are not listed and marked as current limiting.
A UL489 molded-case circuit breaker
provides branch-circuit protection in the mechanically interlocked receptacles, eliminating the need to stock fuses.
Customers can access the tool on Eaton's PowerEdge mobile app and by scanning information from the product label with the click of a button, detect if Eaton's molded-case circuit breakers
, up to 400 amperes, are counterfeit.
Industrial automation customers worldwide can now reap the business efficiencies of standardizing on the new global line of molded-case circuit breakers, and control-circuit and load-protection devices from Rockwell Automation.
The Allen-Bradley Bulletin 140G molded-case circuit breakers protect against overload, short circuit and ground-fault conditions.
A design for Eaton Series G L-Frame and Series C K-Frame molded-case circuit breakers