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Molded Case Circuit Breaker

For circuit breaker systems in commercial and industrial facilities, molded case circuit breakers are among the most widely used components for reliable overcurrent protection and electrical distribution. Molded case circuit breakers provide automatic circuit interruption during overload or short circuit conditions, protecting electrical systems and equipment from damage while enabling manual switching control. Electrical.com carries an extensive selection of molded case circuit breakers from all major manufacturers, including new, used, surplus, and re-certified options. These components are designed to meet the diverse needs of commercial buildings, manufacturing facilities, data centers, and industrial power distribution applications.
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CHMP150U4C
CHMP150U4C
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Westinghouse
F3020P
F3020P
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F3040P
F3040P
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Westinghouse
LD3300F
LD3300F
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Eaton
LD3400F
LD3400F
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Eaton
LD3450F
LD3450F
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Eaton
AQBA101
AQBA101
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Cutler Hammer
HLA2G00F
HLA2G00F
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Westinghouse
HLD3250F
HLD3250F
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Eaton
HLD3300F
HLD3300F
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Eaton
HLD3500F
HLD3500F
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Eaton
CATHMCP400X5W
CATHMCP400X5W
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Westinghouse
LA3400FSN
LA3400FSN
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Westinghouse
RHFA2015 1375DB5G02
RHFA2015 1375DB5G02
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Westinghouse
RHFA2015-15A
RHFA2015-15A
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Westinghouse
BA3050
BA3050
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Cutler Hammer
458D732G08
458D732G08
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Eaton
5681D91G36
5681D91G36
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Westinghouse
9E1426
9E1426
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Westinghouse
Popular Molded Case Circuit Breaker Manufacturers

Electrical.com stocks the largest inventory of molded case circuit breakers in the world, with over 1 million square feet of new, used, surplus, and re-certified MCCBs available for immediate shipment. From standard thermal-magnetic breakers to electronic trip units across all amperage ratings, we have what you need when others say no. Our comprehensive molded case circuit breaker inventory spans all voltage and current ratings, frame sizes, and interrupting capacities from all major manufacturers including current production and discontinued models from legacy suppliers. Available in new factory condition, surplus stock, and re-certified options‚ All backed by our standard 2-year Electrical.com warranty. Our molded case circuit breakers serve critical applications across commercial buildings, industrial facilities, manufacturing plants, data centers, healthcare facilities, distribution panels, motor control centers, switchboards, and power distribution systems.


Whether you're maintaining legacy equipment with obsolete MCCB models or sourcing current production breakers for new installations and retrofits, our 40+ warehouse locations across the US and Canada ensure rapid delivery to minimize your downtime. Need molded case circuit breakers now? Call 877-999-7077 or email [email protected]. With same-day shipping available and the right parts ready to ship from our nearest warehouse location, Electrical.com gets your operations back online fast. We can say yes when others have to say no.