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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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MG18374
MG18374
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Schneider Electric
MG18379
MG18379
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Schneider Electric
MG18457
MG18457
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Schneider Electric
MG18510
MG18510
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Schneider Electric
MG18514
MG18514
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Schneider Electric
MG18609
MG18609
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Schneider Electric
MG18649
MG18649
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Schneider Electric
MG18650
MG18650
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Schneider Electric
MG18651
MG18651
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Schneider Electric
MG18653
MG18653
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Schneider Electric
MG18736
MG18736
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Schneider Electric
MG18804
MG18804
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Schneider Electric
MG18810
MG18810
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Schneider Electric
MG18813
MG18813
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Schneider Electric
MG18868
MG18868
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Schneider Electric
MG18874
MG18874
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Schneider Electric
MG18879
MG18879
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Schneider Electric
MG18884
MG18884
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Schneider Electric
MG18885
MG18885
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Schneider Electric
MG19000
MG19000
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Schneider Electric
MG19005
MG19005
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Schneider Electric
MG19037
MG19037
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Schneider Electric
MG19046
MG19046
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Schneider Electric
MG19121
MG19121
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Schneider Electric
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.