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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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MG15016
MG15016
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Schneider Electric
MG15092
MG15092
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Schneider Electric
MG15102
MG15102
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Schneider Electric
MG15104
MG15104
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Schneider Electric
MG15105
MG15105
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Schneider Electric
MG15249
MG15249
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$23.19
Schneider Electric
MG15362
MG15362
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$84.49
Schneider Electric
MG15533
MG15533
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Schneider Electric
MG15619
MG15619
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Schneider Electric
MG15651
MG15651
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$9.12
Schneider Electric
MG16201
MG16201
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Schneider Electric
MG16204
MG16204
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Schneider Electric
MG16254
MG16254
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Schneider Electric
MG16261
MG16261
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Schneider Electric
MG16309
MG16309
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Schneider Electric
MG16334
MG16334
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Schneider Electric
MG17507
MG17507
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Schneider Electric
MG17571
MG17571
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Schneider Electric
MG17574
MG17574
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Schneider Electric
MG17589
MG17589
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Schneider Electric
MG17868
MG17868
In Stock
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$40.06
Schneider Electric
MG17937
MG17937
In Stock
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$81.47
Schneider Electric
MG18039
MG18039
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Schneider Electric
MG18286
MG18286
In Stock
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$143.43
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.