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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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MG15093
MG15093
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Schneider Electric
MG15593
MG15593
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Schneider Electric
MG16912
MG16912
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Schneider Electric
MG18367
MG18367
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$528.51
Schneider Electric
MG18420
MG18420
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Schneider Electric
MG18425
MG18425
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Schneider Electric
MG18500
MG18500
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Schneider Electric
MG20370
MG20370
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Schneider Electric
MG20386
MG20386
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Schneider Electric
MG20534
MG20534
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Schneider Electric
MG20535
MG20535
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Schneider Electric
MG20541
MG20541
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Schneider Electric
MG20889
MG20889
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Schneider Electric
MG20894
MG20894
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Schneider Electric
MG20910
MG20910
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Schneider Electric
MG21324
MG21324
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Schneider Electric
MG21326
MG21326
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Schneider Electric
MG21328
MG21328
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Schneider Electric
MG21348
MG21348
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Schneider Electric
MG21670
MG21670
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Schneider Electric
MG23532
MG23532
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Schneider Electric
MG23538
MG23538
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Schneider Electric
MG23691
MG23691
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Schneider Electric
MG23968
MG23968
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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.