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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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E63-G20A
E63-G20A
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E63-G2A
E63-G2A
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E63-G32A
E63-G32A
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E63-G3A
E63-G3A
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E63-G40A
E63-G40A
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E63-G4A
E63-G4A
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E63-G50A
E63-G50A
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E7T45-G1A
E7T45-G1A
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E8-G1A
E8-G1A
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E81-C2A
E81-C2A
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E81-L6A
E81-L6A
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Eec Aeg
E81-U32A
E81-U32A
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Eec Aeg
E81S-L6A
E81S-L6A
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Eec Aeg
E81S-U25A
E81S-U25A
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Eec Aeg
E82-U20A
E82-U20A
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Eec Aeg
E82-U40A
E82-U40A
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Eec Aeg
E82S-L6A
E82S-L6A
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Eec Aeg
E82U6A
E82U6A
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$52.37
Eec Aeg
E83-C10
E83-C10
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Eec Aeg
E83-U16A
E83-U16A
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Eec Aeg
E83S-U25A
E83S-U25A
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Eec Aeg
E83S-U2A
E83S-U2A
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$55.04
Eec Aeg
E9-G4A
E9-G4A
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Eec Aeg
E91S UL C06
E91S UL C06
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$20.84
Eec Aeg
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.