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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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M9F11203
M9F11203
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Schneider Electric
M9F11332
M9F11332
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Schneider Electric
M9F15225
M9F15225
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Schneider Electric
M9F22108
M9F22108
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Schneider Electric
M9F23105
M9F23105
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Schneider Electric
M9F42263
M9F42263
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Schneider Electric
M9F52102
M9F52102
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Schneider Electric
M9F52215
M9F52215
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Schneider Electric
M9U21101
M9U21101
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Schneider Electric
M9U21110
M9U21110
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Schneider Electric
MA-31000-F
MA-31000-F
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Schneider Electric
MA2-B-34-610-1-A34-B-C
MA2-B-34-610-1-A34-B-C
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Carling Technologies
MA32U
MA32U
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Abl Sursum
MA4.0UM
MA4.0UM
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Abl Sursum
MB1-B-34-615-1-A27-B-C
MB1-B-34-615-1-A27-B-C
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Carling Technologies
MB30-CS10
MB30-CS10
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Mitsubishi
MBH140
MBH140
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Eaton
MBKED3100A
MBKED3100A
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Siemens
MBS25N-040
MBS25N-040
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Eec Aeg
MBS32SG025
MBS32SG025
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Eec Aeg
MC-104A
MC-104A
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Hager
MCB-3D63
MCB-3D63
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Protek
MCH216
MCH216
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Eaton
MCP03150CA3
MCP03150CA3
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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.