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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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MB30-CS3P7.1AW
MB30-CS3P7.1AW
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Mitsubishi
MMP-T32 2.5A
MMP-T32 2.5A
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Mitsubishi
NF100-SWU3060
NF100-SWU3060
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Mitsubishi
NF125-SGV4P90.125A
NF125-SGV4P90.125A
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Mitsubishi
NF125-SV
NF125-SV
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Mitsubishi
NF125-SVU3060
NF125-SVU3060
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Mitsubishi
NF250-HVU3P150A1L
NF250-HVU3P150A1L
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Mitsubishi
NF30-FA-2P-15A
NF30-FA-2P-15A
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Mitsubishi
NF30-SS-3P-5A
NF30-SS-3P-5A
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Mitsubishi
NF400-CP-3P-350A
NF400-CP-3P-350A
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Mitsubishi
NF50-SP-3P-10A
NF50-SP-3P-10A
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Mitsubishi
NF50-SVFU3P30AY
NF50-SVFU3P30AY
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Mitsubishi
NF63-CVF2P50A
NF63-CVF2P50A
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Mitsubishi
NV250-SVU3225
NV250-SVU3225
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Mitsubishi
NV63-CV3P50A100
NV63-CV3P50A100
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Mitsubishi
DSN63-SW
DSN63-SW
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Mitsubishi
NF-30CS
NF-30CS
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Mitsubishi
NF100-CVFU3P60A
NF100-CVFU3P60A
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Mitsubishi
NF125-CV
NF125-CV
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Mitsubishi
NF125-SVU3030
NF125-SVU3030
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Mitsubishi
NF225-CWU3P125A
NF225-CWU3P125A
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Mitsubishi
NF250-CV3P
NF250-CV3P
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Mitsubishi
NF30-CS.2P
NF30-CS.2P
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Mitsubishi
NF30-FAU
NF30-FAU
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Mitsubishi
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.