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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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NRAN3100F
NRAN3100F
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IDEC
NRAS3100-10A-AA
NRAS3100-10A-AA
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IDEC
NRC110-3A-AD
NRC110-3A-AD
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IDEC
NRF110-15A
NRF110-15A
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IDEC
NRF211-5A
NRF211-5A
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IDEC
NS100N TM40D 4P4D
NS100N TM40D 4P4D
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Schneider Electric
NV250-SVU3225
NV250-SVU3225
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Mitsubishi
NV63-CV3P50A100
NV63-CV3P50A100
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Mitsubishi
NXB-63-C20-1P
NXB-63-C20-1P
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Chint
NXB-63-D63-3P
NXB-63-D63-3P
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Chint
NZM6-63/ZM6A-50-NA
NZM6-63/ZM6A-50-NA
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Eaton
P1MBUH2PC03
P1MBUH2PC03
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Lovato
PDQ-B-26-650-G-2A2-1-U
PDQ-B-26-650-G-2A2-1-U
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Carling Technologies
PKS6-10/1N/C/003
PKS6-10/1N/C/003
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Eaton
PKZM0-0,6-NA
PKZM0-0,6-NA
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Eaton
PKZM01-1,6
PKZM01-1,6
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Eaton
PLSM-C1/3-MW
PLSM-C1/3-MW
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Eaton
PLU702M-K50
PLU702M-K50
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ABB
PR21-62F-21.0A-35259-8
PR21-62F-21.0A-35259-8
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Sensata Technologies
QD150
QD150
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Siemens
QF-3-19-DM-1-40
QF-3-19-DM-1-40
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CBI
QL-1-13-DM-3-02
QL-1-13-DM-3-02
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CBI
QL-1-13-DM-3-03
QL-1-13-DM-3-03
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CBI
QL-1-13-DM-9-15
QL-1-13-DM-9-15
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CBI
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.