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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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Manufacturer
DSN63-SW
DSN63-SW
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Mitsubishi
EA1-X0-18-521-2DA-DB
EA1-X0-18-521-2DA-DB
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Carling Technologies
EA203A-175
EA203A-175
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Fuji Electric
EA203B/200
EA203B/200
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Fuji Electric
EA203B200M110
EA203B200M110
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Fuji Electric
EA3-B0-22-660-22A-CB
EA3-B0-22-660-22A-CB
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Carling Technologies
EA33M/16
EA33M/16
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Fuji Electric
EA403B/300
EA403B/300
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Fuji Electric
EA53B-30A
EA53B-30A
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Fuji Electric
EA53B/50
EA53B/50
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Fuji Electric
EA53C-50-CE
EA53C-50-CE
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Fuji Electric
EA63
EA63
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Fuji Electric
ECP 10-0912020
ECP 10-0912020
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Phoenix Contact
ED3C070L
ED3C070L
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Us Breaker Inc
EG103C
EG103C
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Fuji Electric
EG33AC EB3AEAC-010B
EG33AC EB3AEAC-010B
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Fuji Electric
EG63B
EG63B
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Fuji Electric
EHD3015LA02
EHD3015LA02
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Westinghouse
EM250 764003
EM250 764003
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General Electric
EP62ULD6
EP62ULD6
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General Electric
ESB23060L
ESB23060L
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ABB
ESR10-NC2A4HB-00-D1-10A
ESR10-NC2A4HB-00-D1-10A
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Eta Engineering Technology
ESS20-003-DC24V-10A
ESS20-003-DC24V-10A
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E-T-A Circuit Breakers
EW125JAG
EW125JAG
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Fuji 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.