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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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1620-3-30A
1620-3-30A
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Eta Engineering Technology
1620-3-5A
1620-3-5A
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1620-3H-15A
1620-3H-15A
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Eta Engineering Technology
1658-G21-00-P10-055800-8A
1658-G21-00-P10-055800-8A
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Eta Engineering Technology
1658-G21-01-P10-10A
1658-G21-01-P10-10A
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Eta Engineering Technology
1658-G21-01-P10-30A
1658-G21-01-P10-30A
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Eta Engineering Technology
1658-G21-01-P10-5A
1658-G21-01-P10-5A
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Eta Engineering Technology
1658-G21-02-P10-055800-12A
1658-G21-02-P10-055800-12A
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Eta Engineering Technology
1658-G21-02-P10-055800-8A
1658-G21-02-P10-055800-8A
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Eta Engineering Technology
1658-G21-09-P10-25A
1658-G21-09-P10-25A
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Eta Engineering Technology
1658-G21-09-P10-7A
1658-G21-09-P10-7A
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Eta Engineering Technology
1658-G21-09-P10-8A
1658-G21-09-P10-8A
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Eta Engineering Technology
1658-G41-02-P10-8A
1658-G41-02-P10-8A
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Eta Engineering Technology
192A7029P29
192A7029P29
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General Electric
1B2UR
1B2UR
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Altech Corp
1B3UR
1B3UR
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Altech Corp
1B5UR
1B5UR
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Altech Corp
1BU15R
1BU15R
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Altech Corp
1BU3R
1BU3R
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Altech Corp
1C15DL
1C15DL
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Altech Corp
1C2UR
1C2UR
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Altech Corp
1C4UR
1C4UR
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Altech Corp
1D20UR
1D20UR
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Altech Corp
1D2UR
1D2UR
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Altech Corp
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.