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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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AP17-1R-72-103
AP17-1R-72-103
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AP17-1R-72-252
AP17-1R-72-252
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AP3-297-1
AP3-297-1
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AP6-1-51-203
AP6-1-51-203
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AP6-1-51-252
AP6-1-51-252
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AP6-1-51-702
AP6-1-51-702
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Sensata Technologies
AP6-1-51F-302
AP6-1-51F-302
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AP6-1-52-123
AP6-1-52-123
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AP6-1-52-203
AP6-1-52-203
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Sensata Technologies
AP6-1-60-103
AP6-1-60-103
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Sensata Technologies
AP6-1-61-202
AP6-1-61-202
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Sensata Technologies
AP6-1-61-502
AP6-1-61-502
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Sensata Technologies
AP6-7062-215
AP6-7062-215
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Sensata Technologies
AP6-7062-225
AP6-7062-225
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Sensata Technologies
AP6-7062-230
AP6-7062-230
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AP6-7062-231
AP6-7062-231
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AP6-7062-240
AP6-7062-240
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Sensata Technologies
AP6-7062-258
AP6-7062-258
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Sensata Technologies
AP7-1-42-103
AP7-1-42-103
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AP7-1-51-123
AP7-1-51-123
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Sensata Technologies
AP7-1-51-153
AP7-1-51-153
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Sensata Technologies
AP7-1-51-252
AP7-1-51-252
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Sensata Technologies
AP7-1-51-601
AP7-1-51-601
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Sensata Technologies
AP7-1-51-702
AP7-1-51-702
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Sensata Technologies
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.