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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
Amperage
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PLP34120U43AAB
PLP34120U43AAB
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1200
480
PLP34120U43AAC
PLP34120U43AAC
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Schneider Electric
1200
480
PLP34120U43ABC
PLP34120U43ABC
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Schneider Electric
1200
480
PLP34120U43ABD
PLP34120U43ABD
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Square D
1200
480
PLP34120U43AYP
PLP34120U43AYP
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Schneider Electric
1200
480
PLP34120U43BAA
PLP34120U43BAA
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Square D
1200
480
PLP34120U43BAB
PLP34120U43BAB
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Square D
1200
480
PLP34120U43BAC
PLP34120U43BAC
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Schneider Electric
1200
480
PLP34120U43BBC
PLP34120U43BBC
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Schneider Electric
1200
480
PLP34120U43BBD
PLP34120U43BBD
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Schneider Electric
1200
480
PLP34120U43BYP
PLP34120U43BYP
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Square D
1200
480
PLP34120U44AAA
PLP34120U44AAA
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Square D
1200
480
PLP34120U44AAB
PLP34120U44AAB
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Schneider Electric
1200
480
PLP34120U44AAC
PLP34120U44AAC
Limited Stock
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Schneider Electric
1200
480
PLP34120U44ABC
PLP34120U44ABC
Limited Stock
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Schneider Electric
1200
480
PLP34120U44ABD
PLP34120U44ABD
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Square D
1200
480
PLP34120U44AYP
PLP34120U44AYP
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Square D
1200
480
PLP34120U44BAA
PLP34120U44BAA
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Square D
1200
480
PLP34120U44BAB
PLP34120U44BAB
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Square D
1200
480
PLP34120U44BAC
PLP34120U44BAC
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Square D
1200
480
PLP34120U44BBC
PLP34120U44BBC
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Schneider Electric
1200
480
PLP34120U44BBD
PLP34120U44BBD
Limited Stock
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Schneider Electric
1200
480
PLP34120U44BYP
PLP34120U44BYP
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Square D
1200
480
PLP34120U63AE1AA
PLP34120U63AE1AA
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Square D
1200
480
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.