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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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Part Number
PRICE
Manufacturer
Amperage
Voltage
MJA264505SC
MJA264505SC
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Square D
450
600
MJA264505SD
MJA264505SD
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Schneider Electric
450
600
MJA264505SH
MJA264505SH
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Schneider Electric
450
600
MJA264505SK
MJA264505SK
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Schneider Electric
450
600
MJA264505SL
MJA264505SL
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Schneider Electric
450
600
MJA264505SN
MJA264505SN
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Schneider Electric
450
600
MJA264505UA
MJA264505UA
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Schneider Electric
450
600
MJA264505UC
MJA264505UC
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Schneider Electric
450
600
MJA264505UH
MJA264505UH
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Square D
450
600
MJA264505UK
MJA264505UK
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Square D
450
600
MJA264505UL
MJA264505UL
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Schneider Electric
450
600
MJA264505YP
MJA264505YP
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Square D
450
600
MJA265002AA
MJA265002AA
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Schneider Electric
500
600
MJA265002AB
MJA265002AB
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Schneider Electric
500
600
MJA265002AC
MJA265002AC
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Square D
500
600
MJA265002SA
MJA265002SA
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Square D
500
600
MJA265002SC
MJA265002SC
Limited Stock
From
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Square D
500
600
MJA265002SD
MJA265002SD
Limited Stock
From
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Schneider Electric
500
600
MJA265002SH
MJA265002SH
Limited Stock
From
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Square D
500
600
MJA265002SK
MJA265002SK
Limited Stock
From
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Schneider Electric
500
600
MJA265002SL
MJA265002SL
Limited Stock
From
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Schneider Electric
500
600
MJA265002SN
MJA265002SN
Limited Stock
From
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Schneider Electric
500
600
MJA265002UA
MJA265002UA
Limited Stock
From
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Square D
500
600
MJA265002UC
MJA265002UC
Limited Stock
From
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Square D
500
600
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.