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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
Voltage
MELG436LS
MELG436LS
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400
600
MELG436LSI
MELG436LSI
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400
600
MEP226LI
MEP226LI
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250
600
MEP226LIG
MEP226LIG
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250
600
MEP226LS
MEP226LS
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600
MEP226LSG
MEP226LSG
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250
600
MEP226LSI
MEP226LSI
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600
MEP226LSIG
MEP226LSIG
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250
600
MEP236LI
MEP236LI
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250
600
MEP236LIG
MEP236LIG
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250
600
MEP236LS
MEP236LS
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250
600
MEP236LSG
MEP236LSG
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250
600
MEP236LSI
MEP236LSI
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Square D
250
600
MEP236LSIG
MEP236LSIG
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Square D
250
600
MEP426LI
MEP426LI
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400
600
MEP426LIG
MEP426LIG
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400
600
MEP426LS
MEP426LS
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Square D
400
600
MEP426LSG
MEP426LSG
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Square D
400
600
MEP426LSI
MEP426LSI
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Square D
400
600
MEP426LSIG
MEP426LSIG
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Square D
400
600
MEP436LI
MEP436LI
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Square D
400
600
MEP436LIG
MEP436LIG
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From
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Square D
400
600
MEP436LS
MEP436LS
Limited Stock
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Square D
400
600
MEP436LSG
MEP436LSG
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From
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Square D
400
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.