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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
MEL226LSG
MEL226LSG
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250
600
MEL226LSI
MEL226LSI
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250
600
MEL226LSIG
MEL226LSIG
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250
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MEL236LIG
MEL236LIG
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250
600
MEL236LSG
MEL236LSG
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250
600
MEL236LSI
MEL236LSI
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250
600
MEL236LSIG
MEL236LSIG
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600
MEL426LI
MEL426LI
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400
600
MEL426LIG
MEL426LIG
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400
600
MEL426LS
MEL426LS
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400
600
MEL426LSG
MEL426LSG
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400
600
MEL426LSI
MEL426LSI
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400
600
MEL426LSIG
MEL426LSIG
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400
600
MEL436LI
MEL436LI
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400
600
MELG226LI
MELG226LI
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250
600
MELG226LS
MELG226LS
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Square D
250
600
MELG226LSI
MELG226LSI
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Square D
250
600
MELG236LI
MELG236LI
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Square D
250
600
MELG236LS
MELG236LS
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250
600
MELG236LSI
MELG236LSI
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Square D
250
600
MELG426LI
MELG426LI
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Square D
400
600
MELG426LS
MELG426LS
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Square D
400
600
MELG426LSI
MELG426LSI
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Square D
400
600
MELG436LI
MELG436LI
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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.