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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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MG25423
MG25423
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$74.44
Schneider Electric
MG25426
MG25426
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Schneider Electric
MG25432
MG25432
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Schneider Electric
MG25436
MG25436
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$175.88
Schneider Electric
MG25437
MG25437
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$118.29
Schneider Electric
MG25445
MG25445
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Schneider Electric
MG25454
MG25454
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Schneider Electric
MG25589
MG25589
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Schneider Electric
MG25596
MG25596
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Schneider Electric
MG25600
MG25600
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Schneider Electric
MG25611
MG25611
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Schneider Electric
MG25617
MG25617
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Schneider Electric
MG25618
MG25618
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Schneider Electric
MG25620
MG25620
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Schneider Electric
MG25621
MG25621
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Schneider Electric
MG25624
MG25624
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Schneider Electric
MG25639
MG25639
In Stock
From
$6.04
Schneider Electric
MG25642
MG25642
In Stock
From
$37.24
Schneider Electric
MG25643
MG25643
In Stock
From
$17.67
Schneider Electric
MG25647
MG25647
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Schneider Electric
MG25651
MG25651
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Schneider Electric
MG25652
MG25652
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Schneider Electric
MG25654
MG25654
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Schneider Electric
MG25657
MG25657
In Stock
From
$31.15
Schneider Electric
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.