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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
2602D84G38
2602D84G38
In Stock
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$190.02
Eaton
278610
278610
Limited Stock
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Eaton
278666
278666
Limited Stock
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Eaton
278760
278760
In Stock
From
$640.29
Eaton
2C12790G48 (SRD)
2C12790G48 (SRD)
In Stock
From
$818.10
Eaton
2T061
2T061
Limited Stock
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Eaton
2T101
2T101
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Eaton
2T161
2T161
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Eaton
2T501
2T501
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Eaton
315C148G19
315C148G19
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Westinghouse
315C148G22
315C148G22
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Westinghouse
315C148G23
315C148G23
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Westinghouse
315C148G24
315C148G24
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Westinghouse
321QEB
321QEB
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Eaton
3A16274G31
3A16274G31
In Stock
From
$107.01
Eaton
3T062
3T062
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Eaton
3T203
3T203
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Eaton
3T323
3T323
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Eaton
3T401
3T401
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Eaton
3T403
3T403
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Eaton
3T501
3T501
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Eaton
66D2135G01
66D2135G01
Limited Stock
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Eaton
AD1S-B2-AO-DN-H-A-61-2-3
AD1S-B2-AO-DN-H-A-61-2-3
In Stock
From
$61.04
Eaton
AD1S-Y59-10
AD1S-Y59-10
In Stock
From
$32.15
Eaton
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.