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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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MG19123
MG19123
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Schneider Electric
MG19126
MG19126
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Schneider Electric
MG19146
MG19146
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Schneider Electric
MG19173
MG19173
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Schneider Electric
MG19176
MG19176
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Schneider Electric
MG19263
MG19263
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$114.14
Schneider Electric
MG19264
MG19264
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$91.29
Schneider Electric
MG19268
MG19268
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$56.75
Schneider Electric
MG19271
MG19271
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Schneider Electric
MG19532
MG19532
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Schneider Electric
MG19666
MG19666
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Schneider Electric
MG19668
MG19668
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Schneider Electric
MG19774
MG19774
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$109.24
Schneider Electric
MG19791
MG19791
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Schneider Electric
MG19794
MG19794
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Schneider Electric
MG20072
MG20072
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Schneider Electric
MG20124
MG20124
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$75.69
Schneider Electric
MG20368
MG20368
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Schneider Electric
MG20429
MG20429
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Schneider Electric
MG20435
MG20435
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Schneider Electric
MG20436
MG20436
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Schneider Electric
MG20457
MG20457
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Schneider Electric
MG20471
MG20471
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Schneider Electric
MG20531
MG20531
In Stock
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$56.66
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.