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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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M9A26929
M9A26929
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Schneider Electric
M9C01101
M9C01101
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$37.71
Schneider Electric
M9F11163
M9F11163
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Schneider Electric
M9F11220
M9F11220
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Schneider Electric
M9F11240
M9F11240
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Schneider Electric
M9F11304
M9F11304
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Schneider Electric
M9F12104
M9F12104
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Schneider Electric
M9F12110
M9F12110
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Schneider Electric
M9F12120
M9F12120
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Schneider Electric
M9F12125
M9F12125
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Schneider Electric
M9F12132
M9F12132
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Schneider Electric
M9F12140
M9F12140
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Schneider Electric
M9F12201
M9F12201
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Schneider Electric
M9F12204
M9F12204
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Schneider Electric
M9F12225
M9F12225
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Schneider Electric
M9F12240
M9F12240
In Stock
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$134.62
Schneider Electric
M9F12306
M9F12306
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Schneider Electric
M9F14102
M9F14102
In Stock
From
$86.12
Schneider Electric
M9F14106
M9F14106
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$120.77
Schneider Electric
M9F14120
M9F14120
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Schneider Electric
M9F15425
M9F15425
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Schneider Electric
M9F17306
M9F17306
In Stock
From
$305.34
Schneider Electric
M9F17310
M9F17310
In Stock
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$294.91
Schneider Electric
M9F21163
M9F21163
In Stock
From
$105.45
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.