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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
430230
430230
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General Electric
32
690
430232
430232
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General Electric
40
690
430241
430241
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General Electric
50
690
430276
430276
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General Electric
80
690
430279
430279
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General Electric
100
690
430282
430282
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General Electric
125
690
430299
430299
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General Electric
80
690
430302
430302
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General Electric
100
690
430305
430305
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General Electric
125
690
430318
430318
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General Electric
80
690
430321
430321
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General Electric
100
690
430338
430338
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General Electric
80
690
430341
430341
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General Electric
100
690
430344
430344
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General Electric
125
690
430357
430357
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General Electric
80
690
430360
430360
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General Electric
100
690
430363
430363
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General Electric
125
690
430376
430376
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General Electric
80
690
430379
430379
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General Electric
100
690
430396
430396
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General Electric
80
690
430399
430399
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General Electric
100
690
430402
430402
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General Electric
125
690
430415
430415
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General Electric
80
690
430418
430418
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General Electric
100
690
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.