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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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5SY43406
5SY43406
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5SY43506
5SY43506
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5SY44168
5SY44168
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5SY44207
5SY44207
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5SY45028
5SY45028
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5SY46027
5SY46027
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5SY46107
5SY46107
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5SY63137
5SY63137
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5SY63157
5SY63157
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5SY63506
5SY63506
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5SY64047
5SY64047
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5SY65136
5SY65136
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5SY73327
5SY73327
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3VA1196-3EF32-0AA0
3VA1196-3EF32-0AA0
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032901
032901
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3RV20231KA10
3RV20231KA10
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3VA11104EE360AA0
3VA11104EE360AA0
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3VA11166EF320AA0
3VA11166EF320AA0
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3VA20635HL320AA0
3VA20635HL320AA0
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3VA51204EC310AA0
3VA51204EC310AA0
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3VA51306EF310AA0
3VA51306EF310AA0
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3VA62255JQ310AA0
3VA62255JQ310AA0
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3VA62255JQ410AA0
3VA62255JQ410AA0
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5SJ41027HG40
5SJ41027HG40
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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.