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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
QFP24-175-2
QFP24-175-2
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Challenger
QFP24-225-2
QFP24-225-2
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Challenger
QO215GF
QO215GF
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Square D
QO230GF
QO230GF
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Square D
QO240GF
QO240GF
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Square D
QO250GF
QO250GF
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Square D
QOM225VH
QOM225VH
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Square D
QOU3305283
QOU3305283
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Schneider Electric
RFJ3B070
RFJ3B070
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Miami Breaker
RFJ3B090
RFJ3B090
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Miami Breaker
RFJ3B250
RFJ3B250
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Miami Breaker
RHE3B020
RHE3B020
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Miami Breaker
RHE3B070
RHE3B070
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Miami Breaker
SLG
SLG
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Siemens
SSF2G5X2N000000
SSF2G5X2N000000
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General Electric
SSF6G9X25000000
SSF6G9X25000000
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General Electric
TB24-5
TB24-5
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Thomas & Betts
THQD32150ST1
THQD32150ST1
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General Electric
140U-H2C3-C50-A
140U-H2C3-C50-A
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Allen-Bradley
1600-159-150
1600-159-150
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Mechanical Products
219-3-22052-05
219-3-22052-05
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Sensata Technologies
219-3-29733-08
219-3-29733-08
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Sensata Technologies
3RV1912-1CP0
3RV1912-1CP0
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Siemens
3RV2321-1JC10
3RV2321-1JC10
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Siemens
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.