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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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Amperage
Voltage
HKD3100P
HKD3100P
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Eaton
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HKD3200P
HKD3200P
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Eaton
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HKD3225P
HKD3225P
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Eaton
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HKD3250P
HKD3250P
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Eaton
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HKD3300P
HKD3300P
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Eaton
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HKD3350P
HKD3350P
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Eaton
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HNX3X100
HNX3X100
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Siemens
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JD3070P
JD3070P
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Eaton
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JD3100P
JD3100P
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Eaton
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JD3150P
JD3150P
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Eaton
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JDL36200-R
JDL36200-R
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Schneider Electric
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LC3600NW
LC3600NW
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Westinghouse
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LD3600P
LD3600P
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Eaton
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LD63B800
LD63B800
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Siemens
800
600
LE36400LS2103
LE36400LS2103
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Square D
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LFCBJL400SN
LFCBJL400SN
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Federal Pacific
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LV434011
LV434011
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Schneider Electric
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MA361000
MA361000
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Square D
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MBKQR3200A
MBKQR3200A
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Siemens
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MULTI-9-60112
MULTI-9-60112
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Schneider Electric
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MULTI-9-60116
MULTI-9-60116
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Schneider Electric
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NB40
NB40
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Federal Pacific
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NFK3B250L
NFK3B250L
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Siemens
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NZM6B-63/ZM6-63CNA
NZM6B-63/ZM6-63CNA
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Eaton
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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.