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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
MGN61525
MGN61525
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Schneider Electric
MGN61530
MGN61530
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Schneider Electric
MM0406L1125ESC
MM0406L1125ESC
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Siemens
MN306Z
MN306Z
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Hager
MN316Z
MN316Z
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Hager
MN325Z
MN325Z
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Hager
MPW25-3-U010
MPW25-3-U010
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WEG
MS25-0.63
MS25-0.63
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Iskra
NB1-63 C50 3P
NB1-63 C50 3P
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Chint
NB1-63D3/P63
NB1-63D3/P63
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Chint
NC1V-1111-2AA
NC1V-1111-2AA
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IDEC
NC1V-2100-20AA
NC1V-2100-20AA
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IDEC
NC1V-2100-2AA
NC1V-2100-2AA
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IDEC
NC210
NC210
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Hager
NCN306A
NCN306A
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Hager
NES32100TM
NES32100TM
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Federal Pacific
NF100-CS-3P-75A
NF100-CS-3P-75A
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Mitsubishi
NF100-SS-3P-15A
NF100-SS-3P-15A
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Mitsubishi
NF30-CS3P30AW
NF30-CS3P30AW
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Mitsubishi
NF30-KC-3P-20A
NF30-KC-3P-20A
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Mitsubishi
NF30-KC2P15A
NF30-KC2P15A
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Mitsubishi
NF30-SP-3P-10A
NF30-SP-3P-10A
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Mitsubishi
NF30-SS-2P-30A
NF30-SS-2P-30A
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Mitsubishi
NF30-SS-3P-10A
NF30-SS-3P-10A
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Mitsubishi
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.