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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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NV125-SV3P75A30
NV125-SV3P75A30
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Mitsubishi
NV30-FA-2P-10A
NV30-FA-2P-10A
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Mitsubishi
NV30-KC
NV30-KC
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Mitsubishi
NV400-SWU 3P 400A
NV400-SWU 3P 400A
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Mitsubishi
NV50-CA
NV50-CA
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Mitsubishi
NV50-CSA-3P-10A
NV50-CSA-3P-10A
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Mitsubishi
NV50-CSA-3P-30A
NV50-CSA-3P-30A
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Mitsubishi
NV50-FAU 3P 50A
NV50-FAU 3P 50A
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Mitsubishi
NV50-SVFU3P15A30
NV50-SVFU3P15A30
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Mitsubishi
NV50-SVFU3P50A30
NV50-SVFU3P50A30
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Mitsubishi
NV50KC3P40A1530100
NV50KC3P40A1530100
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Mitsubishi
NV63-SV3P40A30
NV63-SV3P40A30
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Mitsubishi
NZMH9-250/ZM9A-125-1200-NA
NZMH9-250/ZM9A-125-1200-NA
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Moeller
P1MB1PC16
P1MB1PC16
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Lovato
P1MB2PC16
P1MB2PC16
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Lovato
P1MBUH1PC15
P1MBUH1PC15
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Lovato
P1MBUH2PC20
P1MBUH2PC20
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Lovato
PAF361200-1021
PAF361200-1021
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Square D
PAF361200DC1352
PAF361200DC1352
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Square D
PCF36200DC1680
PCF36200DC1680
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Square D
PHF368001627
PHF368001627
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Square D
PKZM01-10
PKZM01-10
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Eaton
PLS6-C20/2-DC-AU
PLS6-C20/2-DC-AU
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Moeller
PP11-2-30.0A-36254-1-V
PP11-2-30.0A-36254-1-V
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Sensata Technologies
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.