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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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30456
30456
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Schneider Electric
3120-F323-P7T1-W19FY5-5A
3120-F323-P7T1-W19FY5-5A
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E-T-A Circuit Breakers
3120-F324-H7T1-W01D-16A
3120-F324-H7T1-W01D-16A
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E-T-A Circuit Breakers
3120-N321-P7T1-W01D-10A
3120-N321-P7T1-W01D-10A
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Eta Engineering Technology
331-3618
331-3618
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Rs Pro
35-2103-BU
35-2103-BU
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GC Electronics
35-2105-BU
35-2105-BU
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GC Electronics
35-2106-BU
35-2106-BU
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GC Electronics
35-2108-BU
35-2108-BU
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GC Electronics
35-2110-BU
35-2110-BU
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GC Electronics
35-2115-BU
35-2115-BU
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GC Electronics
35-2120
35-2120
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GC Electronics
35-2120-BU
35-2120-BU
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GC Electronics
35-2125-BU
35-2125-BU
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GC Electronics
35-2130-BU
35-2130-BU
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GC Electronics
35-21BT-BU
35-21BT-BU
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GC Electronics
3BU16
3BU16
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Altech Corp
3BU40R
3BU40R
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Altech Corp
3BU50R
3BU50R
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Altech Corp
3C15UM
3C15UM
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Altech Corp
3C40UL
3C40UL
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Altech Corp
3C63UL
3C63UL
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Altech Corp
3CU60L
3CU60L
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Altech Corp
3D15UM
3D15UM
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Altech Corp
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.