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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
1010/2W B10
1010/2W B10
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Proteus
106-M2-P10-1.5A
106-M2-P10-1.5A
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Eta Engineering Technology
109-240-101
109-240-101
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TE Connectivity
109-250-101
109-250-101
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TE Connectivity
111-201-101
111-201-101
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TE Connectivity
1222037
1222037
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Westinghouse
138876
138876
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Eaton
1393253-1
1393253-1
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TE Connectivity
1393255-2
1393255-2
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TE Connectivity
1393255-4
1393255-4
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TE Connectivity
140G-G-FCX03
140G-G-FCX03
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Allen-Bradley
140G-H-FMX04
140G-H-FMX04
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Allen-Bradley
140G-K-TLA2A3
140G-K-TLA2A3
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Allen-Bradley
140G-M-EXSLI3
140G-M-EXSLI3
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Allen-Bradley
140M-C2E-C10-CC
140M-C2E-C10-CC
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Allen-Bradley
140MG-G8P-C50-KA
140MG-G8P-C50-KA
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Allen-Bradley
140MT-D9E-B40
140MT-D9E-B40
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Allen-Bradley
140MT-D9N-A63
140MT-D9N-A63
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Allen-Bradley
140MT-F9E-C45
140MT-F9E-C45
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Allen-Bradley
140MT-F9T-C45
140MT-F9T-C45
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Allen-Bradley
140U-D6D2-B50
140U-D6D2-B50
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Allen-Bradley
140U-H6C3-C40-B
140U-H6C3-C40-B
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Allen-Bradley
140UT-D7D2-B60
140UT-D7D2-B60
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Allen-Bradley
140UT-D7D2-C20
140UT-D7D2-C20
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Allen-Bradley
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.