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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
657D117G16
657D117G16
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Westinghouse
6730S
6730S
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Honeywell
6FT06B
6FT06B
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Crabtree
6FT63C
6FT63C
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Crabtree
6TC14-15
6TC14-15
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Sensata Technologies
7140B
7140B
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Contactum
7274-21-5
7274-21-5
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Sensata Technologies
7860S
7860S
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Honeywell
787-1664/106-000
787-1664/106-000
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Wago
7PBJN3M63
7PBJN3M63
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Crabtree
8111-14
8111-14
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Eaton
8340-G211-N1F4-A4H111-3A
8340-G211-N1F4-A4H111-3A
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E-T-A Circuit Breakers
8533SBA53V86CFF4G105P51P52P68TX22Y342
8533SBA53V86CFF4G105P51P52P68TX22Y342
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Schneider Electric
8538SBG13V86CFF4G105H308P43P45TX22Y91
8538SBG13V86CFF4G105H308P43P45TX22Y91
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Schneider Electric
8901DPA53V09
8901DPA53V09
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Schneider Electric
9000-42084-0100400
9000-42084-0100400
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Murr Elektronik
9124093500
9124093500
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Weidmuller
91H2210-10A
91H2210-10A
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E-T-A Circuit Breakers
91H3210
91H3210
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E-T-A Circuit Breakers
91H3240
91H3240
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E-T-A Circuit Breakers
9700A/12S35
9700A/12S35
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Wieland
A-0701M-12A
A-0701M-12A
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Sang Mao Enterprise Co
A-3020
A-3020
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Sylvania
A126L200C0
A126L200C0
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Schurter
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.