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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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3VA4110-6ED24-0AA0
3VA4110-6ED24-0AA0
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-
3VA5195-6ED21-0AA0
3VA5195-6ED21-0AA0
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-
3VF3111-0FL41-0AA0
3VF3111-0FL41-0AA0
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3VF4231-1DF41-0AC1
3VF4231-1DF41-0AC1
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3VF5111-6EL71-0AA0
3VF5111-6EL71-0AA0
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3VL9-206-6AB30
3VL9-206-6AB30
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3VL92067DC30
3VL92067DC30
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3WN6-521-0JB18-3KA1-Z
3WN6-521-0JB18-3KA1-Z
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3ZX1012-0RV01-1AA1
3ZX1012-0RV01-1AA1
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419035-400JSA
419035-400JSA
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Schneider Electric
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4400.0065
4400.0065
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Schurter
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4430.3204
4430.3204
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Schurter
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454D676G15
454D676G15
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Cutler Hammer
25
600
50/15
50/15
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Crabtree
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5SG7-150
5SG7-150
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5SG7-161
5SG7-161
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5SG7713
5SG7713
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5SL6504-7
5SL6504-7
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Siemens
4
400
5SN1-SP-320A
5SN1-SP-320A
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Siemens
20
-
5SN2320
5SN2320
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5SN3-NG-6A
5SN3-NG-6A
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5SN3302-8F
5SN3302-8F
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5SN3350-8F
5SN3350-8F
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5SN5316-8
5SN5316-8
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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.