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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
45-700-IG2-P10
45-700-IG2-P10
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E-T-A Circuit Breakers
54-616-PL
54-616-PL
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Pollak
5SJ41027HG40
5SJ41027HG40
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Siemens
5SJ41327HG40
5SJ41327HG40
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Siemens
5SJ42167HG42
5SJ42167HG42
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Siemens
5SJ4311-7HG42
5SJ4311-7HG42
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Siemens
5SL4213-8
5SL4213-8
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Siemens
5SL4516-8
5SL4516-8
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Siemens
5SP41926
5SP41926
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Siemens
5SP44918
5SP44918
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Siemens
60121 C60N
60121 C60N
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Schneider Electric
60124 C60N
60124 C60N
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Schneider Electric
60129 C60N
60129 C60N
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Schneider Electric
60198 C60N
60198 C60N
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Schneider Electric
60947-5-1 VDE 0660
60947-5-1 VDE 0660
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Rittal
60B/32
60B/32
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Crabtree
6720005312
6720005312
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Weidmuller
7221
7221
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Sperry Instruments
787-1662/004-1000
787-1662/004-1000
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Wago
787-2861-108-020
787-2861-108-020
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Wago
A2A-250
A2A-250
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ABB
A9F74402
A9F74402
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Schneider Electric
A9F84101
A9F84101
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Schneider Electric
A9R21225
A9R21225
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Schneider Electric
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.