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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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Part Number
PRICE
Manufacturer
Amperage
Voltage
1229C36G11
1229C36G11
Limited Stock
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Westinghouse
1200
1000
1229C36G12
1229C36G12
Limited Stock
From
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Westinghouse
1000
1000
1229C37G18
1229C37G18
Limited Stock
From
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Westinghouse
1200
1000
1229C37G19
1229C37G19
Limited Stock
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Westinghouse
1000
1000
1229C37G20
1229C37G20
Limited Stock
From
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Westinghouse
1200
1000
1230C83G11
1230C83G11
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Eaton
400
500
1230C83G13
1230C83G13
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Eaton
400
500
1230C83G14
1230C83G14
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Eaton
400
500
1230C83G15
1230C83G15
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Eaton
400
500
1230C83G16
1230C83G16
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Eaton
400
500
1230C83G17
1230C83G17
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Eaton
400
500
1230C83G18
1230C83G18
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Eaton
400
500
1230C83G19
1230C83G19
Limited Stock
From
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Eaton
400
500
1230C83G20
1230C83G20
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From
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Eaton
400
500
1230C83G21
1230C83G21
Limited Stock
From
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Eaton
400
500
1230C83G22
1230C83G22
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Eaton
400
500
1241C54G02
1241C54G02
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Eaton
400
500
1241C54G03
1241C54G03
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Eaton
400
500
1241C54G04
1241C54G04
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Eaton
400
500
1241C54G05
1241C54G05
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Eaton
400
500
1241C54G07
1241C54G07
Limited Stock
From
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Eaton
400
500
1241C54G10
1241C54G10
Limited Stock
From
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Eaton
400
500
1241C54G11
1241C54G11
Limited Stock
From
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Eaton
400
500
1241C54G12
1241C54G12
Limited Stock
From
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Eaton
400
500
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.