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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
24344
24344
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Schneider Electric
1
440
24346
24346
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Merlin Gerin
3
440
24633
24633
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Merlin Gerin
20
440
24634
24634
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Square D
25
440
24636
24636
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Schneider Electric
40
440
24637
24637
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Merlin Gerin
50
440
24638
24638
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Square D
63
440
24655
24655
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Merlin Gerin
3
440
24661
24661
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Schneider Electric
20
440
24663
24663
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Merlin Gerin
32
440
24664
24664
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Schneider Electric
40
440
24665
24665
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Square D
50
440
24667
24667
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Square D
1
440
24669
24669
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Merlin Gerin
3
440
24671
24671
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Merlin Gerin
6
440
24672
24672
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Square D
10
440
24676
24676
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Schneider Electric
25
440
24677
24677
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Schneider Electric
32
440
24678
24678
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Merlin Gerin
40
440
24680
24680
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Schneider Electric
63
440
2C100
2C100
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Schneider Electric
100
240
2C125
2C125
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Schneider Electric
125
240
31160
31160
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Square D
100
690
31163
31163
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Merlin Gerin
200
690
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.