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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
31735
31735
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Merlin Gerin
80
690
31737
31737
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Merlin Gerin
40
690
31740
31740
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Merlin Gerin
250
690
31741
31741
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Merlin Gerin
200
690
31742
31742
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Merlin Gerin
160
690
31743
31743
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Schneider Electric
125
690
31744
31744
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Merlin Gerin
100
690
31745
31745
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Schneider Electric
80
690
32409
32409
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Merlin Gerin
400
600
32677
32677
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Merlin Gerin
350
690
32697
32697
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Merlin Gerin
400
690
32698
32698
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Merlin Gerin
400
690
32704
32704
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Merlin Gerin
400
690
32757
32757
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Merlin Gerin
400
440
32805
32805
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Merlin Gerin
630
690
32810
32810
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Merlin Gerin
630
690
32894
32894
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Merlin Gerin
630
690
32897
32897
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Schneider Electric
630
690
32898
32898
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Merlin Gerin
630
690
32956
32956
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Merlin Gerin
630
440
36510
36510
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Merlin Gerin
150
600
36511
36511
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Merlin Gerin
150
600
36520
36520
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Merlin Gerin
250
600
36521
36521
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Merlin Gerin
250
600
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.