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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
24729
24729
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Merlin Gerin
25
440
24730
24730
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From
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Merlin Gerin
32
440
24731
24731
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Merlin Gerin
40
440
24732
24732
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From
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Merlin Gerin
50
440
24733
24733
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Merlin Gerin
50
440
24739
24739
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Merlin Gerin
10
440
24741
24741
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From
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Merlin Gerin
20
440
24744
24744
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Merlin Gerin
40
440
24900
24900
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Merlin Gerin
0.5
440
24903
24903
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Merlin Gerin
0.75
440
24906
24906
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Merlin Gerin
0.5
440
24907
24907
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Merlin Gerin
0.75
440
24968
24968
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Merlin Gerin
1
440
24969
24969
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Merlin Gerin
2
440
24970
24970
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Merlin Gerin
3
440
24973
24973
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Merlin Gerin
10
440
24974
24974
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Merlin Gerin
16
440
24977
24977
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Merlin Gerin
32
440
24978
24978
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Merlin Gerin
40
440
24979
24979
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Merlin Gerin
50
440
24980
24980
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Merlin Gerin
63
440
24983
24983
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Merlin Gerin
3
440
24987
24987
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Merlin Gerin
16
440
24990
24990
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Merlin Gerin
32
440
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.