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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
18464
18464
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Merlin Gerin
32
440
18465
18465
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Merlin Gerin
40
440
18466
18466
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Merlin Gerin
50
440
18467
18467
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Merlin Gerin
63
440
18468
18468
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Merlin Gerin
80
440
18471
18471
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Merlin Gerin
10
440
18472
18472
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Merlin Gerin
16
440
18473
18473
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Merlin Gerin
20
440
18474
18474
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Merlin Gerin
25
440
18475
18475
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Merlin Gerin
32
440
18476
18476
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Merlin Gerin
40
440
18479
18479
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Merlin Gerin
80
440
18480
18480
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Merlin Gerin
100
440
18504
18504
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Merlin Gerin
10
440
18505
18505
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Merlin Gerin
16
440
18507
18507
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Merlin Gerin
25
440
18509
18509
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Merlin Gerin
40
440
18510
18510
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Merlin Gerin
50
440
18511
18511
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Merlin Gerin
63
440
18514
18514
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Merlin Gerin
125
440
18515
18515
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Merlin Gerin
10
440
18516
18516
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Merlin Gerin
16
440
18517
18517
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Merlin Gerin
20
440
18518
18518
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Merlin Gerin
25
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.