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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
MGN61375
MGN61375
Limited Stock
From
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Schneider Electric
15
277
MGN61376
MGN61376
Limited Stock
From
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Square D
20
277
MGN61378
MGN61378
Limited Stock
From
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Square D
1
480
MGN61379
MGN61379
Limited Stock
From
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Schneider Electric
2
480
MGN61380
MGN61380
Limited Stock
From
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Schneider Electric
3
480
MGN61381
MGN61381
Limited Stock
From
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Square D
4
480
MGN61382
MGN61382
Limited Stock
From
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Square D
5
480
MGN61383
MGN61383
Limited Stock
From
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Schneider Electric
6
480
MGN61384
MGN61384
Limited Stock
From
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Schneider Electric
8
480
MGN61386
MGN61386
Limited Stock
From
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Square D
15
480
MGN61387
MGN61387
Limited Stock
From
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Schneider Electric
20
480
MGN61389
MGN61389
Limited Stock
From
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Schneider Electric
1
480
MGN61390
MGN61390
Limited Stock
From
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Schneider Electric
2
480
MGN61391
MGN61391
Limited Stock
From
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Schneider Electric
3
480
MGN61392
MGN61392
Limited Stock
From
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Schneider Electric
4
480
MGN61393
MGN61393
Limited Stock
From
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Schneider Electric
5
480
MGN61394
MGN61394
Limited Stock
From
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Square D
6
480
MGN61395
MGN61395
Limited Stock
From
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Schneider Electric
8
480
MGN61397
MGN61397
Limited Stock
From
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Square D
15
480
MGN61398
MGN61398
Limited Stock
From
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Schneider Electric
20
480
MGN61399
MGN61399
Limited Stock
From
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Square D
0.5
277
MGN61400
MGN61400
Limited Stock
From
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Schneider Electric
1
277
MGN61401
MGN61401
Limited Stock
From
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Schneider Electric
2
277
MGN61402
MGN61402
Limited Stock
From
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Schneider Electric
3
277
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.