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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
LV426905
LV426905
Limited Stock
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Schneider Electric
-
-
LV429316
LV429316
Limited Stock
From
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Schneider Electric
-
-
LV430554
LV430554
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Schneider Electric
-
-
MGN61300
MGN61300
Limited Stock
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Schneider Electric
0.5
277
MGN61307
MGN61307
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Schneider Electric
8
277
MGN61310
MGN61310
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Schneider Electric
20
277
MGN61329
MGN61329
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Schneider Electric
8
480
MGN61333
MGN61333
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Square D
0.5
277
MGN61335
MGN61335
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Schneider Electric
2
277
MGN61337
MGN61337
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Square D
4
277
MGN61338
MGN61338
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Square D
5
277
MGN61340
MGN61340
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Schneider Electric
8
277
MGN61342
MGN61342
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Schneider Electric
15
277
MGN61349
MGN61349
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Square D
5
480
MGN61356
MGN61356
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Schneider Electric
1
480
MGN61361
MGN61361
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Square D
6
480
MGN61366
MGN61366
Limited Stock
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Square D
0.5
277
MGN61367
MGN61367
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Square D
1
277
MGN61368
MGN61368
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Schneider Electric
2
277
MGN61369
MGN61369
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Schneider Electric
3
277
MGN61370
MGN61370
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Square D
4
277
MGN61371
MGN61371
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Square D
5
277
MGN61372
MGN61372
Limited Stock
From
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Schneider Electric
6
277
MGN61373
MGN61373
Limited Stock
From
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Schneider Electric
8
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.