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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
FJA240404
FJA240404
Limited Stock
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Schneider Electric
40
480
FJA240405
FJA240405
Limited Stock
From
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Square D
40
480
FJA240406
FJA240406
Limited Stock
From
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Schneider Electric
40
480
FJA24045
FJA24045
Limited Stock
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Square D
45
480
FJA240451
FJA240451
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Square D
45
480
FJA240452
FJA240452
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Square D
45
480
FJA240453
FJA240453
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Square D
45
480
FJA240454
FJA240454
Limited Stock
From
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Schneider Electric
45
480
FJA240455
FJA240455
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Square D
45
480
FJA240456
FJA240456
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Square D
45
480
FJA24050
FJA24050
Limited Stock
From
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Schneider Electric
50
480
FJA240501
FJA240501
Limited Stock
From
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Schneider Electric
50
480
FJA240502
FJA240502
Limited Stock
From
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Schneider Electric
50
480
FJA240503
FJA240503
Limited Stock
From
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Square D
50
480
FJA240505
FJA240505
Limited Stock
From
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Square D
50
480
FJA240506
FJA240506
Limited Stock
From
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Schneider Electric
50
480
FJA24060
FJA24060
Limited Stock
From
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Schneider Electric
60
480
FJA240601
FJA240601
Limited Stock
From
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Schneider Electric
60
480
FJA240602
FJA240602
Limited Stock
From
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Square D
60
480
FJA240603
FJA240603
Limited Stock
From
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Schneider Electric
60
480
FJA240604
FJA240604
Limited Stock
From
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Schneider Electric
60
480
FJA240605
FJA240605
Limited Stock
From
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Schneider Electric
60
480
FJA240606
FJA240606
Limited Stock
From
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Schneider Electric
60
480
FJA24070
FJA24070
Limited Stock
From
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Square D
70
480
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.