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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
EJB34040AABA
EJB34040AABA
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Square D
40
480
EJB34040AABASA
EJB34040AABASA
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Schneider Electric
40
480
EJB34045AABA
EJB34045AABA
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Schneider Electric
45
480
EJB34045AABASA
EJB34045AABASA
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Schneider Electric
45
480
EJB34050AABA
EJB34050AABA
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Schneider Electric
50
480
EJB34060AABA
EJB34060AABA
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Square D
60
480
EJB34060AABASA
EJB34060AABASA
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Schneider Electric
60
480
EJB34070AABA
EJB34070AABA
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Square D
70
480
EJB34080AABA
EJB34080AABA
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Schneider Electric
80
480
EJB34080AABASA
EJB34080AABASA
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Schneider Electric
80
480
EJB34090AABA
EJB34090AABA
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Schneider Electric
90
480
EJB34090AABASA
EJB34090AABASA
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Schneider Electric
90
480
EJB34100AABA
EJB34100AABA
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Square D
100
480
EJB34110AABA
EJB34110AABA
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Square D
110
480
EJB34110AABASA
EJB34110AABASA
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Square D
110
480
EJB34125AABASA
EJB34125AABASA
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Schneider Electric
125
480
EJB36110SA
EJB36110SA
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Schneider Electric
110
600
EJB36125SA
EJB36125SA
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Square D
125
600
LA361751021
LA361751021
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Square D
175
600
LA362001021
LA362001021
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Square D
200
600
LJA36250U31XSOYQ
LJA36250U31XSOYQ
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Square D
250
600
LJA36400U31XSOYQ
LJA36400U31XSOYQ
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Schneider Electric
400
600
LJA36400U33XSOYQ
LJA36400U33XSOYQ
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Square D
400
600
LJA36400U43XENAAYH1YP
LJA36400U43XENAAYH1YP
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Square D
400
600
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.