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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
PJM36080
PJM36080
Limited Stock
From
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Schneider Electric
800
600
PJM36080CU33A
PJM36080CU33A
Limited Stock
From
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Schneider Electric
800
600
PJM36100U31A
PJM36100U31A
Limited Stock
From
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Square D
1000
600
PJM36120CU64AE1
PJM36120CU64AE1
Limited Stock
From
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Square D
1200
600
PJP36000S12
PJP36000S12
Limited Stock
From
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Square D
1200
600
PJP36060
PJP36060
Limited Stock
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Square D
600
600
PJP36060CU31A
PJP36060CU31A
Limited Stock
From
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Schneider Electric
600
600
PJP36080CU31A
PJP36080CU31A
Limited Stock
From
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Schneider Electric
800
600
PJP36080U33A
PJP36080U33A
Limited Stock
From
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Schneider Electric
800
600
PJP36100
PJP36100
Limited Stock
From
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Schneider Electric
1000
600
PJP36120U44A
PJP36120U44A
Limited Stock
From
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Schneider Electric
1200
600
PJP36120U64AE1
PJP36120U64AE1
Limited Stock
From
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Schneider Electric
1200
600
PK400
PK400
Limited Stock
From
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Schneider Electric
400
600
PKA36025U43A
PKA36025U43A
Limited Stock
From
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Schneider Electric
250
600
PKA36060CU43A
PKA36060CU43A
Limited Stock
From
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Schneider Electric
600
600
PKA36060U33A
PKA36060U33A
Limited Stock
From
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Schneider Electric
600
600
PKA36060U44A
PKA36060U44A
Limited Stock
From
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Square D
600
600
PKA36080CU31A
PKA36080CU31A
Limited Stock
From
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Schneider Electric
800
600
PKA36080CU43A
PKA36080CU43A
Limited Stock
From
Get Price
Schneider Electric
800
600
PKA36080U44A
PKA36080U44A
Limited Stock
From
Get Price
Square D
800
600
PKA36120U31A
PKA36120U31A
Limited Stock
From
Get Price
Square D
1200
600
PKA36120U43A
PKA36120U43A
Limited Stock
From
Get Price
Schneider Electric
1200
600
PKF36080
PKF36080
Limited Stock
From
Get Price
Square D
800
600
PKF36080U31A
PKF36080U31A
Limited Stock
From
Get Price
Square D
800
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.