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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.
SORT BY
Part Number
PRICE
Manufacturer
Amperage
Voltage
PJA36100U64AE1
PJA36100U64AE1
In Stock
From
$30,450.90
Schneider Electric
1000
600
PJF36060CU31A
PJF36060CU31A
In Stock
From
$20,211.66
Square D
600
600
PJF36100U31A
PJF36100U31A
In Stock
From
$1,666.62
Square D
1000
600
PJF36100U44A
PJF36100U44A
In Stock
From
$1,568.09
Square D
1000
600
PJF36100U63AE1
PJF36100U63AE1
In Stock
From
$4,666.67
Square D
1000
600
PJF36120CU31A
PJF36120CU31A
In Stock
From
$2,165.83
Schneider Electric
1200
600
PJL36000S10
PJL36000S10
In Stock
From
$7,195.89
Square D
1000
600
PJL36060M68
PJL36060M68
In Stock
From
$8,784.47
Square D
600
600
PJL36060U33A
PJL36060U33A
In Stock
From
$1,327.10
Square D
600
600
PJL36080
PJL36080
In Stock
From
$11,312.56
Square D
800
600
PJL36100U41A
PJL36100U41A
In Stock
From
$11,272.73
Schneider Electric
1000
600
PJL36100U43A
PJL36100U43A
In Stock
From
$8,085.25
Schneider Electric
1000
600
PJM36120
PJM36120
In Stock
From
$3,880.23
Schneider Electric
1200
600
PJP36080U31F
PJP36080U31F
In Stock
From
$1,650.61
Schneider Electric
800
600
PKA36040U31A
PKA36040U31A
In Stock
From
$8,649.83
Schneider Electric
400
600
PKA36080U33A
PKA36080U33A
In Stock
From
$12,815.36
Schneider Electric
800
600
PKA36100U44A
PKA36100U44A
In Stock
From
$15,162.00
Square D
1000
600
PKA36120U44A
PKA36120U44A
In Stock
From
$14,247.25
Square D
1200
600
PKF36120U44A
PKF36120U44A
In Stock
From
$1,333.28
Square D
1200
600
PLA34025U31A
PLA34025U31A
In Stock
From
$5,576.50
Schneider Electric
250
480
PLA34100U63AE1
PLA34100U63AE1
In Stock
From
$30,178.70
Schneider Electric
1000
480
PXD63B120
PXD63B120
In Stock
From
$4,132.22
Siemens
1200
600
PXD63B160
PXD63B160
In Stock
From
$3,769.01
Siemens
1600
600
PXD63S160A
PXD63S160A
In Stock
From
$3,435.84
Siemens
1600
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.