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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
CJ250N
CJ250N
In Stock
From
$3,343.86
Schneider Electric
250
600
CJ350H
CJ350H
In Stock
From
$464.18
Square D
350
600
CJ350N
CJ350N
In Stock
From
$347.39
Merlin Gerin
350
600
CJ400H
CJ400H
In Stock
From
$1,574.90
Merlin Gerin
400
600
CJ400L
CJ400L
In Stock
From
$1,704.85
Merlin Gerin
400
600
CJ600
CJ600
In Stock
From
$131.98
Schneider Electric
600
600
CJ600H
CJ600H
In Stock
From
$335.33
Square D
600
600
CJ600NA
CJ600NA
In Stock
From
$1,696.46
Merlin Gerin
600
600
CK1000HL
CK1000HL
In Stock
From
$972.73
Merlin Gerin
1000
600
CK1000L
CK1000L
In Stock
From
$4,551.37
Square D
1000
480
CK1200E
CK1200E
In Stock
From
$1,821.78
Merlin Gerin
1200
600
CK1200H
CK1200H
In Stock
From
$3,920.30
Merlin Gerin
1200
600
CK400H
CK400H
In Stock
From
$1,206.66
Merlin Gerin
400
600
CK400N
CK400N
In Stock
From
$4,718.94
Merlin Gerin
400
600
CK400NN
CK400NN
In Stock
From
$795.78
Merlin Gerin
400
600
CK800HH
CK800HH
In Stock
From
$1,930.78
Square D
800
600
CK800NA
CK800NA
In Stock
From
$880.31
Merlin Gerin
800
600
CKAF36001S
CKAF36001S
In Stock
From
$518.70
Merlin Gerin
1200
600
DGA34150E53
DGA34150E53
In Stock
From
$592.46
Schneider Electric
150
480
DGA34250E20
DGA34250E20
In Stock
From
$1,267.39
Schneider Electric
250
480
DGA34250E53
DGA34250E53
In Stock
From
$3,399.95
Square D
250
480
DGA34600E53
DGA34600E53
In Stock
From
$2,604.91
Square D
600
480
DGF36600E20
DGF36600E20
In Stock
From
$918.77
Schneider Electric
600
600
DGL36400E53
DGL36400E53
In Stock
From
$6,512.40
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.