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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
KAR36175
KAR36175
In Stock
From
$1,423.00
Square D
175
600
KC32175
KC32175
In Stock
From
$1,331.33
Square D
175
240
KC34110
KC34110
In Stock
From
$1,974.60
Square D
110
480
KC34125
KC34125
In Stock
From
$1,024.43
Square D
125
480
KC341251021
KC341251021
In Stock
From
$1,439.78
Square D
125
480
KC34200
KC34200
In Stock
From
$1,612.15
Schneider Electric
200
480
KCB34125
KCB34125
In Stock
From
$1,929.58
Square D
125
480
KCB34150
KCB34150
In Stock
From
$1,038.31
Square D
150
480
KCB34200
KCB34200
In Stock
From
$2,132.48
Square D
200
480
KCF34100
KCF34100
In Stock
From
$788.61
Square D
100
480
KCF34250
KCF34250
In Stock
From
$921.90
Square D
250
480
KCL34125
KCL34125
In Stock
From
$1,040.81
Square D
125
480
KCL341251021
KCL341251021
In Stock
From
$824.87
Square D
125
480
KCL34150
KCL34150
In Stock
From
$1,612.63
Square D
150
480
KCL342001021
KCL342001021
In Stock
From
$2,727.27
Square D
200
480
KCP34110
KCP34110
In Stock
From
$2,078.03
Square D
110
480
KCP34125
KCP34125
In Stock
From
$2,181.46
Square D
125
480
KCP34150
KCP34150
In Stock
From
$782.28
Square D
150
480
KCP34175
KCP34175
In Stock
From
$1,333.50
Square D
175
480
KCP34200
KCP34200
In Stock
From
$1,820.51
Square D
200
480
KCP34225
KCP34225
In Stock
From
$962.03
Square D
225
480
KCP34250
KCP34250
In Stock
From
$2,143.05
Square D
250
480
KDL32100
KDL32100
In Stock
From
$429.58
Schneider Electric
100
240
KDL32150
KDL32150
In Stock
From
$458.38
Square D
150
240
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.