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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
KAL362001027
KAL362001027
In Stock
From
$1,281.38
Square D
200
600
KAL362001121
KAL362001121
In Stock
From
$1,579.58
Square D
200
600
KAL362001212
KAL362001212
In Stock
From
$769.99
Square D
200
600
KAL36225
KAL36225
In Stock
From
$858.01
Square D
225
600
KAL362251021
KAL362251021
In Stock
From
$1,395.37
Square D
225
600
KAL362251121
KAL362251121
In Stock
From
$1,395.37
Square D
225
600
KAL36225V
KAL36225V
In Stock
From
$1,395.37
Square D
225
600
KAL36250
KAL36250
In Stock
From
$1,325.16
Square D
250
600
KAL362501021
KAL362501021
In Stock
From
$2,141.30
Square D
250
600
KAL362501027
KAL362501027
In Stock
From
$853.81
Square D
250
600
KAL3625025M
KAL3625025M
In Stock
From
$2,141.30
Square D
250
600
KAL3625026M
KAL3625026M
In Stock
From
$4,258.81
Square D
250
600
KAL3625029M
KAL3625029M
In Stock
From
$1,784.42
Square D
250
600
KAL3625030M
KAL3625030M
In Stock
From
$2,141.30
Square D
250
600
KAL3625031M
KAL3625031M
In Stock
From
$4,613.71
Square D
250
600
KAP26090
KAP26090
In Stock
From
$577.22
Square D
90
600
KAP26225
KAP26225
In Stock
From
$219.83
Square D
225
600
KAP36100
KAP36100
In Stock
From
$488.54
Square D
100
600
KAP36125
KAP36125
In Stock
From
$470.54
Square D
125
600
KAP36150
KAP36150
In Stock
From
$856.34
Square D
150
600
KAP36175
KAP36175
In Stock
From
$560.50
Square D
175
600
KAP36200
KAP36200
In Stock
From
$1,113.47
Square D
200
600
KAP36225
KAP36225
In Stock
From
$863.54
Square D
225
600
KAP36250
KAP36250
In Stock
From
$1,785.82
Square D
250
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.