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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
KAL262251212
KAL262251212
In Stock
From
$291.34
Square D
225
600
KAL26250
KAL26250
In Stock
From
$691.23
Square D
250
600
KAL36070
KAL36070
In Stock
From
$964.70
Square D
70
600
KAL360701021
KAL360701021
In Stock
From
$332.39
Square D
70
600
KAL36080
KAL36080
In Stock
From
$979.07
Square D
80
600
KAL36090
KAL36090
In Stock
From
$906.47
Square D
90
600
KAL36100
KAL36100
In Stock
From
$758.46
Square D
100
600
KAL361001021
KAL361001021
In Stock
From
$1,171.86
Square D
100
600
KAL361101212
KAL361101212
In Stock
From
$3,330.60
Square D
110
600
KAL361251021
KAL361251021
In Stock
From
$1,317.13
Square D
125
600
KAL361251127
KAL361251127
In Stock
From
$439.71
Square D
125
600
KAL361251212
KAL361251212
In Stock
From
$1,317.13
Square D
125
600
KAL36150
KAL36150
In Stock
From
$557.24
Square D
150
600
KAL361501021
KAL361501021
In Stock
From
$1,231.17
Square D
150
600
KAL361501027
KAL361501027
In Stock
From
$725.80
Square D
150
600
KAL361501121
KAL361501121
In Stock
From
$1,231.97
Square D
150
600
KAL361501212
KAL361501212
Limited Stock
From
Get Price
Square D
150
600
KAL361501380
KAL361501380
In Stock
From
$3,430.58
Square D
150
600
KAL36150V
KAL36150V
In Stock
From
$9.04
Square D
150
600
KAL36175
KAL36175
In Stock
From
$879.33
Square D
175
600
KAL361751021
KAL361751021
In Stock
From
$1,245.12
Square D
175
600
KAL36200
KAL36200
In Stock
From
$1,172.07
Square D
200
600
KAL36200-BLACK
KAL36200-BLACK
In Stock
From
$888.30
Square D
200
600
KAL362001021
KAL362001021
In Stock
From
$1,700.18
Square D
200
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.