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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
RLF36000S25
RLF36000S25
In Stock
From
$13,228.78
Square D
2500
600
RLF36160U31F
RLF36160U31F
In Stock
From
$11,049.11
Square D
1600
600
RLF36200CU31A
RLF36200CU31A
In Stock
From
$7,777.78
Schneider Electric
2000
600
KA360801021
KA360801021
In Stock
From
$1,060.42
Square D
80
600
KA36090
KA36090
In Stock
From
$369.52
Square D
90
600
KA360901021
KA360901021
In Stock
From
$1,310.78
Square D
90
600
KA36100G
KA36100G
In Stock
From
$663.49
Square D
100
600
KA36110
KA36110
In Stock
From
$1,199.21
Square D
110
600
KA36110MT
KA36110MT
In Stock
From
$378.22
Square D
110
600
KA36125G
KA36125G
In Stock
From
$653.64
Square D
125
600
KA36125MT
KA36125MT
In Stock
From
$420.46
Square D
125
600
KA361501212
KA361501212
In Stock
From
$1,034.89
Square D
150
600
KA361502100J
KA361502100J
In Stock
From
$1,047.16
Square D
150
600
KA36150G
KA36150G
In Stock
From
$799.60
Square D
150
600
KA36150MT
KA36150MT
In Stock
From
$1,405.43
Square D
150
600
KA361751021
KA361751021
In Stock
From
$997.22
Square D
175
600
KA36200G
KA36200G
In Stock
From
$2,146.67
Square D
200
600
KA362251021
KA362251021
In Stock
From
$976.56
Square D
225
600
KA36225G
KA36225G
In Stock
From
$1,159.26
Square D
225
600
KA362502100J
KA362502100J
In Stock
From
$2,225.29
Square D
250
600
KH36080
KH36080
In Stock
From
$1,864.49
Square D
80
600
KH36090
KH36090
In Stock
From
$881.12
Square D
90
600
KH36100
KH36100
In Stock
From
$1,312.09
Square D
100
600
KH36175
KH36175
In Stock
From
$1,253.79
Square D
175
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.