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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
HDL36040CBKURYP
HDL36040CBKURYP
In Stock
From
$820.78
Square D
40
600
HDL36040CBKUS
HDL36040CBKUS
In Stock
From
$820.78
Square D
40
600
HDL36040CBKUSYP
HDL36040CBKUSYP
In Stock
From
$729.58
Square D
40
600
HDL36040CBKYP
HDL36040CBKYP
In Stock
From
$820.78
Square D
40
600
HDL36040CSD
HDL36040CSD
In Stock
From
$820.78
Square D
40
600
HDL36040CSDYP
HDL36040CSDYP
In Stock
From
$820.78
Square D
40
600
HDL36040CSH
HDL36040CSH
In Stock
From
$820.78
Square D
40
600
HDL36040CSHYP
HDL36040CSHYP
In Stock
From
$820.78
Square D
40
600
HDL36040CSJ
HDL36040CSJ
In Stock
From
$820.78
Square D
40
600
HDL36040CSJYP
HDL36040CSJYP
In Stock
From
$729.58
Square D
40
600
HDL36040CSK
HDL36040CSK
In Stock
From
$820.78
Square D
40
600
HDL36040CSKYP
HDL36040CSKYP
In Stock
From
$820.78
Square D
40
600
HDL36040CSL
HDL36040CSL
In Stock
From
$729.58
Square D
40
600
HDL36040CSLYP
HDL36040CSLYP
In Stock
From
$820.78
Square D
40
600
HDL36040CSN
HDL36040CSN
In Stock
From
$820.78
Square D
40
600
HDL36040CSNYP
HDL36040CSNYP
In Stock
From
$820.78
Square D
40
600
HDL36040CSP
HDL36040CSP
In Stock
From
$820.78
Square D
40
600
HDL36040CSPYP
HDL36040CSPYP
In Stock
From
$729.58
Square D
40
600
HDL36040CSR
HDL36040CSR
In Stock
From
$820.78
Square D
40
600
HDL36040CSRYP
HDL36040CSRYP
In Stock
From
$729.58
Square D
40
600
HDL36040CSV
HDL36040CSV
In Stock
From
$820.78
Square D
40
600
HDL36040CSVYP
HDL36040CSVYP
In Stock
From
$729.58
Square D
40
600
HDL36040CUA
HDL36040CUA
In Stock
From
$820.78
Square D
40
600
HDL36040CUAYP
HDL36040CUAYP
In Stock
From
$820.78
Square D
40
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.