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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
HDL36040CAFUKYP
HDL36040CAFUKYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAFUN
HDL36040CAFUN
In Stock
From
$820.78
Square D
40
600
HDL36040CAFUNYP
HDL36040CAFUNYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAFUO
HDL36040CAFUO
In Stock
From
$729.58
Square D
40
600
HDL36040CAFUOYP
HDL36040CAFUOYP
In Stock
From
$729.58
Square D
40
600
HDL36040CAFUP
HDL36040CAFUP
In Stock
From
$820.78
Square D
40
600
HDL36040CAFUPYP
HDL36040CAFUPYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAFUR
HDL36040CAFUR
In Stock
From
$820.78
Square D
40
600
HDL36040CAFURYP
HDL36040CAFURYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAFUS
HDL36040CAFUS
In Stock
From
$729.58
Square D
40
600
HDL36040CAFUSYP
HDL36040CAFUSYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAFYP
HDL36040CAFYP
In Stock
From
$820.78
Square D
40
600
HDL36040CBC
HDL36040CBC
In Stock
From
$820.78
Square D
40
600
HDL36040CBCSD
HDL36040CBCSD
In Stock
From
$729.58
Square D
40
600
HDL36040CBCSDYP
HDL36040CBCSDYP
In Stock
From
$820.78
Square D
40
600
HDL36040CBCSH
HDL36040CBCSH
In Stock
From
$729.58
Square D
40
600
HDL36040CBCSHYP
HDL36040CBCSHYP
In Stock
From
$820.78
Square D
40
600
HDL36040CBCSJ
HDL36040CBCSJ
In Stock
From
$820.78
Square D
40
600
HDL36040CBCSJYP
HDL36040CBCSJYP
In Stock
From
$820.78
Square D
40
600
HDL36040CBCSK
HDL36040CBCSK
In Stock
From
$729.58
Square D
40
600
HDL36040CBCSKYP
HDL36040CBCSKYP
In Stock
From
$729.58
Square D
40
600
HDL36040CBCSL
HDL36040CBCSL
In Stock
From
$820.78
Square D
40
600
HDL36040CBCSLYP
HDL36040CBCSLYP
In Stock
From
$820.78
Square D
40
600
HDL36040CBCSN
HDL36040CBCSN
In Stock
From
$729.58
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.