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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
HDL36040CAFSHYP
HDL36040CAFSHYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAFSJ
HDL36040CAFSJ
In Stock
From
$820.78
Square D
40
600
HDL36040CAFSJYP
HDL36040CAFSJYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAFSK
HDL36040CAFSK
In Stock
From
$820.78
Square D
40
600
HDL36040CAFSKYP
HDL36040CAFSKYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAFSL
HDL36040CAFSL
In Stock
From
$729.58
Square D
40
600
HDL36040CAFSLYP
HDL36040CAFSLYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAFSN
HDL36040CAFSN
In Stock
From
$820.78
Square D
40
600
HDL36040CAFSNYP
HDL36040CAFSNYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAFSP
HDL36040CAFSP
In Stock
From
$820.78
Square D
40
600
HDL36040CAFSPYP
HDL36040CAFSPYP
In Stock
From
$729.58
Square D
40
600
HDL36040CAFSR
HDL36040CAFSR
In Stock
From
$820.78
Square D
40
600
HDL36040CAFSRYP
HDL36040CAFSRYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAFSV
HDL36040CAFSV
In Stock
From
$820.78
Square D
40
600
HDL36040CAFSVYP
HDL36040CAFSVYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAFUA
HDL36040CAFUA
In Stock
From
$820.78
Square D
40
600
HDL36040CAFUAYP
HDL36040CAFUAYP
In Stock
From
$729.58
Square D
40
600
HDL36040CAFUD
HDL36040CAFUD
In Stock
From
$820.78
Square D
40
600
HDL36040CAFUDYP
HDL36040CAFUDYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAFUH
HDL36040CAFUH
In Stock
From
$729.58
Square D
40
600
HDL36040CAFUHYP
HDL36040CAFUHYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAFUJ
HDL36040CAFUJ
In Stock
From
$820.78
Square D
40
600
HDL36040CAFUJYP
HDL36040CAFUJYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAFUK
HDL36040CAFUK
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.