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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
HDL36040CAESNYP
HDL36040CAESNYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAESP
HDL36040CAESP
In Stock
From
$820.78
Square D
40
600
HDL36040CAESPYP
HDL36040CAESPYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAESR
HDL36040CAESR
In Stock
From
$820.78
Square D
40
600
HDL36040CAESRYP
HDL36040CAESRYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAESV
HDL36040CAESV
In Stock
From
$820.78
Square D
40
600
HDL36040CAESVYP
HDL36040CAESVYP
In Stock
From
$729.58
Square D
40
600
HDL36040CAEUA
HDL36040CAEUA
In Stock
From
$820.78
Square D
40
600
HDL36040CAEUAYP
HDL36040CAEUAYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAEUD
HDL36040CAEUD
In Stock
From
$820.78
Square D
40
600
HDL36040CAEUDYP
HDL36040CAEUDYP
In Stock
From
$729.58
Square D
40
600
HDL36040CAEUH
HDL36040CAEUH
In Stock
From
$820.78
Square D
40
600
HDL36040CAEUHYP
HDL36040CAEUHYP
In Stock
From
$729.58
Square D
40
600
HDL36040CAEUJ
HDL36040CAEUJ
In Stock
From
$820.78
Square D
40
600
HDL36040CAEUJYP
HDL36040CAEUJYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAEUK
HDL36040CAEUK
In Stock
From
$820.78
Square D
40
600
HDL36040CAEUKYP
HDL36040CAEUKYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAEUN
HDL36040CAEUN
In Stock
From
$729.58
Square D
40
600
HDL36040CAEUNYP
HDL36040CAEUNYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAEUO
HDL36040CAEUO
In Stock
From
$729.58
Square D
40
600
HDL36040CAEUOYP
HDL36040CAEUOYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAEUP
HDL36040CAEUP
In Stock
From
$820.78
Square D
40
600
HDL36040CAEUPYP
HDL36040CAEUPYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAEUR
HDL36040CAEUR
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.