1. Home / 
  2. All Categories / 
  3. Circuit Breaker / 
  4. Molded Case Circuit Breaker

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
HDL36040CAASJ
HDL36040CAASJ
In Stock
From
$820.78
Square D
40
600
HDL36040CAASJYP
HDL36040CAASJYP
In Stock
From
$729.58
Square D
40
600
HDL36040CAASK
HDL36040CAASK
In Stock
From
$820.78
Square D
40
600
HDL36040CAASKYP
HDL36040CAASKYP
In Stock
From
$729.58
Square D
40
600
HDL36040CAASL
HDL36040CAASL
In Stock
From
$820.78
Square D
40
600
HDL36040CAASLYP
HDL36040CAASLYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAASN
HDL36040CAASN
In Stock
From
$820.78
Square D
40
600
HDL36040CAASNYP
HDL36040CAASNYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAASP
HDL36040CAASP
In Stock
From
$820.78
Square D
40
600
HDL36040CAASPYP
HDL36040CAASPYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAASR
HDL36040CAASR
In Stock
From
$820.78
Square D
40
600
HDL36040CAASRYP
HDL36040CAASRYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAASV
HDL36040CAASV
In Stock
From
$820.78
Square D
40
600
HDL36040CAASVYP
HDL36040CAASVYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAAUA
HDL36040CAAUA
In Stock
From
$820.78
Square D
40
600
HDL36040CAAUAYP
HDL36040CAAUAYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAAUD
HDL36040CAAUD
In Stock
From
$820.78
Square D
40
600
HDL36040CAAUDYP
HDL36040CAAUDYP
In Stock
From
$729.58
Square D
40
600
HDL36040CAAUH
HDL36040CAAUH
In Stock
From
$820.78
Square D
40
600
HDL36040CAAUHYP
HDL36040CAAUHYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAAUJ
HDL36040CAAUJ
In Stock
From
$820.78
Square D
40
600
HDL36040CAAUJYP
HDL36040CAAUJYP
In Stock
From
$820.78
Square D
40
600
HDL36040CAAUK
HDL36040CAAUK
In Stock
From
$820.78
Square D
40
600
HDL36040CAAUKYP
HDL36040CAAUKYP
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.