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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
HDA36020AABKUR
HDA36020AABKUR
In Stock
From
$801.77
Square D
20
600
HDA36020AABKURYP
HDA36020AABKURYP
In Stock
From
$801.77
Square D
20
600
HDA36020AABKUS
HDA36020AABKUS
In Stock
From
$801.77
Square D
20
600
HDA36020AABKUSYP
HDA36020AABKUSYP
In Stock
From
$801.77
Square D
20
600
HDA36020AABKYP
HDA36020AABKYP
In Stock
From
$801.77
Square D
20
600
HDA36020AASD
HDA36020AASD
In Stock
From
$801.77
Square D
20
600
HDA36020AASDYP
HDA36020AASDYP
In Stock
From
$801.77
Square D
20
600
HDA36020AASH
HDA36020AASH
In Stock
From
$801.77
Square D
20
600
HDA36020AASHYP
HDA36020AASHYP
In Stock
From
$801.77
Square D
20
600
HDA36020AASJ
HDA36020AASJ
In Stock
From
$801.77
Square D
20
600
HDA36020AASJYP
HDA36020AASJYP
In Stock
From
$801.77
Square D
20
600
HDA36020AASK
HDA36020AASK
In Stock
From
$801.77
Square D
20
600
HDA36020AASKYP
HDA36020AASKYP
In Stock
From
$801.77
Square D
20
600
HDA36020AASL
HDA36020AASL
In Stock
From
$801.77
Square D
20
600
HDA36020AASLYP
HDA36020AASLYP
In Stock
From
$801.77
Square D
20
600
HDA36020AASN
HDA36020AASN
In Stock
From
$801.77
Square D
20
600
HDA36020AASNYP
HDA36020AASNYP
In Stock
From
$801.77
Square D
20
600
HDA36020AASP
HDA36020AASP
In Stock
From
$801.77
Square D
20
600
HDA36020AASPYP
HDA36020AASPYP
In Stock
From
$801.77
Square D
20
600
HDA36020AASR
HDA36020AASR
In Stock
From
$801.77
Square D
20
600
HDA36020AASRYP
HDA36020AASRYP
In Stock
From
$801.77
Square D
20
600
HDA36020AASV
HDA36020AASV
In Stock
From
$801.77
Square D
20
600
HDA36020AASVYP
HDA36020AASVYP
In Stock
From
$801.77
Square D
20
600
HDA36020AAUA
HDA36020AAUA
In Stock
From
$801.77
Square D
20
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.