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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
HDA36125AASD
HDA36125AASD
In Stock
From
$1,646.69
Square D
125
600
HDA36125AASDYP
HDA36125AASDYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AASH
HDA36125AASH
In Stock
From
$1,646.69
Square D
125
600
HDA36125AASHYP
HDA36125AASHYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AASJ
HDA36125AASJ
In Stock
From
$1,646.69
Square D
125
600
HDA36125AASJYP
HDA36125AASJYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AASK
HDA36125AASK
In Stock
From
$1,646.69
Square D
125
600
HDA36125AASKYP
HDA36125AASKYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AASL
HDA36125AASL
In Stock
From
$1,646.69
Square D
125
600
HDA36125AASLYP
HDA36125AASLYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AASN
HDA36125AASN
In Stock
From
$1,646.69
Square D
125
600
HDA36125AASNYP
HDA36125AASNYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AASP
HDA36125AASP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AASPYP
HDA36125AASPYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AASR
HDA36125AASR
In Stock
From
$1,646.69
Square D
125
600
HDA36125AASRYP
HDA36125AASRYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AASV
HDA36125AASV
In Stock
From
$1,646.69
Square D
125
600
HDA36125AASVYP
HDA36125AASVYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AAUA
HDA36125AAUA
In Stock
From
$1,646.69
Square D
125
600
HDA36125AAUAYP
HDA36125AAUAYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AAUD
HDA36125AAUD
In Stock
From
$1,646.69
Square D
125
600
HDA36125AAUDYP
HDA36125AAUDYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125AAUH
HDA36125AAUH
In Stock
From
$1,646.69
Square D
125
600
HDA36125AAUHYP
HDA36125AAUHYP
In Stock
From
$1,646.69
Square D
125
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.