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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
HDA36100AABKUN
HDA36100AABKUN
In Stock
From
$1,782.47
Square D
100
600
HDA36100AABKUNYP
HDA36100AABKUNYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AABKUO
HDA36100AABKUO
In Stock
From
$1,782.47
Square D
100
600
HDA36100AABKUOYP
HDA36100AABKUOYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AABKUP
HDA36100AABKUP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AABKUPYP
HDA36100AABKUPYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AABKUR
HDA36100AABKUR
In Stock
From
$1,782.47
Square D
100
600
HDA36100AABKURYP
HDA36100AABKURYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AABKUS
HDA36100AABKUS
In Stock
From
$1,782.47
Square D
100
600
HDA36100AABKUSYP
HDA36100AABKUSYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AABKYP
HDA36100AABKYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AASD
HDA36100AASD
In Stock
From
$1,782.47
Square D
100
600
HDA36100AASDYP
HDA36100AASDYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AASH
HDA36100AASH
In Stock
From
$1,782.47
Square D
100
600
HDA36100AASHYP
HDA36100AASHYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AASJ
HDA36100AASJ
In Stock
From
$1,782.47
Square D
100
600
HDA36100AASJYP
HDA36100AASJYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AASK
HDA36100AASK
In Stock
From
$1,782.47
Square D
100
600
HDA36100AASKYP
HDA36100AASKYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AASL
HDA36100AASL
In Stock
From
$1,782.47
Square D
100
600
HDA36100AASLYP
HDA36100AASLYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AASN
HDA36100AASN
In Stock
From
$1,782.47
Square D
100
600
HDA36100AASNYP
HDA36100AASNYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100AASP
HDA36100AASP
In Stock
From
$1,782.47
Square D
100
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.