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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
HDA36100U43XAEUDYP
HDA36100U43XAEUDYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAEUH
HDA36100U43XAEUH
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAEUHYP
HDA36100U43XAEUHYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAEUJ
HDA36100U43XAEUJ
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAEUJYP
HDA36100U43XAEUJYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAEUK
HDA36100U43XAEUK
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAEUKYP
HDA36100U43XAEUKYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAEUN
HDA36100U43XAEUN
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAEUNYP
HDA36100U43XAEUNYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAEUO
HDA36100U43XAEUO
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAEUOYP
HDA36100U43XAEUOYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAEUP
HDA36100U43XAEUP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAEUPYP
HDA36100U43XAEUPYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAEUR
HDA36100U43XAEUR
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAEURYP
HDA36100U43XAEURYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAEUS
HDA36100U43XAEUS
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAEUSYP
HDA36100U43XAEUSYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAEYP
HDA36100U43XAEYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAF
HDA36100U43XAF
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFBC
HDA36100U43XAFBC
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFBCSD
HDA36100U43XAFBCSD
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFBCSDYP
HDA36100U43XAFBCSDYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFBCSH
HDA36100U43XAFBCSH
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFBCSHYP
HDA36100U43XAFBCSHYP
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.