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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
HDA36100U43XAFUNYP
HDA36100U43XAFUNYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFUO
HDA36100U43XAFUO
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFUOYP
HDA36100U43XAFUOYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFUP
HDA36100U43XAFUP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFUPYP
HDA36100U43XAFUPYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFUR
HDA36100U43XAFUR
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFURYP
HDA36100U43XAFURYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFUS
HDA36100U43XAFUS
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFUSYP
HDA36100U43XAFUSYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFYP
HDA36100U43XAFYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBC
HDA36100U43XBC
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBCSD
HDA36100U43XBCSD
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBCSDYP
HDA36100U43XBCSDYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBCSH
HDA36100U43XBCSH
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBCSHYP
HDA36100U43XBCSHYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBCSJ
HDA36100U43XBCSJ
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBCSJYP
HDA36100U43XBCSJYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBCSK
HDA36100U43XBCSK
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBCSKYP
HDA36100U43XBCSKYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBCSL
HDA36100U43XBCSL
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBCSLYP
HDA36100U43XBCSLYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBCSN
HDA36100U43XBCSN
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBCSNYP
HDA36100U43XBCSNYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBCSP
HDA36100U43XBCSP
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.