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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
HDA36100U43XBKSJYP
HDA36100U43XBKSJYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKSK
HDA36100U43XBKSK
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKSKYP
HDA36100U43XBKSKYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKSL
HDA36100U43XBKSL
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKSLYP
HDA36100U43XBKSLYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKSN
HDA36100U43XBKSN
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKSNYP
HDA36100U43XBKSNYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKSP
HDA36100U43XBKSP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKSPYP
HDA36100U43XBKSPYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKSR
HDA36100U43XBKSR
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKSRYP
HDA36100U43XBKSRYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKSV
HDA36100U43XBKSV
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKSVYP
HDA36100U43XBKSVYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKUA
HDA36100U43XBKUA
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKUAYP
HDA36100U43XBKUAYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKUD
HDA36100U43XBKUD
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKUDYP
HDA36100U43XBKUDYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKUH
HDA36100U43XBKUH
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKUHYP
HDA36100U43XBKUHYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKUJ
HDA36100U43XBKUJ
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKUJYP
HDA36100U43XBKUJYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKUK
HDA36100U43XBKUK
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKUKYP
HDA36100U43XBKUKYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XBKUN
HDA36100U43XBKUN
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.