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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
HDA36150U31XBKUJ
HDA36150U31XBKUJ
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XBKUJYP
HDA36150U31XBKUJYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XBKUK
HDA36150U31XBKUK
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XBKUKYP
HDA36150U31XBKUKYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XBKUN
HDA36150U31XBKUN
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XBKUNYP
HDA36150U31XBKUNYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XBKUO
HDA36150U31XBKUO
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XBKUOYP
HDA36150U31XBKUOYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XBKUP
HDA36150U31XBKUP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XBKUPYP
HDA36150U31XBKUPYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XBKUR
HDA36150U31XBKUR
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XBKURYP
HDA36150U31XBKURYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XBKUS
HDA36150U31XBKUS
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XBKUSYP
HDA36150U31XBKUSYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XBKYP
HDA36150U31XBKYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XSD
HDA36150U31XSD
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XSDYP
HDA36150U31XSDYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XSH
HDA36150U31XSH
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XSHYP
HDA36150U31XSHYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XSJ
HDA36150U31XSJ
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XSJYP
HDA36150U31XSJYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XSK
HDA36150U31XSK
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XSKYP
HDA36150U31XSKYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U31XSL
HDA36150U31XSL
In Stock
From
$2,713.52
Square D
150
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.