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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
HDA36150U43XSH
HDA36150U43XSH
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XSHYP
HDA36150U43XSHYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XSJ
HDA36150U43XSJ
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XSJYP
HDA36150U43XSJYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XSK
HDA36150U43XSK
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XSKYP
HDA36150U43XSKYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XSL
HDA36150U43XSL
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XSLYP
HDA36150U43XSLYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XSN
HDA36150U43XSN
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XSNYP
HDA36150U43XSNYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XSP
HDA36150U43XSP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XSPYP
HDA36150U43XSPYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XSR
HDA36150U43XSR
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XSRYP
HDA36150U43XSRYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XSV
HDA36150U43XSV
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XSVYP
HDA36150U43XSVYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XUA
HDA36150U43XUA
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XUAYP
HDA36150U43XUAYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XUD
HDA36150U43XUD
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XUDYP
HDA36150U43XUDYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XUH
HDA36150U43XUH
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XUHYP
HDA36150U43XUHYP
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XUJ
HDA36150U43XUJ
In Stock
From
$2,713.52
Square D
150
600
HDA36150U43XUJYP
HDA36150U43XUJYP
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.