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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
HDA36040SV
HDA36040SV
In Stock
From
$648.56
Square D
40
600
HDA36040SVYP
HDA36040SVYP
In Stock
From
$648.56
Square D
40
600
HDA36040UA
HDA36040UA
In Stock
From
$648.56
Square D
40
600
HDA36040UAYP
HDA36040UAYP
In Stock
From
$648.56
Square D
40
600
HDA36040UD
HDA36040UD
In Stock
From
$648.56
Square D
40
600
HDA36040UDYP
HDA36040UDYP
In Stock
From
$648.56
Square D
40
600
HDA36040UH
HDA36040UH
In Stock
From
$648.56
Square D
40
600
HDA36040UHYP
HDA36040UHYP
In Stock
From
$648.56
Square D
40
600
HDA36040UJ
HDA36040UJ
In Stock
From
$648.56
Square D
40
600
HDA36040UJYP
HDA36040UJYP
In Stock
From
$648.56
Square D
40
600
HDA36040UK
HDA36040UK
In Stock
From
$648.56
Square D
40
600
HDA36040UKYP
HDA36040UKYP
In Stock
From
$648.56
Square D
40
600
HDA36040UN
HDA36040UN
In Stock
From
$648.56
Square D
40
600
HDA36040UNYP
HDA36040UNYP
In Stock
From
$648.56
Square D
40
600
HDA36040UO
HDA36040UO
In Stock
From
$648.56
Square D
40
600
HDA36040UOYP
HDA36040UOYP
In Stock
From
$648.56
Square D
40
600
HDA36040UP
HDA36040UP
In Stock
From
$648.56
Square D
40
600
HDA36040UPYP
HDA36040UPYP
In Stock
From
$648.56
Square D
40
600
HDA36040UR
HDA36040UR
In Stock
From
$648.56
Square D
40
600
HDA36040URYP
HDA36040URYP
In Stock
From
$648.56
Square D
40
600
HDA36040US
HDA36040US
In Stock
From
$648.56
Square D
40
600
HDA36040USYP
HDA36040USYP
In Stock
From
$648.56
Square D
40
600
HDA36040YE
HDA36040YE
In Stock
From
$659.54
Square D
40
600
HDA36040YP
HDA36040YP
In Stock
From
$648.56
Square D
40
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.