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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
HDA36040ABUHYP
HDA36040ABUHYP
In Stock
From
$911.98
Square D
40
600
HDA36040ABUJ
HDA36040ABUJ
In Stock
From
$911.98
Square D
40
600
HDA36040ABUJYP
HDA36040ABUJYP
In Stock
From
$911.98
Square D
40
600
HDA36040ABUK
HDA36040ABUK
In Stock
From
$911.98
Square D
40
600
HDA36040ABUKYP
HDA36040ABUKYP
In Stock
From
$911.98
Square D
40
600
HDA36040ABUN
HDA36040ABUN
In Stock
From
$911.98
Square D
40
600
HDA36040ABUNYP
HDA36040ABUNYP
In Stock
From
$911.98
Square D
40
600
HDA36040ABUO
HDA36040ABUO
In Stock
From
$911.98
Square D
40
600
HDA36040ABUOYP
HDA36040ABUOYP
In Stock
From
$911.98
Square D
40
600
HDA36040ABUP
HDA36040ABUP
In Stock
From
$911.98
Square D
40
600
HDA36040ABUPYP
HDA36040ABUPYP
In Stock
From
$911.98
Square D
40
600
HDA36040ABUR
HDA36040ABUR
In Stock
From
$911.98
Square D
40
600
HDA36040ABURYP
HDA36040ABURYP
In Stock
From
$911.98
Square D
40
600
HDA36040ABUS
HDA36040ABUS
In Stock
From
$911.98
Square D
40
600
HDA36040ABUSYP
HDA36040ABUSYP
In Stock
From
$911.98
Square D
40
600
HDA36040ABYP
HDA36040ABYP
In Stock
From
$911.98
Square D
40
600
HDA36040AE
HDA36040AE
In Stock
From
$911.98
Square D
40
600
HDA36040AEBC
HDA36040AEBC
In Stock
From
$911.98
Square D
40
600
HDA36040AEBCSD
HDA36040AEBCSD
In Stock
From
$911.98
Square D
40
600
HDA36040AEBCSDYP
HDA36040AEBCSDYP
In Stock
From
$911.98
Square D
40
600
HDA36040AEBCSH
HDA36040AEBCSH
In Stock
From
$911.98
Square D
40
600
HDA36040AEBCSHYP
HDA36040AEBCSHYP
In Stock
From
$911.98
Square D
40
600
HDA36040AEBCSJ
HDA36040AEBCSJ
In Stock
From
$911.98
Square D
40
600
HDA36040AEBCSJYP
HDA36040AEBCSJYP
In Stock
From
$911.98
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.