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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
HDA36040ABBKYP
HDA36040ABBKYP
In Stock
From
$911.98
Square D
40
600
HDA36040ABSD
HDA36040ABSD
In Stock
From
$911.98
Square D
40
600
HDA36040ABSDYP
HDA36040ABSDYP
In Stock
From
$911.98
Square D
40
600
HDA36040ABSH
HDA36040ABSH
In Stock
From
$911.98
Square D
40
600
HDA36040ABSHYP
HDA36040ABSHYP
In Stock
From
$911.98
Square D
40
600
HDA36040ABSJ
HDA36040ABSJ
In Stock
From
$911.98
Square D
40
600
HDA36040ABSJYP
HDA36040ABSJYP
In Stock
From
$911.98
Square D
40
600
HDA36040ABSK
HDA36040ABSK
In Stock
From
$911.98
Square D
40
600
HDA36040ABSKYP
HDA36040ABSKYP
In Stock
From
$911.98
Square D
40
600
HDA36040ABSL
HDA36040ABSL
In Stock
From
$911.98
Square D
40
600
HDA36040ABSLYP
HDA36040ABSLYP
In Stock
From
$911.98
Square D
40
600
HDA36040ABSN
HDA36040ABSN
In Stock
From
$911.98
Square D
40
600
HDA36040ABSNYP
HDA36040ABSNYP
In Stock
From
$911.98
Square D
40
600
HDA36040ABSP
HDA36040ABSP
In Stock
From
$911.98
Square D
40
600
HDA36040ABSPYP
HDA36040ABSPYP
In Stock
From
$911.98
Square D
40
600
HDA36040ABSR
HDA36040ABSR
In Stock
From
$911.98
Square D
40
600
HDA36040ABSRYP
HDA36040ABSRYP
In Stock
From
$911.98
Square D
40
600
HDA36040ABSV
HDA36040ABSV
In Stock
From
$911.98
Square D
40
600
HDA36040ABSVYP
HDA36040ABSVYP
In Stock
From
$911.98
Square D
40
600
HDA36040ABUA
HDA36040ABUA
In Stock
From
$911.98
Square D
40
600
HDA36040ABUAYP
HDA36040ABUAYP
In Stock
From
$911.98
Square D
40
600
HDA36040ABUD
HDA36040ABUD
In Stock
From
$911.98
Square D
40
600
HDA36040ABUDYP
HDA36040ABUDYP
In Stock
From
$911.98
Square D
40
600
HDA36040ABUH
HDA36040ABUH
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.