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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
HDA36020AAUAYP
HDA36020AAUAYP
In Stock
From
$801.77
Square D
20
600
HDA36020AAUD
HDA36020AAUD
In Stock
From
$801.77
Square D
20
600
HDA36020AAUDYP
HDA36020AAUDYP
In Stock
From
$801.77
Square D
20
600
HDA36020AAUH
HDA36020AAUH
In Stock
From
$801.77
Square D
20
600
HDA36020AAUHYP
HDA36020AAUHYP
In Stock
From
$801.77
Square D
20
600
HDA36020AAUJ
HDA36020AAUJ
In Stock
From
$801.77
Square D
20
600
HDA36020AAUJYP
HDA36020AAUJYP
In Stock
From
$801.77
Square D
20
600
HDA36020AAUK
HDA36020AAUK
In Stock
From
$801.77
Square D
20
600
HDA36020AAUKYP
HDA36020AAUKYP
In Stock
From
$801.77
Square D
20
600
HDA36020AAUN
HDA36020AAUN
In Stock
From
$801.77
Square D
20
600
HDA36020AAUNYP
HDA36020AAUNYP
In Stock
From
$801.77
Square D
20
600
HDA36020AAUO
HDA36020AAUO
In Stock
From
$801.77
Square D
20
600
HDA36020AAUOYP
HDA36020AAUOYP
In Stock
From
$801.77
Square D
20
600
HDA36020AAUP
HDA36020AAUP
In Stock
From
$801.77
Square D
20
600
HDA36020AAUPYP
HDA36020AAUPYP
In Stock
From
$801.77
Square D
20
600
HDA36020AAUR
HDA36020AAUR
In Stock
From
$801.77
Square D
20
600
HDA36020AAURYP
HDA36020AAURYP
In Stock
From
$801.77
Square D
20
600
HDA36020AAUS
HDA36020AAUS
In Stock
From
$801.77
Square D
20
600
HDA36020AAUSYP
HDA36020AAUSYP
In Stock
From
$801.77
Square D
20
600
HDA36020AAYP
HDA36020AAYP
In Stock
From
$801.77
Square D
20
600
HDA36020AB
HDA36020AB
In Stock
From
$801.77
Square D
20
600
HDA36020ABBC
HDA36020ABBC
In Stock
From
$801.77
Square D
20
600
HDA36020ABBCSD
HDA36020ABBCSD
In Stock
From
$801.77
Square D
20
600
HDA36020ABBCSDYP
HDA36020ABBCSDYP
In Stock
From
$801.77
Square D
20
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.