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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
HDA36090AASL
HDA36090AASL
In Stock
From
$1,080.28
Square D
90
600
HDA36090AASLYP
HDA36090AASLYP
In Stock
From
$1,080.28
Square D
90
600
HDA36090AASN
HDA36090AASN
In Stock
From
$1,080.28
Square D
90
600
HDA36090AASNYP
HDA36090AASNYP
In Stock
From
$1,080.28
Square D
90
600
HDA36090AASP
HDA36090AASP
In Stock
From
$1,080.28
Square D
90
600
HDA36090AASPYP
HDA36090AASPYP
In Stock
From
$1,080.28
Square D
90
600
HDA36090AASR
HDA36090AASR
In Stock
From
$1,080.28
Square D
90
600
HDA36090AASRYP
HDA36090AASRYP
In Stock
From
$1,080.28
Square D
90
600
HDA36090AASV
HDA36090AASV
In Stock
From
$1,080.28
Square D
90
600
HDA36090AASVYP
HDA36090AASVYP
In Stock
From
$1,080.28
Square D
90
600
HDA36090AAUA
HDA36090AAUA
In Stock
From
$1,080.28
Square D
90
600
HDA36090AAUAYP
HDA36090AAUAYP
In Stock
From
$1,080.28
Square D
90
600
HDA36090AAUD
HDA36090AAUD
In Stock
From
$1,080.28
Square D
90
600
HDA36090AAUH
HDA36090AAUH
In Stock
From
$1,080.28
Square D
90
600
HDA36090AAUHYP
HDA36090AAUHYP
In Stock
From
$1,080.28
Square D
90
600
HDA36090AAUJ
HDA36090AAUJ
In Stock
From
$1,080.28
Square D
90
600
HDA36090AAUJYP
HDA36090AAUJYP
In Stock
From
$1,080.28
Square D
90
600
HDA36090AAUK
HDA36090AAUK
In Stock
From
$1,080.28
Square D
90
600
HDA36090AAUKYP
HDA36090AAUKYP
In Stock
From
$1,080.28
Square D
90
600
HDA36090AAUN
HDA36090AAUN
In Stock
From
$1,080.28
Square D
90
600
HDA36090AAUNYP
HDA36090AAUNYP
In Stock
From
$1,080.28
Square D
90
600
HDA36090AAUO
HDA36090AAUO
In Stock
From
$1,080.28
Square D
90
600
HDA36090AAUOYP
HDA36090AAUOYP
In Stock
From
$1,080.28
Square D
90
600
HDA36090AAUP
HDA36090AAUP
In Stock
From
$1,080.28
Square D
90
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.