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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
HDA36100U43XAEBKUS
HDA36100U43XAEBKUS
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAEBKUSYP
HDA36100U43XAEBKUSYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAEBKYP
HDA36100U43XAEBKYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAESD
HDA36100U43XAESD
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAESDYP
HDA36100U43XAESDYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAESH
HDA36100U43XAESH
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAESHYP
HDA36100U43XAESHYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAESJ
HDA36100U43XAESJ
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAESJYP
HDA36100U43XAESJYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAESK
HDA36100U43XAESK
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAESKYP
HDA36100U43XAESKYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAESL
HDA36100U43XAESL
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAESLYP
HDA36100U43XAESLYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAESN
HDA36100U43XAESN
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAESNYP
HDA36100U43XAESNYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAESP
HDA36100U43XAESP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAESPYP
HDA36100U43XAESPYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAESR
HDA36100U43XAESR
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAESRYP
HDA36100U43XAESRYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAESV
HDA36100U43XAESV
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAESVYP
HDA36100U43XAESVYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAEUA
HDA36100U43XAEUA
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAEUAYP
HDA36100U43XAEUAYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAEUD
HDA36100U43XAEUD
In Stock
From
$1,782.47
Square D
100
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.