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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
HDA36100U43XAASJYP
HDA36100U43XAASJYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAASK
HDA36100U43XAASK
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAASKYP
HDA36100U43XAASKYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAASL
HDA36100U43XAASL
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAASLYP
HDA36100U43XAASLYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAASN
HDA36100U43XAASN
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAASNYP
HDA36100U43XAASNYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAASP
HDA36100U43XAASP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAASPYP
HDA36100U43XAASPYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAASR
HDA36100U43XAASR
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAASRYP
HDA36100U43XAASRYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAASV
HDA36100U43XAASV
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAASVYP
HDA36100U43XAASVYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAAUA
HDA36100U43XAAUA
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAAUAYP
HDA36100U43XAAUAYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAAUD
HDA36100U43XAAUD
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAAUDYP
HDA36100U43XAAUDYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAAUH
HDA36100U43XAAUH
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAAUHYP
HDA36100U43XAAUHYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAAUJ
HDA36100U43XAAUJ
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAAUJYP
HDA36100U43XAAUJYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAAUK
HDA36100U43XAAUK
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAAUKYP
HDA36100U43XAAUKYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAAUN
HDA36100U43XAAUN
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.