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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
HDA36100U43XAFSJYP
HDA36100U43XAFSJYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFSK
HDA36100U43XAFSK
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFSKYP
HDA36100U43XAFSKYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFSL
HDA36100U43XAFSL
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFSLYP
HDA36100U43XAFSLYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFSN
HDA36100U43XAFSN
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFSNYP
HDA36100U43XAFSNYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFSP
HDA36100U43XAFSP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFSPYP
HDA36100U43XAFSPYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFSR
HDA36100U43XAFSR
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFSRYP
HDA36100U43XAFSRYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFSV
HDA36100U43XAFSV
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFSVYP
HDA36100U43XAFSVYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFUA
HDA36100U43XAFUA
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFUAYP
HDA36100U43XAFUAYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFUD
HDA36100U43XAFUD
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFUDYP
HDA36100U43XAFUDYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFUH
HDA36100U43XAFUH
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFUHYP
HDA36100U43XAFUHYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFUJ
HDA36100U43XAFUJ
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFUJYP
HDA36100U43XAFUJYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFUK
HDA36100U43XAFUK
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFUKYP
HDA36100U43XAFUKYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100U43XAFUN
HDA36100U43XAFUN
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.