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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
HDA36100BKSHYP
HDA36100BKSHYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKSJ
HDA36100BKSJ
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKSJYP
HDA36100BKSJYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKSK
HDA36100BKSK
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKSKYP
HDA36100BKSKYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKSL
HDA36100BKSL
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKSLYP
HDA36100BKSLYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKSN
HDA36100BKSN
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKSNYP
HDA36100BKSNYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKSP
HDA36100BKSP
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKSPYP
HDA36100BKSPYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKSR
HDA36100BKSR
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKSRYP
HDA36100BKSRYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKSV
HDA36100BKSV
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKSVYP
HDA36100BKSVYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKUA
HDA36100BKUA
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKUAYP
HDA36100BKUAYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKUD
HDA36100BKUD
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKUDYP
HDA36100BKUDYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKUH
HDA36100BKUH
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKUHYP
HDA36100BKUHYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKUJ
HDA36100BKUJ
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKUJYP
HDA36100BKUJYP
In Stock
From
$1,782.47
Square D
100
600
HDA36100BKUK
HDA36100BKUK
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.