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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
HDA36125BKSJYP
HDA36125BKSJYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKSK
HDA36125BKSK
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKSKYP
HDA36125BKSKYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKSL
HDA36125BKSL
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKSLYP
HDA36125BKSLYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKSN
HDA36125BKSN
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKSNYP
HDA36125BKSNYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKSP
HDA36125BKSP
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKSPYP
HDA36125BKSPYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKSR
HDA36125BKSR
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKSRYP
HDA36125BKSRYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKSV
HDA36125BKSV
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKSVYP
HDA36125BKSVYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKUA
HDA36125BKUA
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKUAYP
HDA36125BKUAYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKUD
HDA36125BKUD
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKUDYP
HDA36125BKUDYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKUH
HDA36125BKUH
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKUHYP
HDA36125BKUHYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKUJ
HDA36125BKUJ
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKUJYP
HDA36125BKUJYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKUK
HDA36125BKUK
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKUKYP
HDA36125BKUKYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKUN
HDA36125BKUN
In Stock
From
$1,646.69
Square D
125
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.