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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
HDA36125BKUNYP
HDA36125BKUNYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKUO
HDA36125BKUO
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKUOYP
HDA36125BKUOYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKUP
HDA36125BKUP
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKUPYP
HDA36125BKUPYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKUR
HDA36125BKUR
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKURYP
HDA36125BKURYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKUS
HDA36125BKUS
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKUSYP
HDA36125BKUSYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125BKYP
HDA36125BKYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125SDYP
HDA36125SDYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125SHYP
HDA36125SHYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125SJYP
HDA36125SJYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125SKYP
HDA36125SKYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125SLYP
HDA36125SLYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125SNYP
HDA36125SNYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125SPYP
HDA36125SPYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125SRYP
HDA36125SRYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125SVYP
HDA36125SVYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125UAYP
HDA36125UAYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125UDYP
HDA36125UDYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125UHYP
HDA36125UHYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125UJYP
HDA36125UJYP
In Stock
From
$1,646.69
Square D
125
600
HDA36125UKYP
HDA36125UKYP
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.