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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
HDA36030BCUJ
HDA36030BCUJ
In Stock
From
$1,179.92
Square D
30
600
HDA36030BCUJYP
HDA36030BCUJYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030BCUK
HDA36030BCUK
In Stock
From
$1,179.92
Square D
30
600
HDA36030BCUKYP
HDA36030BCUKYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030BCUN
HDA36030BCUN
In Stock
From
$1,179.92
Square D
30
600
HDA36030BCUNYP
HDA36030BCUNYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030BCUO
HDA36030BCUO
In Stock
From
$1,179.92
Square D
30
600
HDA36030BCUOYP
HDA36030BCUOYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030BCUP
HDA36030BCUP
In Stock
From
$1,179.92
Square D
30
600
HDA36030BCUPYP
HDA36030BCUPYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030BCUR
HDA36030BCUR
In Stock
From
$1,179.92
Square D
30
600
HDA36030BCURYP
HDA36030BCURYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030BCUS
HDA36030BCUS
In Stock
From
$1,179.92
Square D
30
600
HDA36030BCUSYP
HDA36030BCUSYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030BCYP
HDA36030BCYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030BE
HDA36030BE
In Stock
From
$1,179.92
Square D
30
600
HDA36030BESD
HDA36030BESD
In Stock
From
$1,179.92
Square D
30
600
HDA36030BESDYP
HDA36030BESDYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030BESH
HDA36030BESH
In Stock
From
$1,179.92
Square D
30
600
HDA36030BESHYP
HDA36030BESHYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030BESJ
HDA36030BESJ
In Stock
From
$1,179.92
Square D
30
600
HDA36030BESJYP
HDA36030BESJYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030BESK
HDA36030BESK
In Stock
From
$1,179.92
Square D
30
600
HDA36030BESKYP
HDA36030BESKYP
In Stock
From
$1,179.92
Square D
30
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.