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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
HDA36030ABBKUSYP
HDA36030ABBKUSYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABBKYP
HDA36030ABBKYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABSD
HDA36030ABSD
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABSDYP
HDA36030ABSDYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABSH
HDA36030ABSH
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABSHYP
HDA36030ABSHYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABSJ
HDA36030ABSJ
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABSJYP
HDA36030ABSJYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABSK
HDA36030ABSK
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABSKYP
HDA36030ABSKYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABSL
HDA36030ABSL
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABSLYP
HDA36030ABSLYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABSN
HDA36030ABSN
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABSNYP
HDA36030ABSNYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABSP
HDA36030ABSP
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABSPYP
HDA36030ABSPYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABSR
HDA36030ABSR
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABSRYP
HDA36030ABSRYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABSV
HDA36030ABSV
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABSVYP
HDA36030ABSVYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABUA
HDA36030ABUA
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABUAYP
HDA36030ABUAYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABUD
HDA36030ABUD
In Stock
From
$1,179.92
Square D
30
600
HDA36030ABUDYP
HDA36030ABUDYP
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.