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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
HDA36030AEUH
HDA36030AEUH
In Stock
From
$1,179.92
Square D
30
600
HDA36030AEUHYP
HDA36030AEUHYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AEUJ
HDA36030AEUJ
In Stock
From
$1,179.92
Square D
30
600
HDA36030AEUJYP
HDA36030AEUJYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AEUK
HDA36030AEUK
In Stock
From
$1,179.92
Square D
30
600
HDA36030AEUKYP
HDA36030AEUKYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AEUN
HDA36030AEUN
In Stock
From
$1,179.92
Square D
30
600
HDA36030AEUNYP
HDA36030AEUNYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AEUO
HDA36030AEUO
In Stock
From
$1,179.92
Square D
30
600
HDA36030AEUOYP
HDA36030AEUOYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AEUP
HDA36030AEUP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AEUPYP
HDA36030AEUPYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AEUR
HDA36030AEUR
In Stock
From
$1,179.92
Square D
30
600
HDA36030AEURYP
HDA36030AEURYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AEUS
HDA36030AEUS
In Stock
From
$1,179.92
Square D
30
600
HDA36030AEUSYP
HDA36030AEUSYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AEYP
HDA36030AEYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AF
HDA36030AF
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFBC
HDA36030AFBC
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFBCSD
HDA36030AFBCSD
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFBCSDYP
HDA36030AFBCSDYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFBCSH
HDA36030AFBCSH
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFBCSHYP
HDA36030AFBCSHYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFBCSJ
HDA36030AFBCSJ
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.