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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
HDA36030AFSV
HDA36030AFSV
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFSVYP
HDA36030AFSVYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFUA
HDA36030AFUA
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFUAYP
HDA36030AFUAYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFUD
HDA36030AFUD
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFUDYP
HDA36030AFUDYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFUH
HDA36030AFUH
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFUHYP
HDA36030AFUHYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFUJ
HDA36030AFUJ
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFUJYP
HDA36030AFUJYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFUK
HDA36030AFUK
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFUKYP
HDA36030AFUKYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFUN
HDA36030AFUN
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFUNYP
HDA36030AFUNYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFUO
HDA36030AFUO
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFUOYP
HDA36030AFUOYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFUP
HDA36030AFUP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFUPYP
HDA36030AFUPYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFUR
HDA36030AFUR
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFURYP
HDA36030AFURYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFUS
HDA36030AFUS
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFUSYP
HDA36030AFUSYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030AFYP
HDA36030AFYP
In Stock
From
$1,179.92
Square D
30
600
HDA36030BC
HDA36030BC
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.