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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
HDA36050AFBKUSYP
HDA36050AFBKUSYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFBKYP
HDA36050AFBKYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFSD
HDA36050AFSD
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFSDYP
HDA36050AFSDYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFSH
HDA36050AFSH
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFSHYP
HDA36050AFSHYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFSJ
HDA36050AFSJ
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFSJYP
HDA36050AFSJYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFSK
HDA36050AFSK
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFSKYP
HDA36050AFSKYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFSL
HDA36050AFSL
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFSLYP
HDA36050AFSLYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFSN
HDA36050AFSN
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFSNYP
HDA36050AFSNYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFSP
HDA36050AFSP
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFSPYP
HDA36050AFSPYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFSR
HDA36050AFSR
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFSRYP
HDA36050AFSRYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFSV
HDA36050AFSV
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFSVYP
HDA36050AFSVYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFUA
HDA36050AFUA
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFUAYP
HDA36050AFUAYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFUD
HDA36050AFUD
In Stock
From
$1,201.01
Square D
50
600
HDA36050AFUDYP
HDA36050AFUDYP
In Stock
From
$1,201.01
Square D
50
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.