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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
HGA36045URYP
HGA36045URYP
In Stock
From
$1,368.11
Square D
45
600
HGA36045US
HGA36045US
In Stock
From
$1,368.11
Square D
45
600
HGA36045USYP
HGA36045USYP
In Stock
From
$1,368.11
Square D
45
600
HGA36045YP
HGA36045YP
In Stock
From
$1,368.11
Square D
45
600
HGA36050AA
HGA36050AA
In Stock
From
$778.84
Square D
50
600
HGA36050AABC
HGA36050AABC
In Stock
From
$778.84
Square D
50
600
HGA36050AABCSD
HGA36050AABCSD
In Stock
From
$778.84
Square D
50
600
HGA36050AABCSDYP
HGA36050AABCSDYP
In Stock
From
$778.84
Square D
50
600
HGA36050AABCSH
HGA36050AABCSH
In Stock
From
$778.84
Square D
50
600
HGA36050AABCSHYP
HGA36050AABCSHYP
In Stock
From
$778.84
Square D
50
600
HGA36050AABCSJ
HGA36050AABCSJ
In Stock
From
$778.84
Square D
50
600
HGA36050AABCSJYP
HGA36050AABCSJYP
In Stock
From
$778.84
Square D
50
600
HGA36050AABCSK
HGA36050AABCSK
In Stock
From
$778.84
Square D
50
600
HGA36050AABCSKYP
HGA36050AABCSKYP
In Stock
From
$778.84
Square D
50
600
HGA36050AABCSL
HGA36050AABCSL
In Stock
From
$778.84
Square D
50
600
HGA36050AABCSLYP
HGA36050AABCSLYP
In Stock
From
$778.84
Square D
50
600
HGA36050AABCSN
HGA36050AABCSN
In Stock
From
$778.84
Square D
50
600
HGA36050AABCSNYP
HGA36050AABCSNYP
In Stock
From
$778.84
Square D
50
600
HGA36050AABCSP
HGA36050AABCSP
In Stock
From
$778.84
Square D
50
600
HGA36050AABCSPYP
HGA36050AABCSPYP
In Stock
From
$778.84
Square D
50
600
HGA36050AABCSR
HGA36050AABCSR
In Stock
From
$778.84
Square D
50
600
HGA36050AABCSRYP
HGA36050AABCSRYP
In Stock
From
$778.84
Square D
50
600
HGA36050AABCSV
HGA36050AABCSV
In Stock
From
$778.84
Square D
50
600
HGA36050AABCSVYP
HGA36050AABCSVYP
In Stock
From
$778.84
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.