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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
HGA36045ABSN
HGA36045ABSN
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABSNYP
HGA36045ABSNYP
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABSP
HGA36045ABSP
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABSPYP
HGA36045ABSPYP
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABSR
HGA36045ABSR
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABSRYP
HGA36045ABSRYP
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABSV
HGA36045ABSV
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABSVYP
HGA36045ABSVYP
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABUA
HGA36045ABUA
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABUAYP
HGA36045ABUAYP
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABUD
HGA36045ABUD
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABUDYP
HGA36045ABUDYP
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABUH
HGA36045ABUH
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABUHYP
HGA36045ABUHYP
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABUJ
HGA36045ABUJ
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABUJYP
HGA36045ABUJYP
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABUK
HGA36045ABUK
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABUKYP
HGA36045ABUKYP
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABUN
HGA36045ABUN
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABUNYP
HGA36045ABUNYP
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABUO
HGA36045ABUO
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABUOYP
HGA36045ABUOYP
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABUP
HGA36045ABUP
In Stock
From
$1,368.11
Square D
45
600
HGA36045ABUPYP
HGA36045ABUPYP
In Stock
From
$1,368.11
Square D
45
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.