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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
HGA36050BKSR
HGA36050BKSR
In Stock
From
$778.84
Square D
50
600
HGA36050BKSRYP
HGA36050BKSRYP
In Stock
From
$778.84
Square D
50
600
HGA36050BKSV
HGA36050BKSV
In Stock
From
$778.84
Square D
50
600
HGA36050BKSVYP
HGA36050BKSVYP
In Stock
From
$778.84
Square D
50
600
HGA36050BKUA
HGA36050BKUA
In Stock
From
$778.84
Square D
50
600
HGA36050BKUAYP
HGA36050BKUAYP
In Stock
From
$778.84
Square D
50
600
HGA36050BKUD
HGA36050BKUD
In Stock
From
$778.84
Square D
50
600
HGA36050BKUDYP
HGA36050BKUDYP
In Stock
From
$778.84
Square D
50
600
HGA36050BKUH
HGA36050BKUH
In Stock
From
$778.84
Square D
50
600
HGA36050BKUHYP
HGA36050BKUHYP
In Stock
From
$778.84
Square D
50
600
HGA36050BKUJ
HGA36050BKUJ
In Stock
From
$778.84
Square D
50
600
HGA36050BKUJYP
HGA36050BKUJYP
In Stock
From
$778.84
Square D
50
600
HGA36050BKUK
HGA36050BKUK
In Stock
From
$778.84
Square D
50
600
HGA36050BKUKYP
HGA36050BKUKYP
In Stock
From
$778.84
Square D
50
600
HGA36050BKUN
HGA36050BKUN
In Stock
From
$778.84
Square D
50
600
HGA36050BKUNYP
HGA36050BKUNYP
In Stock
From
$778.84
Square D
50
600
HGA36050BKUO
HGA36050BKUO
In Stock
From
$778.84
Square D
50
600
HGA36050BKUOYP
HGA36050BKUOYP
In Stock
From
$778.84
Square D
50
600
HGA36050BKUP
HGA36050BKUP
In Stock
From
$778.84
Square D
50
600
HGA36050BKUPYP
HGA36050BKUPYP
In Stock
From
$778.84
Square D
50
600
HGA36050BKUR
HGA36050BKUR
In Stock
From
$778.84
Square D
50
600
HGA36050BKURYP
HGA36050BKURYP
In Stock
From
$778.84
Square D
50
600
HGA36050BKUS
HGA36050BKUS
In Stock
From
$778.84
Square D
50
600
HGA36050BKUSYP
HGA36050BKUSYP
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.