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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
HDA36050BKSKYP
HDA36050BKSKYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKSL
HDA36050BKSL
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKSLYP
HDA36050BKSLYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKSN
HDA36050BKSN
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKSNYP
HDA36050BKSNYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKSP
HDA36050BKSP
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKSPYP
HDA36050BKSPYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKSR
HDA36050BKSR
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKSRYP
HDA36050BKSRYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKSV
HDA36050BKSV
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKSVYP
HDA36050BKSVYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKUA
HDA36050BKUA
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKUAYP
HDA36050BKUAYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKUD
HDA36050BKUD
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKUDYP
HDA36050BKUDYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKUH
HDA36050BKUH
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKUHYP
HDA36050BKUHYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKUJ
HDA36050BKUJ
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKUJYP
HDA36050BKUJYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKUK
HDA36050BKUK
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKUKYP
HDA36050BKUKYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKUN
HDA36050BKUN
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKUNYP
HDA36050BKUNYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKUO
HDA36050BKUO
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.