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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
HDA36050BKUO
HDA36050BKUO
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKUOYP
HDA36050BKUOYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKUP
HDA36050BKUP
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKUPYP
HDA36050BKUPYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKUR
HDA36050BKUR
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKURYP
HDA36050BKURYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKUS
HDA36050BKUS
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKUSYP
HDA36050BKUSYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050BKYP
HDA36050BKYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050SD
HDA36050SD
In Stock
From
$1,201.01
Square D
50
600
HDA36050SDYP
HDA36050SDYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050SH
HDA36050SH
In Stock
From
$1,201.01
Square D
50
600
HDA36050SHYP
HDA36050SHYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050SJ
HDA36050SJ
In Stock
From
$1,201.01
Square D
50
600
HDA36050SJYP
HDA36050SJYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050SK
HDA36050SK
In Stock
From
$1,201.01
Square D
50
600
HDA36050SKYP
HDA36050SKYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050SL
HDA36050SL
In Stock
From
$1,201.01
Square D
50
600
HDA36050SLYP
HDA36050SLYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050SN
HDA36050SN
In Stock
From
$1,201.01
Square D
50
600
HDA36050SNYP
HDA36050SNYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050SP
HDA36050SP
In Stock
From
$1,201.01
Square D
50
600
HDA36050SPYP
HDA36050SPYP
In Stock
From
$1,201.01
Square D
50
600
HDA36050SR
HDA36050SR
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.