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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
HDA36020BKUKYP
HDA36020BKUKYP
In Stock
From
$801.77
Square D
20
600
HDA36020BKUN
HDA36020BKUN
In Stock
From
$801.77
Square D
20
600
HDA36020BKUNYP
HDA36020BKUNYP
In Stock
From
$801.77
Square D
20
600
HDA36020BKUO
HDA36020BKUO
In Stock
From
$801.77
Square D
20
600
HDA36020BKUOYP
HDA36020BKUOYP
In Stock
From
$801.77
Square D
20
600
HDA36020BKUP
HDA36020BKUP
In Stock
From
$801.77
Square D
20
600
HDA36020BKUPYP
HDA36020BKUPYP
In Stock
From
$801.77
Square D
20
600
HDA36020BKUR
HDA36020BKUR
In Stock
From
$801.77
Square D
20
600
HDA36020BKURYP
HDA36020BKURYP
In Stock
From
$801.77
Square D
20
600
HDA36020BKUS
HDA36020BKUS
In Stock
From
$801.77
Square D
20
600
HDA36020BKUSYP
HDA36020BKUSYP
In Stock
From
$801.77
Square D
20
600
HDA36020BKYP
HDA36020BKYP
In Stock
From
$801.77
Square D
20
600
HDA36020SD
HDA36020SD
In Stock
From
$801.77
Square D
20
600
HDA36020SDYP
HDA36020SDYP
In Stock
From
$801.77
Square D
20
600
HDA36020SH
HDA36020SH
In Stock
From
$801.77
Square D
20
600
HDA36020SHYP
HDA36020SHYP
In Stock
From
$801.77
Square D
20
600
HDA36020SJ
HDA36020SJ
In Stock
From
$801.77
Square D
20
600
HDA36020SJYP
HDA36020SJYP
In Stock
From
$801.77
Square D
20
600
HDA36020SK
HDA36020SK
In Stock
From
$801.77
Square D
20
600
HDA36020SKYP
HDA36020SKYP
In Stock
From
$801.77
Square D
20
600
HDA36020SL
HDA36020SL
In Stock
From
$801.77
Square D
20
600
HDA36020SLYP
HDA36020SLYP
In Stock
From
$801.77
Square D
20
600
HDA36020SN
HDA36020SN
In Stock
From
$801.77
Square D
20
600
HDA36020SNYP
HDA36020SNYP
In Stock
From
$801.77
Square D
20
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.