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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
HDA36100SV
HDA36100SV
In Stock
From
$426.49
Square D
100
600
HDA36100U44XYP
HDA36100U44XYP
In Stock
From
$1,557.58
Square D
100
600
HDA36100UA
HDA36100UA
In Stock
From
$429.83
Square D
100
600
HDA36100UD
HDA36100UD
In Stock
From
$426.06
Square D
100
600
HDA36100UH
HDA36100UH
In Stock
From
$423.95
Square D
100
600
HDA36100UJ
HDA36100UJ
In Stock
From
$422.55
Square D
100
600
HDA36100UK
HDA36100UK
In Stock
From
$1,557.58
Square D
100
600
HDA36100UN
HDA36100UN
In Stock
From
$427.42
Square D
100
600
HDA36100UO
HDA36100UO
In Stock
From
$424.27
Square D
100
600
HDA36100UP
HDA36100UP
In Stock
From
$424.46
Square D
100
600
HDA36100UR
HDA36100UR
In Stock
From
$428.41
Square D
100
600
HDA36100US
HDA36100US
In Stock
From
$428.75
Square D
100
600
HDA36110SD
HDA36110SD
In Stock
From
$1,550.47
Square D
110
600
HDA36110SH
HDA36110SH
In Stock
From
$1,550.47
Square D
110
600
HDA36110SJ
HDA36110SJ
In Stock
From
$1,550.47
Square D
110
600
HDA36110SK
HDA36110SK
In Stock
From
$1,550.47
Square D
110
600
HDA36110SL
HDA36110SL
In Stock
From
$1,550.47
Square D
110
600
HDA36110SN
HDA36110SN
In Stock
From
$1,550.47
Square D
110
600
HDA36110SP
HDA36110SP
In Stock
From
$1,550.47
Square D
110
600
HDA36110SR
HDA36110SR
In Stock
From
$1,550.47
Square D
110
600
HDA36110SV
HDA36110SV
In Stock
From
$1,550.47
Square D
110
600
HDA36110UA
HDA36110UA
In Stock
From
$1,550.47
Square D
110
600
HDA36110UD
HDA36110UD
In Stock
From
$1,550.47
Square D
110
600
HDA36110UH
HDA36110UH
In Stock
From
$1,550.47
Square D
110
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.