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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
HFXD63S250A
HFXD63S250A
In Stock
From
$640.41
Siemens
250
600
HFXD63S250AL
HFXD63S250AL
In Stock
From
$1,762.06
Siemens
250
600
HGA36070SD
HGA36070SD
In Stock
From
$550.70
Square D
70
600
HGA36070SH
HGA36070SH
In Stock
From
$548.30
Square D
70
600
HGA36070SJ
HGA36070SJ
In Stock
From
$551.10
Square D
70
600
HGA36070SK
HGA36070SK
In Stock
From
$550.78
Square D
70
600
HGA36070SL
HGA36070SL
In Stock
From
$551.84
Square D
70
600
HGA36070SN
HGA36070SN
In Stock
From
$551.54
Square D
70
600
HGA36070SP
HGA36070SP
In Stock
From
$548.78
Square D
70
600
HGA36070SR
HGA36070SR
In Stock
From
$555.26
Square D
70
600
HGA36070SV
HGA36070SV
In Stock
From
$548.23
Square D
70
600
HGA36070UA
HGA36070UA
In Stock
From
$554.77
Square D
70
600
HGA36070UD
HGA36070UD
In Stock
From
$553.46
Square D
70
600
HGA36070UH
HGA36070UH
In Stock
From
$555.24
Square D
70
600
HGA36070UJ
HGA36070UJ
In Stock
From
$614.68
Square D
70
600
HGA36070UK
HGA36070UK
In Stock
From
$548.04
Square D
70
600
HGA36070UN
HGA36070UN
In Stock
From
$619.20
Square D
70
600
HGA36070UO
HGA36070UO
In Stock
From
$553.78
Square D
70
600
HGA36070UP
HGA36070UP
In Stock
From
$549.06
Square D
70
600
HGA36070UR
HGA36070UR
In Stock
From
$623.44
Square D
70
600
HGA36070US
HGA36070US
In Stock
From
$552.59
Square D
70
600
HGA36090SD
HGA36090SD
In Stock
From
$1,669.79
Square D
90
600
HGA36090SH
HGA36090SH
In Stock
From
$1,669.79
Square D
90
600
HGA36090SJ
HGA36090SJ
In Stock
From
$1,669.79
Square D
90
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.