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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
QOB120EPD
QOB120EPD
In Stock
From
$174.19
Square D
20
120
QOB120VHGFI
QOB120VHGFI
In Stock
From
$52.14
Square D
20
120
QOB2100VH
QOB2100VH
In Stock
From
$157.84
Square D
100
240
QOB2110VH
QOB2110VH
In Stock
From
$262.26
Square D
110
240
QOB2150VH
QOB2150VH
In Stock
From
$503.21
Square D
150
240
QOB220EPD
QOB220EPD
In Stock
From
$304.72
Square D
20
120
QOB220GFI
QOB220GFI
In Stock
From
$211.96
Square D
20
240
QOB220VH
QOB220VH
In Stock
From
$158.44
Square D
20
240
QOB2251021
QOB2251021
In Stock
From
$227.85
Square D
25
120
QOB230EPD
QOB230EPD
In Stock
From
$374.04
Square D
30
120
QOB230VH
QOB230VH
In Stock
From
$38.90
Square D
30
240
QOB2351021
QOB2351021
In Stock
From
$288.52
Square D
35
120
QOB2601021
QOB2601021
In Stock
From
$253.13
Square D
60
120
QOB3100
QOB3100
In Stock
From
$105.06
Square D
100
240
QOB320GFI
QOB320GFI
In Stock
From
$538.30
Square D
20
240
QOB320VH
QOB320VH
In Stock
From
$156.14
Square D
20
240
QOB325VH
QOB325VH
In Stock
From
$275.82
Square D
25
240
QOB3301021
QOB3301021
In Stock
From
$358.74
Square D
30
240
QOB330GFI
QOB330GFI
In Stock
From
$669.19
Square D
30
240
QOB330VH
QOB330VH
In Stock
From
$57.63
Square D
30
240
QOB3501021
QOB3501021
In Stock
From
$318.63
Square D
50
240
QOB350VH
QOB350VH
In Stock
From
$116.73
Square D
50
240
QOB360VH
QOB360VH
In Stock
From
$216.33
Square D
60
240
QOB390VH
QOB390VH
In Stock
From
$297.67
Square D
90
240
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.