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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
QJL32100
QJL32100
In Stock
From
$2,084.28
Square D
100
240
QJL32150
QJL32150
In Stock
From
$1,992.94
Schneider Electric
150
240
QJL32225
QJL32225
In Stock
From
$1,611.85
Schneider Electric
225
240
QO115GFI
QO115GFI
In Stock
From
$13.27
Square D
15
120
QO115GFI1201
QO115GFI1201
In Stock
From
$222.94
Square D
15
120
QO125GFI
QO125GFI
In Stock
From
$88.25
Square D
25
120
QO125VHGFI
QO125VHGFI
In Stock
From
$163.46
Square D
25
120
QO130VHGFI
QO130VHGFI
In Stock
From
$326.87
Square D
30
120
QO2000
QO2000
In Stock
From
$64.22
Square D
100
240
QO215VH
QO215VH
In Stock
From
$82.15
Square D
15
120
QO220
QO220
In Stock
From
$19.30
Square D
20
240
QO220CAFI
QO220CAFI
In Stock
From
$338.47
Square D
20
240
QO220EPD
QO220EPD
In Stock
From
$411.11
Square D
20
240
QO220VH
QO220VH
In Stock
From
$68.51
Square D
20
120
QO225H
QO225H
In Stock
From
$100.35
Square D
25
240
QO225VH
QO225VH
In Stock
From
$123.43
Square D
25
120
QO230EPD
QO230EPD
In Stock
From
$261.97
Square D
30
240
QO230SWN
QO230SWN
In Stock
From
$54.39
Square D
30
240
QO230VH
QO230VH
In Stock
From
$76.06
Square D
30
120
QO240EPD
QO240EPD
In Stock
From
$207.97
Square D
40
240
QO245
QO245
In Stock
From
$15.75
Square D
45
240
QO250VH
QO250VH
In Stock
From
$64.53
Square D
50
120
QO260VH
QO260VH
In Stock
From
$64.97
Square D
60
120
QO270VH
QO270VH
In Stock
From
$83.92
Square D
70
120
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.