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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
Q21550CT2
Q21550CT2
In Stock
From
$72.87
Siemens
50
240
Q215AFCH
Q215AFCH
In Stock
From
$338.15
Siemens
15
240
Q22000S01
Q22000S01
In Stock
From
$143.29
Siemens
20
240
Q22020CT
Q22020CT
In Stock
From
$54.11
Siemens
20
240
Q22020CT2
Q22020CT2
In Stock
From
$41.16
Siemens
15
240
Q222150ACH
Q222150ACH
In Stock
From
$469.69
Square D
150
240
Q222200ABH
Q222200ABH
In Stock
From
$247.60
Square D
200
240
Q222200ACH
Q222200ACH
In Stock
From
$334.05
Square D
200
240
Q222225AC
Q222225AC
In Stock
From
$88.66
Square D
225
240
Q222225ACH
Q222225ACH
In Stock
From
$280.19
Square D
225
240
Q23000S01
Q23000S01
In Stock
From
$106.71
Siemens
30
240
Q23020CT2NC
Q23020CT2NC
In Stock
From
$114.53
Siemens
30
240
Q23030CT
Q23030CT
In Stock
From
$51.50
Siemens
30
240
Q230H
Q230H
In Stock
From
$42.99
Siemens
30
240
Q232110H
Q232110H
In Stock
From
$295.56
Square D
110
240
Q232125
Q232125
In Stock
From
$238.58
Square D
125
240
Q232125H
Q232125H
In Stock
From
$512.53
Square D
125
240
Q232150
Q232150
In Stock
From
$305.53
Square D
150
240
Q232175
Q232175
In Stock
From
$293.36
Square D
175
240
Q232200
Q232200
In Stock
From
$1,042.42
Square D
200
240
Q232200H
Q232200H
In Stock
From
$345.56
Square D
200
240
Q232225
Q232225
In Stock
From
$296.16
Square D
225
240
Q232225H
Q232225H
In Stock
From
$409.10
Square D
225
240
Q24000S01
Q24000S01
In Stock
From
$98.71
Siemens
40
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.