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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
QOU110
QOU110
In Stock
From
$39.20
Square D
10
120
QOU1151042
QOU1151042
In Stock
From
$90.99
Square D
15
120
QOU120
QOU120
In Stock
From
$15.84
Square D
20
120
QOU130
QOU130
In Stock
From
$10.32
Square D
30
120
QOU170
QOU170
In Stock
From
$26.15
Square D
70
120
QOU21001042
QOU21001042
In Stock
From
$78.29
Square D
100
240
SDT215
SDT215
In Stock
From
$172.72
Square D
15
240
SFA1032A
SFA1032A
In Stock
From
$55.49
Square D
32
240
SFA1080A
SFA1080A
In Stock
From
$62.74
Square D
80
240
SLA3400
SLA3400
In Stock
From
$3,534.43
Square D
400
750
KA36000
KA36000
In Stock
From
$156.96
Square D
250
600
QE2125VH
QE2125VH
In Stock
From
$693.30
Square D
125
240
QE270VH
QE270VH
In Stock
From
$377.05
Square D
70
240
QE370VH
QE370VH
In Stock
From
$399.39
Square D
70
240
25640
25640
In Stock
From
$9.44
Merlin Gerin
2
240
25653
25653
In Stock
From
$29.35
Square D
1
480
25654
25654
In Stock
From
$10.89
Merlin Gerin
2
480
25657
25657
In Stock
From
$48.98
Square D
6
480
25658
25658
In Stock
From
$15.24
Merlin Gerin
10
480
25672
25672
In Stock
From
$20.05
Merlin Gerin
10
480
25698
25698
In Stock
From
$38.60
Merlin Gerin
4
240
25699
25699
In Stock
From
$12.19
Square D
6
240
25710
25710
In Stock
From
$61.32
Merlin Gerin
2
480
25712
25712
In Stock
From
$25.22
Merlin Gerin
4
480
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.