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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
CLF63B080
CLF63B080
In Stock
From
$68.53
Siemens
80
600
CLF63B125
CLF63B125
In Stock
From
$1,481.38
Siemens
125
600
CLF63B175
CLF63B175
In Stock
From
$1,425.60
Siemens
175
600
CLF63B200
CLF63B200
In Stock
From
$963.86
Siemens
200
600
CLF63B250
CLF63B250
In Stock
From
$1,306.27
Siemens
250
600
E21B020
E21B020
In Stock
From
$18.23
Siemens
20
120
E21B030
E21B030
In Stock
From
$53.08
ITE
30
120
E21B040
E21B040
In Stock
From
$37.92
ITE
40
120
E21B045
E21B045
In Stock
From
$24.37
Siemens
45
120
E21B050
E21B050
In Stock
From
$34.56
Siemens
50
120
E21B070
E21B070
In Stock
From
$38.39
ITE
70
120
E21B100
E21B100
In Stock
From
$59.66
Siemens
100
120
E22B020
E22B020
In Stock
From
$76.10
Siemens
20
240
E22B040
E22B040
In Stock
From
$77.57
Siemens
40
240
E22B050
E22B050
In Stock
From
$86.11
ITE
50
240
E22B060
E22B060
In Stock
From
$124.07
ITE
60
240
E22B070
E22B070
In Stock
From
$65.67
Siemens
70
240
E22B080
E22B080
In Stock
From
$82.41
Siemens
80
240
E22B090
E22B090
In Stock
From
$154.80
Siemens
90
240
E23B015
E23B015
In Stock
From
$32.95
ITE
15
240
E23B020
E23B020
In Stock
From
$25.03
ITE
20
240
E23B025
E23B025
In Stock
From
$149.23
Siemens
25
240
E23B030
E23B030
In Stock
From
$114.47
Siemens
30
240
E23B035
E23B035
In Stock
From
$66.30
Siemens
35
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.