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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
NEF433015
NEF433015
In Stock
From
$260.58
Federal Pacific
15
480
NEF433020
NEF433020
In Stock
From
$127.37
Federal Pacific
20
480
NEF433050
NEF433050
In Stock
From
$665.59
Federal Pacific
50
480
NEF433100
NEF433100
In Stock
From
$325.00
American
100
480
NEF435060
NEF435060
In Stock
From
$437.77
American
60
480
NEF437050
NEF437050
In Stock
From
$227.33
American
50
480
NEF437100
NEF437100
In Stock
From
$318.91
Federal Pacific
100
480
NEF437150
NEF437150
In Stock
From
$1,032.19
American
150
480
NEF631070
NEF631070
In Stock
From
$651.72
Federal Pacific
70
600
NFJ434200
NFJ434200
In Stock
From
$1,246.24
Federal Pacific
200
480
NFJ437250
NFJ437250
In Stock
From
$386.40
Federal Pacific
250
480
NFJ631125
NFJ631125
In Stock
From
$478.90
Federal Pacific
125
600
NFJ631200
NFJ631200
In Stock
From
$1,125.17
Federal Pacific
200
600
NJL631200
NJL631200
In Stock
From
$1,080.00
American
200
600
NJL631225
NJL631225
In Stock
From
$503.17
Federal Pacific
225
600
NJL631250
NJL631250
In Stock
From
$1,342.63
Federal Pacific
250
600
NJL631300
NJL631300
In Stock
From
$616.82
American
300
600
NJL631350
NJL631350
In Stock
From
$430.14
Federal Pacific
350
600
NJL631350R
NJL631350R
In Stock
From
$189.46
Federal Pacific
350
600
NJL631400
NJL631400
In Stock
From
$697.96
Federal Pacific
400
600
NJL631600
NJL631600
In Stock
From
$1,327.10
American
600
600
NJL632350
NJL632350
In Stock
From
$202.71
Federal Pacific
350
600
NJL632600
NJL632600
In Stock
From
$1,648.06
Federal Pacific
600
600
035
035
In Stock
From
$84.81
Federal Pacific
35
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.