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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
NEF423015
NEF423015
In Stock
From
$583.20
Federal Pacific
NEF4330705C
NEF4330705C
In Stock
From
$3.67
Federal Pacific
NEF437020R
NEF437020R
In Stock
From
$2.22
Federal Pacific
NEG623030
NEG623030
In Stock
From
$2.24
Federal Pacific
NEG633030
NEG633030
In Stock
From
$4.49
Federal Pacific
NEJ22150
NEJ22150
In Stock
From
$21.88
Federal Pacific
NEJ232150
NEJ232150
In Stock
From
$11.24
Federal Pacific
NEJ3150
NEJ3150
In Stock
From
$149.30
Federal Pacific
NF63015
NF63015
In Stock
From
$4.49
Federal Pacific
NFJ621090
NFJ621090
In Stock
From
$4.49
Federal Pacific
NFJ621100
NFJ621100
In Stock
From
$2.58
Federal Pacific
NFJ621125
NFJ621125
In Stock
From
$16.64
Federal Pacific
NFJ621175
NFJ621175
In Stock
From
$34.89
Federal Pacific
NFJ621225
NFJ621225
In Stock
From
$19.20
Federal Pacific
NFJ631225NA
NFJ631225NA
In Stock
From
$133.67
Federal Pacific
NFJ632125-400HZ
NFJ632125-400HZ
In Stock
From
$2.11
Federal Pacific
NFJ632200
NFJ632200
In Stock
From
$212.81
Federal Pacific
NFS631015A
NFS631015A
In Stock
From
$13.96
Federal Pacific
NFS631020
NFS631020
In Stock
From
$13.96
Federal Pacific
NFS631025
NFS631025
In Stock
From
$13.96
Federal Pacific
NFS631030
NFS631030
In Stock
From
$13.96
Federal Pacific
NFS631040
NFS631040
In Stock
From
$13.96
Federal Pacific
NJ621125
NJ621125
In Stock
From
$222.67
Federal Pacific
NJ621175
NJ621175
In Stock
From
$27.91
Federal Pacific
Popular Molded Case Circuit Breaker Manufacturers
Eaton
Square D
ABB
Siemens

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.