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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.
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Part Number
PRICE
Manufacturer
NASWD140
NASWD140
In Stock
From
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Federal Pacific
NJJ421300
NJJ421300
In Stock
From
Get Price
Federal Pacific
L3P20
L3P20
In Stock
From
$88.10
Federal Pacific
LFCBJL400SN
LFCBJL400SN
In Stock
From
$831.09
Federal Pacific
NEF421050R
NEF421050R
In Stock
From
$8.47
Federal Pacific
HF631100STF-3
HF631100STF-3
In Stock
From
$394.06
Federal Pacific
NCNI115
NCNI115
In Stock
From
$12.76
Federal Pacific
NE233030 W/ST
NE233030 W/ST
In Stock
From
$163.24
Federal Pacific
NFS631100
NFS631100
In Stock
From
$295.62
Federal Pacific
D64L1A50
D64L1A50
In Stock
From
$91.44
Federal Pacific
HEF111020
HEF111020
In Stock
From
$0.46
Federal Pacific
HEF111050
HEF111050
In Stock
From
$0.46
Federal Pacific
HEF621030
HEF621030
In Stock
From
$0.89
Federal Pacific
HEF621070
HEF621070
In Stock
From
$0.93
Federal Pacific
HEG3030
HEG3030
In Stock
From
Get Price
Federal Pacific
HEG633050
HEG633050
In Stock
From
$22.22
Federal Pacific
HEJ321050
HEJ321050
In Stock
From
$11.24
Federal Pacific
HFJ632100R
HFJ632100R
In Stock
From
$7.36
Federal Pacific
HJL632125
HJL632125
In Stock
From
$44.44
Federal Pacific
HJL632150
HJL632150
In Stock
From
$44.44
Federal Pacific
HM631000
HM631000
In Stock
From
$503.65
Federal Pacific
HM631000R
HM631000R
In Stock
From
$139.60
Federal Pacific
HM631250R
HM631250R
In Stock
From
$139.60
Federal Pacific
HM631300
HM631300
In Stock
From
$67.44
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.