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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
NB111015
NB111015
In Stock
From
$25.70
Federal Pacific
15
120
NB111020
NB111020
In Stock
From
$54.84
American
20
120
NB111030
NB111030
In Stock
From
$23.70
American
30
120
NB111035
NB111035
In Stock
From
$46.39
Federal Pacific
35
120
NB115
NB115
In Stock
From
$19.52
American
15
120
NB125
NB125
In Stock
From
$800.74
Federal Pacific
125
240
NB130
NB130
In Stock
From
$47.84
Federal Pacific
30
120
NB221020
NB221020
In Stock
From
$102.06
Federal Pacific
20
240
NB230
NB230
In Stock
From
$165.35
American
30
240
NB232020
NB232020
In Stock
From
$241.85
Federal Pacific
20
240
NB240
NB240
In Stock
From
$77.49
Federal Pacific
40
240
NB260
NB260
In Stock
From
$162.30
Federal Pacific
60
240
NB270
NB270
In Stock
From
$816.94
Federal Pacific
70
240
NB3100
NB3100
In Stock
From
$560.79
Federal Pacific
100
240
NB320
NB320
In Stock
From
$179.47
Federal Pacific
20
240
NB330
NB330
In Stock
From
$53.17
Federal Pacific
30
240
NB340
NB340
In Stock
From
$194.04
American
40
240
NB370
NB370
In Stock
From
$195.00
American
70
240
NB3P30
NB3P30
In Stock
From
$177.53
Federal Pacific
30
240
NC020
NC020
In Stock
From
$13.13
Federal Pacific
20
120
NC0240
NC0240
In Stock
From
$35.48
Federal Pacific
40
240
NC220
NC220
In Stock
From
$44.91
American
20
240
NE113020
NE113020
In Stock
From
$25.51
Federal Pacific
20
120
NEF217020
NEF217020
In Stock
From
$33.43
Federal Pacific
20
277
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.