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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
NB3P15
NB3P15
In Stock
From
$389.44
Federal Pioneer
15
240
NB3P20
NB3P20
In Stock
From
$71.97
Federal Pioneer
20
240
NB3P50
NB3P50
In Stock
From
$1,621.14
Federal Pioneer
50
240
NC140
NC140
In Stock
From
$16.37
Federal Pacific
40
120
NC20
NC20
In Stock
From
$19.39
Federal Pacific
20
120
NC225
NC225
In Stock
From
$14.79
Federal Pioneer
25
240
CJL3400NF
CJL3400NF
In Stock
From
$2,299.99
Federal Pioneer
400
600
NA15AFI
NA15AFI
In Stock
From
$250.39
Federal Pioneer
15
120
CK31000N-4P
CK31000N-4P
In Stock
From
$4,275.19
Federal Pioneer
1000
600
CK3800N-4P
CK3800N-4P
In Stock
From
$4,177.46
Federal Pioneer
800
600
0215FED
0215FED
In Stock
From
$60.82
Federal Pioneer
15
240
0220FED
0220FED
In Stock
From
$47.42
Federal Pioneer
20
240
0250FED
0250FED
In Stock
From
$51.06
Federal Pioneer
50
240
040
040
Limited Stock
From
Get Price
Federal Pacific
40
120
NAGF25
NAGF25
In Stock
From
$181.82
Federal Pacific
25
120
NB2P90
NB2P90
In Stock
From
$284.38
Federal Pioneer
90
240
NC125
NC125
In Stock
From
$80.84
Federal Pacific
25
120
NC150
NC150
In Stock
From
$10.30
Federal Pioneer
50
120
3P30FED
3P30FED
In Stock
From
$372.90
Federal Pioneer
30
240
3P50FED
3P50FED
In Stock
From
$604.15
Federal Pioneer
50
240
CJL3100HF
CJL3100HF
In Stock
From
$2,061.74
Federal Pioneer
100
600
NB30
NB30
In Stock
From
$147.96
Schneider Electric
30
240
2P100FED
2P100FED
In Stock
From
$437.87
Federal Pioneer
100
240
2P125FED
2P125FED
In Stock
From
$577.32
Federal Pioneer
125
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.