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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
NM631175
NM631175
In Stock
From
$1,885.11
Federal Pacific
175
600
040
040
Limited Stock
From
Get Price
Federal Pacific
40
120
215
215
In Stock
From
$57.29
American
15
240
50
50
In Stock
From
$34.34
Federal Pacific
50
120
NA2100NA
NA2100NA
In Stock
From
$174.79
American
100
240
NA2P100NA
NA2P100NA
In Stock
From
$218.42
American
100
240
NA2P30
NA2P30
In Stock
From
$67.28
Federal Pacific
30
240
NA2P40
NA2P40
In Stock
From
$58.53
Federal Pacific
40
240
NA2P60
NA2P60
In Stock
From
$128.79
Federal Pacific
60
240
NA2P60NA
NA2P60NA
In Stock
From
$60.48
American
60
240
NA2P90
NA2P90
In Stock
From
$174.20
American
90
240
NA35
NA35
In Stock
From
$39.45
Federal Pacific
35
120
NB111025
NB111025
In Stock
From
$48.69
Federal Pacific
25
120
NB111030H
NB111030H
In Stock
From
$21.91
Federal Pacific
30
120
NB160
NB160
In Stock
From
$23.98
American
60
120
NB2110
NB2110
In Stock
From
$288.62
Federal Pacific
110
240
NB2125H
NB2125H
In Stock
From
$312.72
American
125
240
NB221080
NB221080
In Stock
From
$381.03
Federal Pacific
80
240
NB230H
NB230H
In Stock
From
$39.92
American
30
240
NB290
NB290
In Stock
From
$21.34
American
90
240
NB2P110
NB2P110
In Stock
From
$529.33
Federal Pacific
110
240
NB2P125H
NB2P125H
In Stock
From
$216.27
Federal Pacific
125
240
NB2P15
NB2P15
In Stock
From
$43.06
American
15
240
NB2P30
NB2P30
In Stock
From
$53.16
American
30
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.