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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
NA3P70
NA3P70
In Stock
From
$681.42
Federal Pacific
70
240
NA3P70-FLAT-TOP
NA3P70-FLAT-TOP
In Stock
From
$253.08
Federal Pacific
70
240
NA3P80-FLAT-TOP
NA3P80-FLAT-TOP
In Stock
From
$481.33
American
80
240
NA3P90-FLAT-TOP
NA3P90-FLAT-TOP
In Stock
From
$453.40
American
90
240
NA40
NA40
In Stock
From
$18.39
Federal Pacific
40
120
NA50
NA50
In Stock
From
$12.58
American
50
120
NA60
NA60
In Stock
From
$38.10
Federal Pacific
60
120
NB111020H
NB111020H
In Stock
From
$43.64
American
20
120
NB111040
NB111040
In Stock
From
$13.46
American
40
120
NB111045
NB111045
In Stock
From
$24.56
American
45
120
NB111050
NB111050
In Stock
From
$16.41
Federal Pacific
50
120
NB111060
NB111060
In Stock
From
$34.69
American
60
120
NB120
NB120
In Stock
From
$54.84
American
20
120
NB125H
NB125H
In Stock
From
$481.23
Federal Pacific
25
240
NB140
NB140
In Stock
From
$13.65
American
40
120
NB150
NB150
In Stock
From
$22.68
Federal Pacific
50
120
NB1P15
NB1P15
In Stock
From
$28.72
Federal Pacific
15
120
NB1P30
NB1P30
In Stock
From
$19.61
American
30
120
NB2125
NB2125
In Stock
From
$800.74
Federal Pacific
125
240
NB215
NB215
In Stock
From
$102.65
Federal Pacific
15
240
NB231015
NB231015
In Stock
From
$203.04
American
15
240
NB231020
NB231020
In Stock
From
$681.06
American
20
240
NB231030
NB231030
In Stock
From
$61.27
American
30
240
NB231090
NB231090
In Stock
From
$1,363.93
Federal Pacific
90
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.