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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
NBN221020
NBN221020
In Stock
From
$39.86
American
20
240
NC0215
NC0215
In Stock
From
$46.47
American
15
240
L3P15
L3P15
In Stock
From
$69.98
American
15
240
NB315-FLAT-TOP
NB315-FLAT-TOP
In Stock
From
$203.04
American
15
240
NB320-FLAT-TOP
NB320-FLAT-TOP
In Stock
From
$285.53
American
20
240
NB325-FLAT-TOP
NB325-FLAT-TOP
In Stock
From
$283.84
American
25
240
NB330-FLAT-TOP
NB330-FLAT-TOP
In Stock
From
$105.05
American
30
240
NB335-FLAT-TOP
NB335-FLAT-TOP
In Stock
From
$284.88
Federal Pacific
35
240
NB340-FLAT-TOP
NB340-FLAT-TOP
In Stock
From
$269.15
Federal Pacific
40
240
NB345-FLAT-TOP
NB345-FLAT-TOP
In Stock
From
$324.29
American
45
240
NB350-FLAT-TOP
NB350-FLAT-TOP
In Stock
From
$233.84
Federal Pacific
50
240
NB3P15-FLAT-TOP
NB3P15-FLAT-TOP
In Stock
From
$174.88
Federal Pacific
15
240
NB3P20-FLAT-TOP
NB3P20-FLAT-TOP
In Stock
From
$263.83
Federal Pacific
20
240
NB3P25-FLAT-TOP
NB3P25-FLAT-TOP
In Stock
From
$273.16
Federal Pacific
25
240
NB3P30-FLAT-TOP
NB3P30-FLAT-TOP
In Stock
From
$105.05
American
30
240
NB3P35-FLAT-TOP
NB3P35-FLAT-TOP
In Stock
From
$284.88
Federal Pacific
35
240
NB3P40-FLAT-TOP
NB3P40-FLAT-TOP
In Stock
From
$269.15
Federal Pacific
40
240
NB3P45-FLAT-TOP
NB3P45-FLAT-TOP
In Stock
From
$325.25
American
45
240
NB3P50-FLAT-TOP
NB3P50-FLAT-TOP
In Stock
From
$324.30
American
50
240
NE223060
NE223060
In Stock
From
$72.16
American
60
240
NEF423070
NEF423070
In Stock
From
$133.40
American
70
480
NEF431010
NEF431010
In Stock
From
$423.59
American
10
480
NEF431060
NEF431060
In Stock
From
$470.61
American
60
480
NEF433030R
NEF433030R
In Stock
From
$164.22
Federal Pacific
30
480
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.