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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.
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Part Number
PRICE
Manufacturer
Amperage
Voltage
NA2P90H
NA2P90H
Limited Stock
From
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American
90
240
NA45
NA45
Limited Stock
From
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Federal Pacific
45
120
NB100H
NB100H
Limited Stock
From
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American
100
240
NB110H
NB110H
Limited Stock
From
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American
110
240
NB111025H
NB111025H
Limited Stock
From
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Federal Pacific
25
120
NB111035H
NB111035H
Limited Stock
From
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Federal Pacific
35
120
NB111040H
NB111040H
Limited Stock
From
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American
40
120
NB111045H
NB111045H
Limited Stock
From
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Federal Pacific
45
120
NB111050H
NB111050H
Limited Stock
From
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American
50
120
NB111060H
NB111060H
Limited Stock
From
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American
60
120
NB120H
NB120H
Limited Stock
From
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American
20
120
NB130H
NB130H
Limited Stock
From
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Federal Pacific
30
120
NB135
NB135
Limited Stock
From
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Federal Pacific
35
120
NB135H
NB135H
Limited Stock
From
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American
35
120
NB140H
NB140H
Limited Stock
From
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Federal Pacific
40
120
NB145
NB145
Limited Stock
From
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Federal Pacific
45
120
NB145H
NB145H
Limited Stock
From
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American
45
120
NB150H
NB150H
Limited Stock
From
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Federal Pacific
50
120
NB160H
NB160H
Limited Stock
From
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American
60
120
NB1P15H
NB1P15H
Limited Stock
From
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American
15
120
NB1P20
NB1P20
Limited Stock
From
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Federal Pacific
20
120
NB1P20H
NB1P20H
Limited Stock
From
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American
20
120
NB1P30H
NB1P30H
Limited Stock
From
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Federal Pacific
30
120
NB1P35
NB1P35
Limited Stock
From
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American
35
120
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.