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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
NB350H
NB350H
Limited Stock
From
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Federal Pacific
50
240
NB360H
NB360H
Limited Stock
From
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American
60
240
NB370H
NB370H
Limited Stock
From
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Federal Pacific
70
240
NB380
NB380
Limited Stock
From
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Federal Pacific
80
240
NB380H
NB380H
Limited Stock
From
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Federal Pacific
80
240
NB390H
NB390H
Limited Stock
From
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Federal Pacific
90
240
NB3P100H
NB3P100H
Limited Stock
From
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Federal Pacific
100
240
NB3P15H
NB3P15H
Limited Stock
From
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American
15
240
NB3P20H
NB3P20H
Limited Stock
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Federal Pacific
20
240
NB3P25H
NB3P25H
Limited Stock
From
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Federal Pacific
25
240
NB3P30H
NB3P30H
Limited Stock
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American
30
240
NB3P35
NB3P35
Limited Stock
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American
35
240
NB3P35H
NB3P35H
Limited Stock
From
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Federal Pacific
35
240
NB3P40H
NB3P40H
Limited Stock
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American
40
240
NB3P45
NB3P45
Limited Stock
From
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Federal Pacific
45
240
NB3P45H
NB3P45H
Limited Stock
From
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Federal Pacific
45
240
NB3P50H
NB3P50H
Limited Stock
From
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American
50
240
NB3P60H
NB3P60H
Limited Stock
From
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Federal Pacific
60
240
NB3P70H
NB3P70H
Limited Stock
From
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American
70
240
NB3P80
NB3P80
Limited Stock
From
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American
80
240
NB3P80H
NB3P80H
Limited Stock
From
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Federal Pacific
80
240
NB3P90H
NB3P90H
Limited Stock
From
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American
90
240
NEF431070AB
NEF431070AB
Limited Stock
From
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Federal Pacific
70
480
NEF431080AB
NEF431080AB
Limited Stock
From
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Federal Pacific
80
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.