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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
NB232025H
NB232025H
Limited Stock
From
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American
25
240
NB232030H
NB232030H
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American
30
240
NB232035
NB232035
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Federal Pacific
35
240
NB232035H
NB232035H
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From
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American
35
240
NB232040H
NB232040H
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Federal Pacific
40
240
NB232045
NB232045
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American
45
240
NB232050H
NB232050H
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Federal Pacific
50
240
NB232060H
NB232060H
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From
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American
60
240
NB232070H
NB232070H
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American
70
240
NB232080
NB232080
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Federal Pacific
80
240
NB232080H
NB232080H
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Federal Pacific
80
240
NB232090H
NB232090H
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Federal Pacific
90
240
NB232100H
NB232100H
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Federal Pacific
100
240
NB2P20
NB2P20
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Federal Pacific
20
240
NB315H
NB315H
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American
15
240
NB320H
NB320H
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Federal Pacific
20
240
NB325
NB325
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American
25
240
NB325H
NB325H
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American
25
240
NB330H
NB330H
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Federal Pacific
30
240
NB335
NB335
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American
35
240
NB335H
NB335H
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American
35
240
NB340H
NB340H
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From
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Federal Pacific
40
240
NB345
NB345
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American
45
240
NB345H
NB345H
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From
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Federal Pacific
45
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.