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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
NJL631080R
NJL631080R
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From
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American
80
600
NJL631090R
NJL631090R
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From
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Federal Pacific
90
600
135
135
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From
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Federal Pacific
35
120
140
140
Limited Stock
From
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American
40
120
2B100BC
2B100BC
Limited Stock
From
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American
100
240
2B125BC
2B125BC
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From
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Federal Pacific
125
240
2B150BC
2B150BC
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American
150
240
2B175BC
2B175BC
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American
175
240
2B200BC
2B200BC
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Federal Pacific
200
240
2B225BC
2B225BC
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American
225
240
35
35
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Federal Pacific
35
120
NA2P50
NA2P50
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Federal Pacific
50
240
NA3100H
NA3100H
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American
100
240
NA315H
NA315H
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American
15
240
NA320H
NA320H
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American
20
240
NA325-FLAT-TOP
NA325-FLAT-TOP
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Federal Pacific
25
240
NA325H
NA325H
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Federal Pacific
25
240
NA330H
NA330H
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American
30
240
NA335H
NA335H
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American
35
240
NA340H
NA340H
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From
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American
40
240
NA345
NA345
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Federal Pacific
45
240
NA345H
NA345H
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Federal Pacific
45
240
NA350H
NA350H
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American
50
240
NA360H
NA360H
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Federal Pacific
60
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.