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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
NJL424200R
NJL424200R
Limited Stock
From
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American
200
480
NJL424225R
NJL424225R
Limited Stock
From
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American
225
480
NJL424250R
NJL424250R
Limited Stock
From
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Federal Pacific
250
480
NJL424300R
NJL424300R
Limited Stock
From
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American
300
480
NJL424350R
NJL424350R
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From
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Federal Pacific
350
480
NJL424400NAW
NJL424400NAW
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From
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American
400
480
NJL424400R
NJL424400R
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From
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Federal Pacific
400
480
NJL424500NAW
NJL424500NAW
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From
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Federal Pacific
500
480
NJL424500R
NJL424500R
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From
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Federal Pacific
500
480
NJL424600R
NJL424600R
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From
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Federal Pacific
600
480
NJL631080R
NJL631080R
Limited Stock
From
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American
80
600
NJL631090R
NJL631090R
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From
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Federal Pacific
90
600
140
140
Limited Stock
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American
40
120
2B100BC
2B100BC
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From
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American
100
240
2B125BC
2B125BC
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Federal Pacific
125
240
2B150BC
2B150BC
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From
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American
150
240
2B175BC
2B175BC
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From
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American
175
240
2B200BC
2B200BC
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From
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Federal Pacific
200
240
NA225
NA225
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From
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Federal Pacific
25
240
NA235
NA235
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From
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Federal Pacific
35
240
NA2P50
NA2P50
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From
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Federal Pacific
50
240
NA3100H
NA3100H
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From
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American
100
240
NA315H
NA315H
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From
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American
15
240
NA320H
NA320H
Limited Stock
From
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American
20
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.