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Circuit Breaker

For power distribution and electrical protection systems, circuit breakers are among the most critical components for safeguarding equipment, personnel, and facilities from electrical overloads and short circuits. Circuit breakers automatically interrupt electrical current flow when abnormal conditions are detected, protecting circuits from damage while allowing manual reset and continued operation. Electrical.com carries an extensive selection of 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
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Manufacturer
Amperage
Poles
NLG3X400B
NLG3X400B
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Siemens
400
3
NLG3X400L
NLG3X400L
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400
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NLG3X600
NLG3X600
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Siemens
600
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NLG3X600B
NLG3X600B
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Siemens
600
3
NLG3X600L
NLG3X600L
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Siemens
600
3
NLX2B400
NLX2B400
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Siemens
400
2
NLX2B400L
NLX2B400L
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Siemens
400
2
NLX2B500
NLX2B500
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Siemens
500
2
NLX2B500L
NLX2B500L
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Siemens
500
2
NLX2B600
NLX2B600
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Siemens
600
2
NLX2B600L
NLX2B600L
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Siemens
600
2
NLX2C400
NLX2C400
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Siemens
400
2
NLX2C400L
NLX2C400L
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Siemens
400
2
NLX2C500
NLX2C500
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Siemens
500
2
NLX2C500L
NLX2C500L
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Siemens
500
2
NLX2C600
NLX2C600
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Siemens
600
2
NLX2C600L
NLX2C600L
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Siemens
600
2
NLX3B400
NLX3B400
Limited Stock
From
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Siemens
400
3
NLX3B400L
NLX3B400L
Limited Stock
From
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Siemens
400
3
NLX3B500
NLX3B500
Limited Stock
From
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Siemens
500
3
NLX3B500L
NLX3B500L
Limited Stock
From
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Siemens
500
3
NLX3B600
NLX3B600
Limited Stock
From
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Siemens
600
3
NLX3B600L
NLX3B600L
Limited Stock
From
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Siemens
600
3
NLX3C400
NLX3C400
Limited Stock
From
Get Price
Siemens
400
3
Popular Circuit Breaker Manufacturers

Electrical.com stocks the largest inventory of circuit breakers in the world, with over 1 million square feet of new, used, surplus, and re-certified circuit protection equipment available for immediate shipment. From residential to industrial applications, across all voltage and amperage ratings, we have what you need when others say no. Our comprehensive circuit breaker inventory spans all voltage classes, amperage ratings, and pole configurations 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 circuit breakers serve critical applications across manufacturing facilities, commercial buildings, data centers, healthcare facilities, utilities and power generation, industrial plants, residential construction, telecommunications infrastructure, and process control installations.


Whether you're maintaining legacy equipment with obsolete circuit breaker models or sourcing current production components for new electrical systems, our 40+ warehouse locations across the US and Canada ensure rapid delivery to minimize your downtime and keep your operations running. Need 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.

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