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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
LXD63M300
LXD63M300
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Siemens
300
3
LXD63M300H
LXD63M300H
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Siemens
300
3
LXD63M300L
LXD63M300L
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Siemens
300
3
LXD63M300LH
LXD63M300LH
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Siemens
300
3
LXD63M350
LXD63M350
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Siemens
350
3
LXD63M350H
LXD63M350H
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Siemens
350
3
LXD63M350L
LXD63M350L
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Siemens
350
3
LXD63M350LH
LXD63M350LH
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Siemens
350
3
LXD63M400
LXD63M400
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Siemens
400
3
LXD63M400H
LXD63M400H
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Siemens
400
3
LXD63M400L
LXD63M400L
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Siemens
400
3
LXD63M400LH
LXD63M400LH
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Siemens
400
3
LXD63M450
LXD63M450
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Siemens
450
3
LXD63M450H
LXD63M450H
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Siemens
450
3
LXD63M450L
LXD63M450L
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Siemens
450
3
LXD63M450LH
LXD63M450LH
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Siemens
450
3
LXD63M500
LXD63M500
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Siemens
500
3
LXD63M500H
LXD63M500H
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Siemens
500
3
LXD63M500L
LXD63M500L
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Siemens
500
3
LXD63M500LH
LXD63M500LH
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Siemens
500
3
LXD63M600H
LXD63M600H
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Siemens
600
3
LXD63M600LH
LXD63M600LH
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Siemens
600
3
NGB3K020B
NGB3K020B
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Siemens
20
3
NGB3K050B
NGB3K050B
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Siemens
50
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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