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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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Manufacturer
Amperage
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SEF36300ES9A8
SEF36300ES9A8
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Schneider Electric
300
3
SEF36300ES9B4
SEF36300ES9B4
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Schneider Electric
300
3
SEF36300ES9B8
SEF36300ES9B8
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Square D
300
3
SEF36300ES9C4
SEF36300ES9C4
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Square D
300
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SEF36300ES9C8
SEF36300ES9C8
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Square D
300
3
SEF36300ES9D4
SEF36300ES9D4
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Schneider Electric
300
3
SEF36300ES9D8
SEF36300ES9D8
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Square D
300
3
SEF36300ES9E4
SEF36300ES9E4
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Schneider Electric
300
3
SEF36300ES9E8
SEF36300ES9E8
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Schneider Electric
300
3
SEF36300ES9F4
SEF36300ES9F4
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Schneider Electric
300
3
SEF36300ES9F8
SEF36300ES9F8
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Square D
300
3
SEF36300ET1
SEF36300ET1
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Square D
300
3
SEF36300ET2
SEF36300ET2
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Schneider Electric
300
3
SEF36300ET3
SEF36300ET3
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Schneider Electric
300
3
SEF36300ET4
SEF36300ET4
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Square D
300
3
SEF36300ET5
SEF36300ET5
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Square D
300
3
SEF36300ET6
SEF36300ET6
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Square D
300
3
SEF36300ET7
SEF36300ET7
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Square D
300
3
SEF36300EV1
SEF36300EV1
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Schneider Electric
300
3
SEF36300F4
SEF36300F4
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Schneider Electric
300
3
SEF36300F8
SEF36300F8
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Square D
300
3
SEF36300LI
SEF36300LI
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Square D
300
3
SEF36300LIA4
SEF36300LIA4
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Square D
300
3
SEF36300LIA8
SEF36300LIA8
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Schneider Electric
300
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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