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Insulated Case Circuit Breaker

For circuit breaker applications in commercial and industrial power distribution systems, insulated case circuit breakers are among the most critical components for reliable overcurrent protection and system safety. Insulated case circuit breakers provide adjustable trip settings and high interrupting capacity while offering compact installation in panelboards and switchboards. Electrical.com carries an extensive selection of insulated 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, industrial facilities, data centers, and healthcare infrastructure applications.
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Part Number
PRICE
Manufacturer
Amperage
SED36250LST1
SED36250LST1
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Schneider Electric
250
SED36250LST2
SED36250LST2
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Schneider Electric
250
SED36250LST3
SED36250LST3
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Schneider Electric
250
SED36250LST4
SED36250LST4
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Square D
250
SED36250LSV1
SED36250LSV1
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Schneider Electric
250
SED36250MR
SED36250MR
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Schneider Electric
250
SED36250S1
SED36250S1
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Square D
250
SED36250S2
SED36250S2
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Square D
250
SED36250S3
SED36250S3
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Schneider Electric
250
SED36250S4
SED36250S4
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Schneider Electric
250
SED36250T1
SED36250T1
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Schneider Electric
250
SED36250T2
SED36250T2
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Square D
250
SED36250T3
SED36250T3
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Schneider Electric
250
SED36250T4
SED36250T4
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Schneider Electric
250
SED36250V1
SED36250V1
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Schneider Electric
250
SED36300
SED36300
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Schneider Electric
300
SED363000
SED363000
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Schneider Electric
3000
SED363000A4
SED363000A4
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Square D
3000
SED363000A8
SED363000A8
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Schneider Electric
3000
SED363000B4
SED363000B4
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Schneider Electric
3000
SED363000B8
SED363000B8
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Schneider Electric
3000
SED363000C4
SED363000C4
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Square D
3000
SED363000C8
SED363000C8
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Schneider Electric
3000
SED363000D4
SED363000D4
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Square D
3000

Electrical.com stocks the largest inventory of insulated case circuit breakers in the world, with over 1 million square feet of new, used, surplus, and re-certified circuit breakers available for immediate shipment. From low voltage to medium voltage applications, we have the insulated case breakers you need when others say no. Our comprehensive insulated case circuit breaker inventory spans all amperage ratings, voltage classes, and frame sizes 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 insulated case circuit breakers serve critical applications across industrial power distribution systems, manufacturing facilities, commercial buildings, data centers, utility substations, process control installations, and heavy industrial equipment.


Whether you're maintaining legacy electrical systems with obsolete insulated case breaker models or sourcing current production breakers for new installations and upgrades, our 40+ warehouse locations across the US and Canada ensure rapid delivery to minimize your downtime. Need insulated 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.