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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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Manufacturer
Amperage
SSF6G9331
SSF6G9331
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General Electric
4000
SSF6G9332
SSF6G9332
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General Electric
4000
SSF6G933U
SSF6G933U
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General Electric
4000
SSF6G933W
SSF6G933W
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General Electric
4000
SSF6G9341
SSF6G9341
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General Electric
4000
SSF6G9342
SSF6G9342
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General Electric
4000
SSF6G934U
SSF6G934U
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General Electric
4000
SSF6G934W
SSF6G934W
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General Electric
4000
SSF6G9361
SSF6G9361
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General Electric
4000
SSF6G9362
SSF6G9362
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General Electric
4000
SSF6G936U
SSF6G936U
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General Electric
4000
SSF6G936W
SSF6G936W
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General Electric
4000
SSF6G9371
SSF6G9371
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General Electric
4000
SSF6G9372
SSF6G9372
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General Electric
4000
SSF6G937U
SSF6G937U
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General Electric
4000
SSF6G937W
SSF6G937W
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General Electric
4000
SSF6G9381
SSF6G9381
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General Electric
4000
SSF6G9382
SSF6G9382
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General Electric
4000
SSF6G938U
SSF6G938U
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General Electric
4000
SSF6G938W
SSF6G938W
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General Electric
4000
SSF6G9391
SSF6G9391
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General Electric
4000
SSF6G9392
SSF6G9392
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General Electric
4000
SSF6G939U
SSF6G939U
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General Electric
4000
SSF6G939W
SSF6G939W
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General Electric
4000

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.