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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
SSB5G8Z82
SSB5G8Z82
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General Electric
3000
SSB5G8Z8R
SSB5G8Z8R
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General Electric
3000
SSB5G8Z8U
SSB5G8Z8U
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General Electric
3000
SSB5G8Z8W
SSB5G8Z8W
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General Electric
3000
SSB5G8Z91
SSB5G8Z91
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General Electric
3000
SSB5G8Z92
SSB5G8Z92
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General Electric
3000
SSB5G8Z9R
SSB5G8Z9R
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General Electric
3000
SSB5G8Z9U
SSB5G8Z9U
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General Electric
3000
SSB5G8Z9W
SSB5G8Z9W
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General Electric
3000
SSB6G9111
SSB6G9111
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General Electric
4000
SSB6G9112
SSB6G9112
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General Electric
4000
SSB6G911U
SSB6G911U
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General Electric
4000
SSB6G911W
SSB6G911W
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General Electric
4000
SSB6G9121
SSB6G9121
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General Electric
4000
SSB6G9122
SSB6G9122
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General Electric
4000
SSB6G912U
SSB6G912U
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General Electric
4000
SSB6G912W
SSB6G912W
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General Electric
4000
SSB6G9131
SSB6G9131
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General Electric
4000
SSB6G9132
SSB6G9132
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General Electric
4000
SSB6G913U
SSB6G913U
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General Electric
4000
SSB6G913W
SSB6G913W
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General Electric
4000
SSB6G9141
SSB6G9141
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General Electric
4000
SSB6G9142
SSB6G9142
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General Electric
4000
SSB6G914U
SSB6G914U
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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.