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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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Amperage
SHD5G8Z92
SHD5G8Z92
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General Electric
3000
SHD5G8Z9R
SHD5G8Z9R
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General Electric
3000
SHD5G8Z9U
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General Electric
3000
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General Electric
3000
SHD6G9111
SHD6G9111
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General Electric
4000
SHD6G9112
SHD6G9112
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General Electric
4000
SHD6G911U
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4000
SHD6G911W
SHD6G911W
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4000
SHD6G9121
SHD6G9121
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General Electric
4000
SHD6G9122
SHD6G9122
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General Electric
4000
SHD6G912U
SHD6G912U
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General Electric
4000
SHD6G912W
SHD6G912W
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General Electric
4000
SHD6G9131
SHD6G9131
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General Electric
4000
SHD6G9132
SHD6G9132
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General Electric
4000
SHD6G913U
SHD6G913U
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General Electric
4000
SHD6G913W
SHD6G913W
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General Electric
4000
SHD6G9141
SHD6G9141
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General Electric
4000
SHD6G9142
SHD6G9142
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General Electric
4000
SHD6G914U
SHD6G914U
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General Electric
4000
SHD6G914W
SHD6G914W
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General Electric
4000
SHD6G9161
SHD6G9161
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General Electric
4000
SHD6G9162
SHD6G9162
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General Electric
4000
SHD6G916U
SHD6G916U
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General Electric
4000
SHD6G916W
SHD6G916W
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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.