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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
SHD6G9891
SHD6G9891
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General Electric
4000
SHD6G9892
SHD6G9892
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General Electric
4000
SHD6G989U
SHD6G989U
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4000
SHD6G989W
SHD6G989W
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General Electric
4000
SHD6G9911
SHD6G9911
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General Electric
4000
SHD6G9912
SHD6G9912
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General Electric
4000
SHD6G991U
SHD6G991U
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4000
SHD6G991W
SHD6G991W
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General Electric
4000
SHD6G9921
SHD6G9921
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General Electric
4000
SHD6G9922
SHD6G9922
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General Electric
4000
SHD6G992U
SHD6G992U
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General Electric
4000
SHD6G992W
SHD6G992W
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General Electric
4000
SHD6G9931
SHD6G9931
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General Electric
4000
SHD6G9932
SHD6G9932
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General Electric
4000
SHD6G993U
SHD6G993U
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General Electric
4000
SHD6G993W
SHD6G993W
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General Electric
4000
SHD6G9941
SHD6G9941
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General Electric
4000
SHD6G9942
SHD6G9942
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General Electric
4000
SHD6G994U
SHD6G994U
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General Electric
4000
SHD6G994W
SHD6G994W
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General Electric
4000
SHD6G9961
SHD6G9961
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General Electric
4000
SHD6G9962
SHD6G9962
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General Electric
4000
SHD6G996U
SHD6G996U
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General Electric
4000
SHD6G996W
SHD6G996W
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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.