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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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SHD6G9B1U
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General Electric
4000
SHD6G9B1W
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4000
SHD6G9B21
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General Electric
4000
SHD6G9B22
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General Electric
4000
SHD6G9B2U
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General Electric
4000
SHD6G9B2W
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General Electric
4000
SHD6G9B31
SHD6G9B31
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General Electric
4000
SHD6G9B32
SHD6G9B32
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General Electric
4000
SHD6G9B3U
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General Electric
4000
SHD6G9B3W
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General Electric
4000
SHD6G9B41
SHD6G9B41
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General Electric
4000
SHD6G9B42
SHD6G9B42
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General Electric
4000
SHD6G9B4U
SHD6G9B4U
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General Electric
4000
SHD6G9B4W
SHD6G9B4W
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General Electric
4000
SHD6G9B61
SHD6G9B61
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General Electric
4000
SHD6G9B62
SHD6G9B62
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General Electric
4000
SHD6G9B6U
SHD6G9B6U
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General Electric
4000
SHD6G9B6W
SHD6G9B6W
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General Electric
4000
SHD6G9B71
SHD6G9B71
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General Electric
4000
SHD6G9B72
SHD6G9B72
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General Electric
4000
SHD6G9B7U
SHD6G9B7U
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General Electric
4000
SHD6G9B7W
SHD6G9B7W
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General Electric
4000
SHD6G9B81
SHD6G9B81
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General Electric
4000
SHD6G9B82
SHD6G9B82
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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.