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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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Part Number
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Manufacturer
Amperage
SHF1G337N
SHF1G337N
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General Electric
800
SHF1G338F
SHF1G338F
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General Electric
800
SHF1G338H
SHF1G338H
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General Electric
800
SHF1G338I
SHF1G338I
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General Electric
800
SHF1G338J
SHF1G338J
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General Electric
800
SHF1G338K
SHF1G338K
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General Electric
800
SHF1G338L
SHF1G338L
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General Electric
800
SHF1G338N
SHF1G338N
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General Electric
800
SHF1G339F
SHF1G339F
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General Electric
800
SHF1G339H
SHF1G339H
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General Electric
800
SHF1G339I
SHF1G339I
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General Electric
800
SHF1G339J
SHF1G339J
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General Electric
800
SHF1G339K
SHF1G339K
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General Electric
800
SHF1G339L
SHF1G339L
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General Electric
800
SHF1G339N
SHF1G339N
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General Electric
800
SHF1G351F
SHF1G351F
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General Electric
800
SHF1G351H
SHF1G351H
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General Electric
800
SHF1G351I
SHF1G351I
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General Electric
800
SHF1G351J
SHF1G351J
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General Electric
800
SHF1G351K
SHF1G351K
Limited Stock
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General Electric
800
SHF1G351L
SHF1G351L
Limited Stock
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General Electric
800
SHF1G351N
SHF1G351N
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General Electric
800
SHF1G352F
SHF1G352F
Limited Stock
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General Electric
800
SHF1G352H
SHF1G352H
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General Electric
800

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.