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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
SHB4G451H
SHB4G451H
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General Electric
1000
SHB4G451K
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General Electric
1000
SHB4G451N
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General Electric
1000
SHB4G451P
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General Electric
1000
SHB4G452H
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1000
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1000
SHB4G452N
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General Electric
1000
SHB4G452P
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General Electric
1000
SHB4G453H
SHB4G453H
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General Electric
1000
SHB4G453K
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General Electric
1000
SHB4G453N
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General Electric
1000
SHB4G453P
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General Electric
1000
SHB4G454H
SHB4G454H
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General Electric
1000
SHB4G454K
SHB4G454K
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General Electric
1000
SHB4G454N
SHB4G454N
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General Electric
1000
SHB4G454P
SHB4G454P
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General Electric
1000
SHB4G456H
SHB4G456H
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General Electric
1000
SHB4G456K
SHB4G456K
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General Electric
1000
SHB4G456N
SHB4G456N
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General Electric
1000
SHB4G456P
SHB4G456P
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General Electric
1000
SHB4G457H
SHB4G457H
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General Electric
1000
SHB4G457K
SHB4G457K
Limited Stock
From
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General Electric
1000
SHB4G457N
SHB4G457N
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From
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General Electric
1000
SHB4G457P
SHB4G457P
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General Electric
1000

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.