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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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Manufacturer
Amperage
SSB2G421N
SSB2G421N
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General Electric
1000
SSB2G421P
SSB2G421P
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General Electric
1000
SSB2G422H
SSB2G422H
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General Electric
1000
SSB2G422K
SSB2G422K
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General Electric
1000
SSB2G422N
SSB2G422N
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General Electric
1000
SSB2G422P
SSB2G422P
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General Electric
1000
SSB2G423H
SSB2G423H
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General Electric
1000
SSB2G423K
SSB2G423K
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General Electric
1000
SSB2G423N
SSB2G423N
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General Electric
1000
SSB2G423P
SSB2G423P
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General Electric
1000
SSB2G424H
SSB2G424H
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General Electric
1000
SSB2G424K
SSB2G424K
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General Electric
1000
SSB2G424N
SSB2G424N
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General Electric
1000
SSB2G424P
SSB2G424P
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General Electric
1000
SSB2G426H
SSB2G426H
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General Electric
1000
SSB2G426K
SSB2G426K
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General Electric
1000
SSB2G426N
SSB2G426N
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General Electric
1000
SSB2G426P
SSB2G426P
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General Electric
1000
SSB2G427H
SSB2G427H
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General Electric
1000
SSB2G427K
SSB2G427K
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General Electric
1000
SSB2G427N
SSB2G427N
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General Electric
1000
SSB2G427P
SSB2G427P
Limited Stock
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General Electric
1000
SSB2G428H
SSB2G428H
Limited Stock
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General Electric
1000
SSB2G428K
SSB2G428K
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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.