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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
SSD4G634M
SSD4G634M
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General Electric
2000
SSD4G634N
SSD4G634N
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General Electric
2000
SSD4G634P
SSD4G634P
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General Electric
2000
SSD4G634R
SSD4G634R
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General Electric
2000
SSD4G634T
SSD4G634T
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General Electric
2000
SSD4G634U
SSD4G634U
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General Electric
2000
SSD4G634W
SSD4G634W
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General Electric
2000
SSD4G636M
SSD4G636M
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General Electric
2000
SSD4G636N
SSD4G636N
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General Electric
2000
SSD4G636P
SSD4G636P
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General Electric
2000
SSD4G636R
SSD4G636R
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General Electric
2000
SSD4G636T
SSD4G636T
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General Electric
2000
SSD4G636U
SSD4G636U
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General Electric
2000
SSD4G636W
SSD4G636W
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General Electric
2000
SSD4G637M
SSD4G637M
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General Electric
2000
SSD4G637N
SSD4G637N
Limited Stock
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General Electric
2000
SSD4G637P
SSD4G637P
Limited Stock
From
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General Electric
2000
SSD4G637R
SSD4G637R
Limited Stock
From
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General Electric
2000
SSD4G637T
SSD4G637T
Limited Stock
From
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General Electric
2000
SSD4G637U
SSD4G637U
Limited Stock
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General Electric
2000
SSD4G637W
SSD4G637W
Limited Stock
From
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General Electric
2000
SSD4G638M
SSD4G638M
Limited Stock
From
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General Electric
2000
SSD4G638N
SSD4G638N
Limited Stock
From
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General Electric
2000
SSD4G638P
SSD4G638P
Limited Stock
From
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General Electric
2000

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.