1. Home / 
  2. All Categories / 
  3. Circuit Breaker / 
  4. Insulated Case Circuit Breaker

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.
SORT BY
Part Number
PRICE
Manufacturer
Amperage
SHB6G939W
SHB6G939W
Limited Stock
From
Get Price
General Electric
4000
SHB6G9511
SHB6G9511
Limited Stock
From
Get Price
General Electric
4000
SHB6G9512
SHB6G9512
Limited Stock
From
Get Price
General Electric
4000
SHB6G951U
SHB6G951U
Limited Stock
From
Get Price
General Electric
4000
SHB6G951W
SHB6G951W
Limited Stock
From
Get Price
General Electric
4000
SHB6G9521
SHB6G9521
Limited Stock
From
Get Price
General Electric
4000
SHB6G9522
SHB6G9522
Limited Stock
From
Get Price
General Electric
4000
SHB6G952U
SHB6G952U
Limited Stock
From
Get Price
General Electric
4000
SHB6G952W
SHB6G952W
Limited Stock
From
Get Price
General Electric
4000
SHB6G9531
SHB6G9531
Limited Stock
From
Get Price
General Electric
4000
SHB6G9532
SHB6G9532
Limited Stock
From
Get Price
General Electric
4000
SHB6G953U
SHB6G953U
Limited Stock
From
Get Price
General Electric
4000
SHB6G953W
SHB6G953W
Limited Stock
From
Get Price
General Electric
4000
SHB6G9541
SHB6G9541
Limited Stock
From
Get Price
General Electric
4000
SHB6G9542
SHB6G9542
Limited Stock
From
Get Price
General Electric
4000
SHB6G954U
SHB6G954U
Limited Stock
From
Get Price
General Electric
4000
SHB6G954W
SHB6G954W
Limited Stock
From
Get Price
General Electric
4000
SHB6G9561
SHB6G9561
Limited Stock
From
Get Price
General Electric
4000
SHB6G9562
SHB6G9562
Limited Stock
From
Get Price
General Electric
4000
SHB6G956U
SHB6G956U
Limited Stock
From
Get Price
General Electric
4000
SHB6G956W
SHB6G956W
Limited Stock
From
Get Price
General Electric
4000
SHB6G9571
SHB6G9571
Limited Stock
From
Get Price
General Electric
4000
SHB6G9572
SHB6G9572
Limited Stock
From
Get Price
General Electric
4000
SHB6G957U
SHB6G957U
Limited Stock
From
Get Price
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.