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
WLS2D320FN
WLS2D320FN
Limited Stock
From
Get Price
Siemens
2000
WLS2D320FP
WLS2D320FP
Limited Stock
From
Get Price
Siemens
2000
WLS2D320FQ
WLS2D320FQ
Limited Stock
From
Get Price
Siemens
2000
WLS2D320FR
WLS2D320FR
Limited Stock
From
Get Price
Siemens
2000
WLS2D320FT
WLS2D320FT
Limited Stock
From
Get Price
Siemens
2000
WLS2D320FU
WLS2D320FU
Limited Stock
From
Get Price
Siemens
2000
WLS2D320FW
WLS2D320FW
Limited Stock
From
Get Price
Siemens
2000
WLS2D320FY
WLS2D320FY
Limited Stock
From
Get Price
Siemens
2000
WLS2D320G
WLS2D320G
Limited Stock
From
Get Price
Siemens
2000
WLS2D320GA
WLS2D320GA
Limited Stock
From
Get Price
Siemens
2000
WLS2D320GB
WLS2D320GB
Limited Stock
From
Get Price
Siemens
2000
WLS2D320GC
WLS2D320GC
Limited Stock
From
Get Price
Siemens
2000
WLS2D320GD
WLS2D320GD
Limited Stock
From
Get Price
Siemens
2000
WLS2D320GE
WLS2D320GE
Limited Stock
From
Get Price
Siemens
2000
WLS2D320GF
WLS2D320GF
Limited Stock
From
Get Price
Siemens
2000
WLS2D320GG
WLS2D320GG
Limited Stock
From
Get Price
Siemens
2000
WLS2D320GH
WLS2D320GH
Limited Stock
From
Get Price
Siemens
2000
WLS2D320GJ
WLS2D320GJ
Limited Stock
From
Get Price
Siemens
2000
WLS2D320GK
WLS2D320GK
Limited Stock
From
Get Price
Siemens
2000
WLS2D320GL
WLS2D320GL
Limited Stock
From
Get Price
Siemens
2000
WLS2D320GN
WLS2D320GN
Limited Stock
From
Get Price
Siemens
2000
WLS2D320GP
WLS2D320GP
Limited Stock
From
Get Price
Siemens
2000
WLS2D320GQ
WLS2D320GQ
Limited Stock
From
Get Price
Siemens
2000
WLS2D320GR
WLS2D320GR
Limited Stock
From
Get Price
Siemens
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.