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
WLS2F320LW
WLS2F320LW
Limited Stock
From
Get Price
Siemens
2000
WLS2F320LY
WLS2F320LY
Limited Stock
From
Get Price
Siemens
2000
WLS2F320M
WLS2F320M
Limited Stock
From
Get Price
Siemens
2000
WLS2F320MA
WLS2F320MA
Limited Stock
From
Get Price
Siemens
2000
WLS2F320MB
WLS2F320MB
Limited Stock
From
Get Price
Siemens
2000
WLS2F320MC
WLS2F320MC
Limited Stock
From
Get Price
Siemens
2000
WLS2F320MD
WLS2F320MD
Limited Stock
From
Get Price
Siemens
2000
WLS2F320ME
WLS2F320ME
Limited Stock
From
Get Price
Siemens
2000
WLS2F320MF
WLS2F320MF
Limited Stock
From
Get Price
Siemens
2000
WLS2F320MG
WLS2F320MG
Limited Stock
From
Get Price
Siemens
2000
WLS2F320MH
WLS2F320MH
Limited Stock
From
Get Price
Siemens
2000
WLS2F320MJ
WLS2F320MJ
Limited Stock
From
Get Price
Siemens
2000
WLS2F320MK
WLS2F320MK
Limited Stock
From
Get Price
Siemens
2000
WLS2F320ML
WLS2F320ML
Limited Stock
From
Get Price
Siemens
2000
WLS2F320MN
WLS2F320MN
Limited Stock
From
Get Price
Siemens
2000
WLS2F320MP
WLS2F320MP
Limited Stock
From
Get Price
Siemens
2000
WLS2F320MQ
WLS2F320MQ
Limited Stock
From
Get Price
Siemens
2000
WLS2F320MR
WLS2F320MR
Limited Stock
From
Get Price
Siemens
2000
WLS2F320MT
WLS2F320MT
Limited Stock
From
Get Price
Siemens
2000
WLS2F320MU
WLS2F320MU
Limited Stock
From
Get Price
Siemens
2000
WLS2F320MW
WLS2F320MW
Limited Stock
From
Get Price
Siemens
2000
WLS2F320MY
WLS2F320MY
Limited Stock
From
Get Price
Siemens
2000
WLS2F320N
WLS2F320N
Limited Stock
From
Get Price
Siemens
2000
WLS2F320NA
WLS2F320NA
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.