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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
WLS2D320RD
WLS2D320RD
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Siemens
2000
WLS2D320RE
WLS2D320RE
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Siemens
2000
WLS2D320RF
WLS2D320RF
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Siemens
2000
WLS2D320RG
WLS2D320RG
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Siemens
2000
WLS2D320RH
WLS2D320RH
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Siemens
2000
WLS2D320RJ
WLS2D320RJ
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Siemens
2000
WLS2D320RK
WLS2D320RK
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Siemens
2000
WLS2D320RL
WLS2D320RL
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Siemens
2000
WLS2D320RN
WLS2D320RN
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Siemens
2000
WLS2D320RP
WLS2D320RP
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Siemens
2000
WLS2D320RQ
WLS2D320RQ
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Siemens
2000
WLS2D320RR
WLS2D320RR
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Siemens
2000
WLS2D320RT
WLS2D320RT
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Siemens
2000
WLS2D320RU
WLS2D320RU
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Siemens
2000
WLS2D320RW
WLS2D320RW
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Siemens
2000
WLS2D320RY
WLS2D320RY
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Siemens
2000
WLS2D320T
WLS2D320T
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Siemens
2000
WLS2D320TA
WLS2D320TA
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Siemens
2000
WLS2D320TB
WLS2D320TB
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Siemens
2000
WLS2D320TC
WLS2D320TC
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Siemens
2000
WLS2D320TD
WLS2D320TD
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Siemens
2000
WLS2D320TE
WLS2D320TE
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Siemens
2000
WLS2D320TF
WLS2D320TF
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Siemens
2000
WLS2D320TG
WLS2D320TG
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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.