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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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Amperage
WLS2D320LH
WLS2D320LH
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2000
WLS2D320LJ
WLS2D320LJ
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2000
WLS2D320LK
WLS2D320LK
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2000
WLS2D320LL
WLS2D320LL
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2000
WLS2D320LN
WLS2D320LN
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2000
WLS2D320LP
WLS2D320LP
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2000
WLS2D320LQ
WLS2D320LQ
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2000
WLS2D320LR
WLS2D320LR
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2000
WLS2D320LT
WLS2D320LT
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2000
WLS2D320LU
WLS2D320LU
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Siemens
2000
WLS2D320LW
WLS2D320LW
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2000
WLS2D320LY
WLS2D320LY
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Siemens
2000
WLS2D320M
WLS2D320M
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Siemens
2000
WLS2D320MA
WLS2D320MA
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Siemens
2000
WLS2D320MB
WLS2D320MB
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Siemens
2000
WLS2D320MC
WLS2D320MC
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Siemens
2000
WLS2D320MD
WLS2D320MD
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Siemens
2000
WLS2D320ME
WLS2D320ME
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Siemens
2000
WLS2D320MF
WLS2D320MF
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Siemens
2000
WLS2D320MG
WLS2D320MG
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Siemens
2000
WLS2D320MH
WLS2D320MH
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Siemens
2000
WLS2D320MJ
WLS2D320MJ
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Siemens
2000
WLS2D320MK
WLS2D320MK
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Siemens
2000
WLS2D320ML
WLS2D320ML
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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.