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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
WLS2D320TE
WLS2D320TE
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Siemens
2000
WLS2D320TF
WLS2D320TF
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2000
WLS2D320TG
WLS2D320TG
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2000
WLS2D320TH
WLS2D320TH
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2000
WLS2D320TJ
WLS2D320TJ
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2000
WLS2D320TK
WLS2D320TK
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Siemens
2000
WLS2D320TL
WLS2D320TL
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2000
WLS2D320TN
WLS2D320TN
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2000
WLS2D320TP
WLS2D320TP
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2000
WLS2D320TQ
WLS2D320TQ
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Siemens
2000
WLS2D320TR
WLS2D320TR
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Siemens
2000
WLS2D320TT
WLS2D320TT
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Siemens
2000
WLS2D320TU
WLS2D320TU
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Siemens
2000
WLS2D320TW
WLS2D320TW
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Siemens
2000
WLS2D320TY
WLS2D320TY
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Siemens
2000
WLS2D320U
WLS2D320U
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Siemens
2000
WLS2D320UA
WLS2D320UA
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Siemens
2000
WLS2D320UB
WLS2D320UB
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Siemens
2000
WLS2D320UC
WLS2D320UC
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Siemens
2000
WLS2D320UE
WLS2D320UE
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Siemens
2000
WLS2D320UF
WLS2D320UF
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Siemens
2000
WLS2D320UG
WLS2D320UG
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Siemens
2000
WLS2D320UH
WLS2D320UH
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Siemens
2000
WLS2D320UJ
WLS2D320UJ
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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.