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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
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
WLS2D320UK
WLS2D320UK
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Siemens
2000
WLS2D320UL
WLS2D320UL
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Siemens
2000
WLS2D320UN
WLS2D320UN
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Siemens
2000
WLS2D320UP
WLS2D320UP
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Siemens
2000
WLS2D320UQ
WLS2D320UQ
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Siemens
2000
WLS2D320UR
WLS2D320UR
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Siemens
2000
WLS2D320UT
WLS2D320UT
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Siemens
2000
WLS2D320UU
WLS2D320UU
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Siemens
2000
WLS2D320UW
WLS2D320UW
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Siemens
2000
WLS2D320UY
WLS2D320UY
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Siemens
2000
WLS2F308A
WLS2F308A
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Siemens
800
WLS2F308AA
WLS2F308AA
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Siemens
800
WLS2F308AB
WLS2F308AB
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Siemens
800
WLS2F308AC
WLS2F308AC
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Siemens
800
WLS2F308AD
WLS2F308AD
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Siemens
800
WLS2F308AE
WLS2F308AE
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Siemens
800
WLS2F308AF
WLS2F308AF
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Siemens
800

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.