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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
WLS2D320J
WLS2D320J
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Siemens
2000
WLS2D320JA
WLS2D320JA
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Siemens
2000
WLS2D320JB
WLS2D320JB
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Siemens
2000
WLS2D320JC
WLS2D320JC
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Siemens
2000
WLS2D320JD
WLS2D320JD
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Siemens
2000
WLS2D320JE
WLS2D320JE
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Siemens
2000
WLS2D320JF
WLS2D320JF
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2000
WLS2D320JG
WLS2D320JG
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2000
WLS2D320JH
WLS2D320JH
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Siemens
2000
WLS2D320JJ
WLS2D320JJ
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Siemens
2000
WLS2D320JK
WLS2D320JK
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Siemens
2000
WLS2D320JL
WLS2D320JL
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Siemens
2000
WLS2D320JN
WLS2D320JN
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Siemens
2000
WLS2D320JP
WLS2D320JP
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Siemens
2000
WLS2D320JQ
WLS2D320JQ
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Siemens
2000
WLS2D320JR
WLS2D320JR
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Siemens
2000
WLS2D320JT
WLS2D320JT
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Siemens
2000
WLS2D320JU
WLS2D320JU
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Siemens
2000
WLS2D320JW
WLS2D320JW
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Siemens
2000
WLS2D320JY
WLS2D320JY
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Siemens
2000
WLS2D320K
WLS2D320K
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Siemens
2000
WLS2D320KA
WLS2D320KA
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Siemens
2000
WLS2D320KB
WLS2D320KB
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Siemens
2000
WLS2D320KC
WLS2D320KC
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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.