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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
WLS2F320HF
WLS2F320HF
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2000
WLS2F320HG
WLS2F320HG
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2000
WLS2F320HH
WLS2F320HH
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2000
WLS2F320HJ
WLS2F320HJ
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2000
WLS2F320HK
WLS2F320HK
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2000
WLS2F320HL
WLS2F320HL
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2000
WLS2F320HN
WLS2F320HN
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2000
WLS2F320HP
WLS2F320HP
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2000
WLS2F320HQ
WLS2F320HQ
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2000
WLS2F320HR
WLS2F320HR
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2000
WLS2F320HT
WLS2F320HT
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2000
WLS2F320HU
WLS2F320HU
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2000
WLS2F320HW
WLS2F320HW
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Siemens
2000
WLS2F320HY
WLS2F320HY
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2000
WLS2F320J
WLS2F320J
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2000
WLS2F320JA
WLS2F320JA
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Siemens
2000
WLS2F320JB
WLS2F320JB
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Siemens
2000
WLS2F320JC
WLS2F320JC
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Siemens
2000
WLS2F320JD
WLS2F320JD
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Siemens
2000
WLS2F320JE
WLS2F320JE
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Siemens
2000
WLS2F320JF
WLS2F320JF
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Siemens
2000
WLS2F320JG
WLS2F320JG
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Siemens
2000
WLS2F320JH
WLS2F320JH
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Siemens
2000
WLS2F320JJ
WLS2F320JJ
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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.