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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
WLS1F320DE
WLS1F320DE
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Siemens
2000
WLS1F320DF
WLS1F320DF
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2000
WLS1F320DG
WLS1F320DG
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2000
WLS1F320DH
WLS1F320DH
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2000
WLS1F320DJ
WLS1F320DJ
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2000
WLS1F320DK
WLS1F320DK
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Siemens
2000
WLS1F320DL
WLS1F320DL
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2000
WLS1F320DN
WLS1F320DN
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2000
WLS1F320DP
WLS1F320DP
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Siemens
2000
WLS1F320DQ
WLS1F320DQ
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Siemens
2000
WLS1F320DR
WLS1F320DR
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Siemens
2000
WLS1F320DT
WLS1F320DT
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2000
WLS1F320DU
WLS1F320DU
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Siemens
2000
WLS1F320DW
WLS1F320DW
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2000
WLS1F320DY
WLS1F320DY
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Siemens
2000
WLS1F320E
WLS1F320E
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Siemens
2000
WLS1F320EA
WLS1F320EA
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Siemens
2000
WLS1F320EB
WLS1F320EB
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Siemens
2000
WLS1F320EC
WLS1F320EC
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Siemens
2000
WLS1F320ED
WLS1F320ED
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Siemens
2000
WLS1F320EE
WLS1F320EE
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Siemens
2000
WLS1F320EF
WLS1F320EF
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Siemens
2000
WLS1F320EG
WLS1F320EG
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Siemens
2000
WLS1F320EH
WLS1F320EH
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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.