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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
WLS1D320DY
WLS1D320DY
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Siemens
2000
WLS1D320E
WLS1D320E
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2000
WLS1D320EA
WLS1D320EA
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2000
WLS1D320EB
WLS1D320EB
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2000
WLS1D320EC
WLS1D320EC
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Siemens
2000
WLS1D320ED
WLS1D320ED
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Siemens
2000
WLS1D320EE
WLS1D320EE
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Siemens
2000
WLS1D320EF
WLS1D320EF
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2000
WLS1D320EG
WLS1D320EG
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Siemens
2000
WLS1D320EH
WLS1D320EH
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Siemens
2000
WLS1D320EJ
WLS1D320EJ
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Siemens
2000
WLS1D320EK
WLS1D320EK
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Siemens
2000
WLS1D320EL
WLS1D320EL
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Siemens
2000
WLS1D320EN
WLS1D320EN
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Siemens
2000
WLS1D320EP
WLS1D320EP
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Siemens
2000
WLS1D320EQ
WLS1D320EQ
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Siemens
2000
WLS1D320ER
WLS1D320ER
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Siemens
2000
WLS1D320ET
WLS1D320ET
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Siemens
2000
WLS1D320EU
WLS1D320EU
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Siemens
2000
WLS1D320EW
WLS1D320EW
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Siemens
2000
WLS1D320EY
WLS1D320EY
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Siemens
2000
WLS1D320F
WLS1D320F
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Siemens
2000
WLS1D320FA
WLS1D320FA
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Siemens
2000
WLS1D320FB
WLS1D320FB
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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.