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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
WLL2D320EG
WLL2D320EG
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2000
WLL2D320EH
WLL2D320EH
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2000
WLL2D320EJ
WLL2D320EJ
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2000
WLL2D320EK
WLL2D320EK
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2000
WLL2D320EL
WLL2D320EL
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2000
WLL2D320EN
WLL2D320EN
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2000
WLL2D320EP
WLL2D320EP
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2000
WLL2D320EQ
WLL2D320EQ
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2000
WLL2D320ER
WLL2D320ER
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2000
WLL2D320ET
WLL2D320ET
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2000
WLL2D320EU
WLL2D320EU
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Siemens
2000
WLL2D320EW
WLL2D320EW
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2000
WLL2D320EY
WLL2D320EY
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Siemens
2000
WLL2D320F
WLL2D320F
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Siemens
2000
WLL2D320FA
WLL2D320FA
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2000
WLL2D320FB
WLL2D320FB
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Siemens
2000
WLL2D320FC
WLL2D320FC
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Siemens
2000
WLL2D320FD
WLL2D320FD
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Siemens
2000
WLL2D320FE
WLL2D320FE
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Siemens
2000
WLL2D320FF
WLL2D320FF
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Siemens
2000
WLL2D320FG
WLL2D320FG
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Siemens
2000
WLL2D320FH
WLL2D320FH
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Siemens
2000
WLL2D320FJ
WLL2D320FJ
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Siemens
2000
WLL2D320FK
WLL2D320FK
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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.