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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
WLL2F320TN
WLL2F320TN
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2000
WLL2F320TP
WLL2F320TP
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2000
WLL2F320TQ
WLL2F320TQ
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2000
WLL2F320TR
WLL2F320TR
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2000
WLL2F320TT
WLL2F320TT
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2000
WLL2F320TU
WLL2F320TU
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2000
WLL2F320TW
WLL2F320TW
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2000
WLL2F320TY
WLL2F320TY
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WLL2F320U
WLL2F320U
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2000
WLL2F320UA
WLL2F320UA
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2000
WLL2F320UB
WLL2F320UB
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2000
WLL2F320UC
WLL2F320UC
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2000
WLL2F320UD
WLL2F320UD
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2000
WLL2F320UE
WLL2F320UE
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2000
WLL2F320UF
WLL2F320UF
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2000
WLL2F320UG
WLL2F320UG
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2000
WLL2F320UH
WLL2F320UH
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2000
WLL2F320UJ
WLL2F320UJ
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2000
WLL2F320UK
WLL2F320UK
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2000
WLL2F320UL
WLL2F320UL
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2000
WLL2F320UN
WLL2F320UN
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2000
WLL2F320UP
WLL2F320UP
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2000
WLL2F320UQ
WLL2F320UQ
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Siemens
2000
WLL2F320UR
WLL2F320UR
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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.