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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
WLH1F320TJ
WLH1F320TJ
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Siemens
2000
WLH1F320TK
WLH1F320TK
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2000
WLH1F320TL
WLH1F320TL
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Siemens
2000
WLH1F320TN
WLH1F320TN
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2000
WLH1F320TP
WLH1F320TP
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2000
WLH1F320TQ
WLH1F320TQ
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Siemens
2000
WLH1F320TR
WLH1F320TR
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2000
WLH1F320TT
WLH1F320TT
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2000
WLH1F320TU
WLH1F320TU
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Siemens
2000
WLH1F320TV
WLH1F320TV
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Siemens
2000
WLH1F320TW
WLH1F320TW
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Siemens
2000
WLH1F320TY
WLH1F320TY
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Siemens
2000
WLH1F320UA
WLH1F320UA
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Siemens
2000
WLH1F320UB
WLH1F320UB
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Siemens
2000
WLH1F320UD
WLH1F320UD
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Siemens
2000
WLH1F320UE
WLH1F320UE
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Siemens
2000
WLH1F320UF
WLH1F320UF
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Siemens
2000
WLH1F320UG
WLH1F320UG
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Siemens
2000
WLH1F320UH
WLH1F320UH
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Siemens
2000
WLH1F320UJ
WLH1F320UJ
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Siemens
2000
WLH1F320UK
WLH1F320UK
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Siemens
2000
WLH1F320UL
WLH1F320UL
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Siemens
2000
WLH1F320UN
WLH1F320UN
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Siemens
2000
WLH1F320UP
WLH1F320UP
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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.