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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
WLH1D320TL
WLH1D320TL
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Siemens
2000
WLH1D320TN
WLH1D320TN
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2000
WLH1D320TP
WLH1D320TP
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2000
WLH1D320TQ
WLH1D320TQ
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2000
WLH1D320TR
WLH1D320TR
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2000
WLH1D320TT
WLH1D320TT
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Siemens
2000
WLH1D320TU
WLH1D320TU
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Siemens
2000
WLH1D320TV
WLH1D320TV
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2000
WLH1D320TW
WLH1D320TW
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2000
WLH1D320TY
WLH1D320TY
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Siemens
2000
WLH1D320UG
WLH1D320UG
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Siemens
2000
WLH1D320UH
WLH1D320UH
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Siemens
2000
WLH1D320UJ
WLH1D320UJ
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Siemens
2000
WLH1D320UK
WLH1D320UK
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Siemens
2000
WLH1D320UL
WLH1D320UL
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Siemens
2000
WLH1D320UN
WLH1D320UN
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Siemens
2000
WLH1D320UP
WLH1D320UP
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Siemens
2000
WLH1D320UQ
WLH1D320UQ
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Siemens
2000
WLH1D320UR
WLH1D320UR
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Siemens
2000
WLH1D320UT
WLH1D320UT
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Siemens
2000
WLH1D320UU
WLH1D320UU
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Siemens
2000
WLH1D320UV
WLH1D320UV
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Siemens
2000
WLH1D320UW
WLH1D320UW
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Siemens
2000
WLH1D320UY
WLH1D320UY
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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.