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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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Manufacturer
Amperage
WLH1D320DG
WLH1D320DG
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Siemens
2000
WLH1D320DH
WLH1D320DH
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Siemens
2000
WLH1D320DJ
WLH1D320DJ
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Siemens
2000
WLH1D320DK
WLH1D320DK
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Siemens
2000
WLH1D320DL
WLH1D320DL
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Siemens
2000
WLH1D320DN
WLH1D320DN
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Siemens
2000
WLH1D320DP
WLH1D320DP
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Siemens
2000
WLH1D320DQ
WLH1D320DQ
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Siemens
2000
WLH1D320DR
WLH1D320DR
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Siemens
2000
WLH1D320DT
WLH1D320DT
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Siemens
2000
WLH1D320DU
WLH1D320DU
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Siemens
2000
WLH1D320DV
WLH1D320DV
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Siemens
2000
WLH1D320DW
WLH1D320DW
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Siemens
2000
WLH1D320DY
WLH1D320DY
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Siemens
2000
WLH1D320E
WLH1D320E
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Siemens
2000
WLH1D320EA
WLH1D320EA
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Siemens
2000
WLH1D320EB
WLH1D320EB
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Siemens
2000
WLH1D320ED
WLH1D320ED
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Siemens
2000
WLH1D320EE
WLH1D320EE
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Siemens
2000
WLH1D320EF
WLH1D320EF
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Siemens
2000
WLH1D320EG
WLH1D320EG
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Siemens
2000
WLH1D320EH
WLH1D320EH
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Siemens
2000
WLH1D320EJ
WLH1D320EJ
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Siemens
2000
WLH1D320EK
WLH1D320EK
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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.