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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
WLH1D320KG
WLH1D320KG
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2000
WLH1D320KH
WLH1D320KH
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2000
WLH1D320KJ
WLH1D320KJ
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2000
WLH1D320KK
WLH1D320KK
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2000
WLH1D320KL
WLH1D320KL
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2000
WLH1D320KN
WLH1D320KN
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2000
WLH1D320KP
WLH1D320KP
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2000
WLH1D320KQ
WLH1D320KQ
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2000
WLH1D320KR
WLH1D320KR
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2000
WLH1D320KT
WLH1D320KT
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2000
WLH1D320KU
WLH1D320KU
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2000
WLH1D320KV
WLH1D320KV
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2000
WLH1D320KW
WLH1D320KW
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Siemens
2000
WLH1D320KY
WLH1D320KY
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2000
WLH1D320L
WLH1D320L
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Siemens
2000
WLH1D320LA
WLH1D320LA
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Siemens
2000
WLH1D320LB
WLH1D320LB
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Siemens
2000
WLH1D320LD
WLH1D320LD
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Siemens
2000
WLH1D320LE
WLH1D320LE
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Siemens
2000
WLH1D320LF
WLH1D320LF
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Siemens
2000
WLH1D320LG
WLH1D320LG
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Siemens
2000
WLH1D320LH
WLH1D320LH
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Siemens
2000
WLH1D320LJ
WLH1D320LJ
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Siemens
2000
WLH1D320LK
WLH1D320LK
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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.