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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
WLH1F320PV
WLH1F320PV
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Siemens
2000
WLH1F320PW
WLH1F320PW
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2000
WLH1F320PY
WLH1F320PY
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Siemens
2000
WLH1F320QA
WLH1F320QA
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Siemens
2000
WLH1F320QB
WLH1F320QB
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Siemens
2000
WLH1F320QD
WLH1F320QD
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Siemens
2000
WLH1F320QE
WLH1F320QE
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Siemens
2000
WLH1F320QF
WLH1F320QF
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Siemens
2000
WLH1F320QG
WLH1F320QG
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Siemens
2000
WLH1F320QH
WLH1F320QH
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Siemens
2000
WLH1F320QJ
WLH1F320QJ
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Siemens
2000
WLH1F320QK
WLH1F320QK
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Siemens
2000
WLH1F320QL
WLH1F320QL
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Siemens
2000
WLH1F320QN
WLH1F320QN
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Siemens
2000
WLH1F320QP
WLH1F320QP
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Siemens
2000
WLH1F320QQ
WLH1F320QQ
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Siemens
2000
WLH1F320QR
WLH1F320QR
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Siemens
2000
WLH1F320QT
WLH1F320QT
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Siemens
2000
WLH1F320QU
WLH1F320QU
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Siemens
2000
WLH1F320QV
WLH1F320QV
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Siemens
2000
WLH1F320QW
WLH1F320QW
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Siemens
2000
WLH1F320QY
WLH1F320QY
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Siemens
2000
WLH1F320RA
WLH1F320RA
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Siemens
2000
WLH1F320RB
WLH1F320RB
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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.