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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
WLH1D320NF
WLH1D320NF
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Siemens
2000
WLH1D320NG
WLH1D320NG
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Siemens
2000
WLH1D320NH
WLH1D320NH
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Siemens
2000
WLH1D320NJ
WLH1D320NJ
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2000
WLH1D320NK
WLH1D320NK
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Siemens
2000
WLH1D320NL
WLH1D320NL
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Siemens
2000
WLH1D320NN
WLH1D320NN
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Siemens
2000
WLH1D320NP
WLH1D320NP
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2000
WLH1D320NQ
WLH1D320NQ
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Siemens
2000
WLH1D320NR
WLH1D320NR
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Siemens
2000
WLH1D320NT
WLH1D320NT
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Siemens
2000
WLH1D320NU
WLH1D320NU
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Siemens
2000
WLH1D320NV
WLH1D320NV
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Siemens
2000
WLH1D320NW
WLH1D320NW
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Siemens
2000
WLH1D320NY
WLH1D320NY
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Siemens
2000
WLH1D320PG
WLH1D320PG
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Siemens
2000
WLH1D320PH
WLH1D320PH
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Siemens
2000
WLH1D320PJ
WLH1D320PJ
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Siemens
2000
WLH1D320PK
WLH1D320PK
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Siemens
2000
WLH1D320PL
WLH1D320PL
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Siemens
2000
WLH1D320PN
WLH1D320PN
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Siemens
2000
WLH1D320PP
WLH1D320PP
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Siemens
2000
WLH1D320PQ
WLH1D320PQ
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Siemens
2000
WLH1D320PR
WLH1D320PR
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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.