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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
WLH2D320JB
WLH2D320JB
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Siemens
2000
WLH2D320KA
WLH2D320KA
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Siemens
2000
WLH2D320KB
WLH2D320KB
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Siemens
2000
WLH2D320LA
WLH2D320LA
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Siemens
2000
WLH2D320LB
WLH2D320LB
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Siemens
2000
WLH2D320MA
WLH2D320MA
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Siemens
2000
WLH2D320MB
WLH2D320MB
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Siemens
2000
WLH2D320NA
WLH2D320NA
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Siemens
2000
WLH2D320NB
WLH2D320NB
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Siemens
2000
WLH2D320PA
WLH2D320PA
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Siemens
2000
WLH2D320PB
WLH2D320PB
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Siemens
2000
WLH2D320QA
WLH2D320QA
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Siemens
2000
WLH2D320QB
WLH2D320QB
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Siemens
2000
WLH2D320R
WLH2D320R
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Siemens
2000
WLH2D320RA
WLH2D320RA
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Siemens
2000
WLH2D320RB
WLH2D320RB
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Siemens
2000
WLH2D320T
WLH2D320T
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Siemens
2000
WLH2D320TA
WLH2D320TA
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Siemens
2000
WLH2D320TB
WLH2D320TB
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Siemens
2000
WLH2D320U
WLH2D320U
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Siemens
2000
WLH2D320UA
WLH2D320UA
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Siemens
2000
WLH2D320UB
WLH2D320UB
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Siemens
2000
WLH2F308
WLH2F308
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Siemens
800
WLH2F308A
WLH2F308A
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Siemens
800

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.