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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
WLS2D320MN
WLS2D320MN
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Siemens
2000
WLS2D320MP
WLS2D320MP
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2000
WLS2D320MQ
WLS2D320MQ
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2000
WLS2D320MR
WLS2D320MR
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2000
WLS2D320MT
WLS2D320MT
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Siemens
2000
WLS2D320MU
WLS2D320MU
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Siemens
2000
WLS2D320MW
WLS2D320MW
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2000
WLS2D320MY
WLS2D320MY
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2000
WLS2D320N
WLS2D320N
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Siemens
2000
WLS2D320NA
WLS2D320NA
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Siemens
2000
WLS2D320NB
WLS2D320NB
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Siemens
2000
WLS2D320NC
WLS2D320NC
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Siemens
2000
WLS2D320ND
WLS2D320ND
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Siemens
2000
WLS2D320NE
WLS2D320NE
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Siemens
2000
WLS2D320NF
WLS2D320NF
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Siemens
2000
WLS2D320NG
WLS2D320NG
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Siemens
2000
WLS2D320NH
WLS2D320NH
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Siemens
2000
WLS2D320NJ
WLS2D320NJ
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Siemens
2000
WLS2D320NK
WLS2D320NK
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Siemens
2000
WLS2D320NL
WLS2D320NL
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Siemens
2000
WLS2D320NN
WLS2D320NN
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Siemens
2000
WLS2D320NP
WLS2D320NP
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Siemens
2000
WLS2D320NQ
WLS2D320NQ
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Siemens
2000
WLS2D320NR
WLS2D320NR
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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.