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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
WLS2D320AT
WLS2D320AT
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Siemens
2000
WLS2D320AU
WLS2D320AU
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Siemens
2000
WLS2D320AW
WLS2D320AW
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Siemens
2000
WLS2D320AY
WLS2D320AY
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2000
WLS2D320B
WLS2D320B
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Siemens
2000
WLS2D320BA
WLS2D320BA
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Siemens
2000
WLS2D320BB
WLS2D320BB
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Siemens
2000
WLS2D320BC
WLS2D320BC
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Siemens
2000
WLS2D320BD
WLS2D320BD
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Siemens
2000
WLS2D320BE
WLS2D320BE
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Siemens
2000
WLS2D320BF
WLS2D320BF
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Siemens
2000
WLS2D320BG
WLS2D320BG
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Siemens
2000
WLS2D320BH
WLS2D320BH
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Siemens
2000
WLS2D320BJ
WLS2D320BJ
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Siemens
2000
WLS2D320BK
WLS2D320BK
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Siemens
2000
WLS2D320BL
WLS2D320BL
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Siemens
2000
WLS2D320BN
WLS2D320BN
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Siemens
2000
WLS2D320BP
WLS2D320BP
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Siemens
2000
WLS2D320BQ
WLS2D320BQ
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Siemens
2000
WLS2D320BR
WLS2D320BR
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Siemens
2000
WLS2D320BT
WLS2D320BT
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Siemens
2000
WLS2D320BU
WLS2D320BU
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Siemens
2000
WLS2D320BW
WLS2D320BW
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Siemens
2000
WLS2D320BY
WLS2D320BY
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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.