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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
WLS1D320BL
WLS1D320BL
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Siemens
2000
WLS1D320BN
WLS1D320BN
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Siemens
2000
WLS1D320BP
WLS1D320BP
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Siemens
2000
WLS1D320BQ
WLS1D320BQ
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Siemens
2000
WLS1D320BR
WLS1D320BR
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Siemens
2000
WLS1D320BT
WLS1D320BT
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Siemens
2000
WLS1D320BU
WLS1D320BU
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Siemens
2000
WLS1D320BW
WLS1D320BW
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Siemens
2000
WLS1D320BY
WLS1D320BY
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Siemens
2000
WLS1D320C
WLS1D320C
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Siemens
2000
WLS1D320CA
WLS1D320CA
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Siemens
2000
WLS1D320CB
WLS1D320CB
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Siemens
2000
WLS1D320CC
WLS1D320CC
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Siemens
2000
WLS1D320CD
WLS1D320CD
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Siemens
2000
WLS1D320CE
WLS1D320CE
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Siemens
2000
WLS1D320CF
WLS1D320CF
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Siemens
2000
WLS1D320CG
WLS1D320CG
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Siemens
2000
WLS1D320CH
WLS1D320CH
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Siemens
2000
WLS1D320CJ
WLS1D320CJ
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Siemens
2000
WLS1D320CK
WLS1D320CK
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Siemens
2000
WLS1D320CL
WLS1D320CL
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Siemens
2000
WLS1D320CN
WLS1D320CN
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Siemens
2000
WLS1D320CP
WLS1D320CP
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Siemens
2000
WLS1D320CQ
WLS1D320CQ
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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.