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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
WLS1D320PQ
WLS1D320PQ
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Siemens
2000
WLS1D320PR
WLS1D320PR
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Siemens
2000
WLS1D320PT
WLS1D320PT
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Siemens
2000
WLS1D320PU
WLS1D320PU
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Siemens
2000
WLS1D320PW
WLS1D320PW
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Siemens
2000
WLS1D320PY
WLS1D320PY
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Siemens
2000
WLS1D320Q
WLS1D320Q
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Siemens
2000
WLS1D320QD
WLS1D320QD
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Siemens
2000
WLS1D320QE
WLS1D320QE
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Siemens
2000
WLS1D320QF
WLS1D320QF
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Siemens
2000
WLS1D320QG
WLS1D320QG
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Siemens
2000
WLS1D320QH
WLS1D320QH
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Siemens
2000
WLS1D320QJ
WLS1D320QJ
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Siemens
2000
WLS1D320QK
WLS1D320QK
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Siemens
2000
WLS1D320QL
WLS1D320QL
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Siemens
2000
WLS1D320QN
WLS1D320QN
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Siemens
2000
WLS1D320QP
WLS1D320QP
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Siemens
2000
WLS1D320QQ
WLS1D320QQ
Limited Stock
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Siemens
2000
WLS1D320QR
WLS1D320QR
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Siemens
2000
WLS1D320QT
WLS1D320QT
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From
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Siemens
2000
WLS1D320QU
WLS1D320QU
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Siemens
2000
WLS1D320QW
WLS1D320QW
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Siemens
2000
WLS1D320QY
WLS1D320QY
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Siemens
2000
WLS1D320R
WLS1D320R
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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.