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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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Part Number
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Manufacturer
Amperage
WLS1D316FY
WLS1D316FY
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Siemens
1600
WLS1D316G
WLS1D316G
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Siemens
1600
WLS1D316GA
WLS1D316GA
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Siemens
1600
WLS1D316GB
WLS1D316GB
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Siemens
1600
WLS1D316GC
WLS1D316GC
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Siemens
1600
WLS1D316GD
WLS1D316GD
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Siemens
1600
WLS1D316GE
WLS1D316GE
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Siemens
1600
WLS1D316GF
WLS1D316GF
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Siemens
1600
WLS1D316GG
WLS1D316GG
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Siemens
1600
WLS1D316GH
WLS1D316GH
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Siemens
1600
WLS1D316GJ
WLS1D316GJ
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Siemens
1600
WLS1D316GK
WLS1D316GK
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Siemens
1600
WLS1D316GL
WLS1D316GL
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Siemens
1600
WLS1D316GN
WLS1D316GN
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Siemens
1600
WLS1D316GP
WLS1D316GP
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Siemens
1600
WLS1D316GQ
WLS1D316GQ
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Siemens
1600
WLS1D316GR
WLS1D316GR
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Siemens
1600
WLS1D316GT
WLS1D316GT
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Siemens
1600
WLS1D316GU
WLS1D316GU
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Siemens
1600
WLS1D316GW
WLS1D316GW
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Siemens
1600
WLS1D316GY
WLS1D316GY
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Siemens
1600
WLS1D316H
WLS1D316H
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Siemens
1600
WLS1D316HA
WLS1D316HA
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Siemens
1600
WLS1D316HB
WLS1D316HB
Limited Stock
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Siemens
1600

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.