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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
PRICE
Manufacturer
Amperage
WLL1D316D
WLL1D316D
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Siemens
1600
WLL1D316DA
WLL1D316DA
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Siemens
1600
WLL1D316DB
WLL1D316DB
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Siemens
1600
WLL1D316DC
WLL1D316DC
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Siemens
1600
WLL1D316DD
WLL1D316DD
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Siemens
1600
WLL1D316DE
WLL1D316DE
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Siemens
1600
WLL1D316DF
WLL1D316DF
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Siemens
1600
WLL1D316DG
WLL1D316DG
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Siemens
1600
WLL1D316DH
WLL1D316DH
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Siemens
1600
WLL1D316DJ
WLL1D316DJ
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Siemens
1600
WLL1D316DK
WLL1D316DK
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Siemens
1600
WLL1D316DL
WLL1D316DL
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Siemens
1600
WLL1D316DN
WLL1D316DN
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Siemens
1600
WLL1D316DP
WLL1D316DP
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Siemens
1600
WLL1D316DQ
WLL1D316DQ
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Siemens
1600
WLL1D316DR
WLL1D316DR
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Siemens
1600
WLL1D316DT
WLL1D316DT
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Siemens
1600
WLL1D316DU
WLL1D316DU
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Siemens
1600
WLL1D316DW
WLL1D316DW
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Siemens
1600
WLL1D316DY
WLL1D316DY
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Siemens
1600
WLL1D316E
WLL1D316E
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Siemens
1600
WLL1D316EA
WLL1D316EA
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Siemens
1600
WLL1D316EB
WLL1D316EB
Limited Stock
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Siemens
1600
WLL1D316EC
WLL1D316EC
Limited Stock
From
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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.