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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
WLL1D316HT
WLL1D316HT
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Siemens
1600
WLL1D316HU
WLL1D316HU
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Siemens
1600
WLL1D316HW
WLL1D316HW
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Siemens
1600
WLL1D316HY
WLL1D316HY
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Siemens
1600
WLL1D316J
WLL1D316J
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Siemens
1600
WLL1D316JA
WLL1D316JA
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Siemens
1600
WLL1D316JB
WLL1D316JB
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Siemens
1600
WLL1D316JC
WLL1D316JC
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Siemens
1600
WLL1D316JD
WLL1D316JD
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Siemens
1600
WLL1D316JE
WLL1D316JE
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Siemens
1600
WLL1D316JF
WLL1D316JF
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Siemens
1600
WLL1D316JG
WLL1D316JG
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Siemens
1600
WLL1D316JH
WLL1D316JH
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Siemens
1600
WLL1D316JJ
WLL1D316JJ
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Siemens
1600
WLL1D316JK
WLL1D316JK
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Siemens
1600
WLL1D316JL
WLL1D316JL
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Siemens
1600
WLL1D316JN
WLL1D316JN
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Siemens
1600
WLL1D316JP
WLL1D316JP
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Siemens
1600
WLL1D316JQ
WLL1D316JQ
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Siemens
1600
WLL1D316JR
WLL1D316JR
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Siemens
1600
WLL1D316JT
WLL1D316JT
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Siemens
1600
WLL1D316JU
WLL1D316JU
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Siemens
1600
WLL1D316JW
WLL1D316JW
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Siemens
1600
WLL1D316JY
WLL1D316JY
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.