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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
WLL1D316LD
WLL1D316LD
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Siemens
1600
WLL1D316LE
WLL1D316LE
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Siemens
1600
WLL1D316LF
WLL1D316LF
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Siemens
1600
WLL1D316LG
WLL1D316LG
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Siemens
1600
WLL1D316LH
WLL1D316LH
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Siemens
1600
WLL1D316LJ
WLL1D316LJ
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Siemens
1600
WLL1D316LK
WLL1D316LK
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Siemens
1600
WLL1D316LL
WLL1D316LL
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Siemens
1600
WLL1D316LN
WLL1D316LN
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Siemens
1600
WLL1D316LP
WLL1D316LP
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Siemens
1600
WLL1D316LQ
WLL1D316LQ
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Siemens
1600
WLL1D316LR
WLL1D316LR
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Siemens
1600
WLL1D316LT
WLL1D316LT
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Siemens
1600
WLL1D316LU
WLL1D316LU
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Siemens
1600
WLL1D316LW
WLL1D316LW
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Siemens
1600
WLL1D316LY
WLL1D316LY
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Siemens
1600
WLL1D316M
WLL1D316M
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Siemens
1600
WLL1D316MA
WLL1D316MA
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Siemens
1600
WLL1D316MB
WLL1D316MB
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Siemens
1600
WLL1D316MC
WLL1D316MC
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Siemens
1600
WLL1D316MD
WLL1D316MD
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Siemens
1600
WLL1D316ME
WLL1D316ME
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Siemens
1600
WLL1D316MF
WLL1D316MF
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Siemens
1600
WLL1D316MG
WLL1D316MG
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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.