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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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Manufacturer
Amperage
WLL2D316KG
WLL2D316KG
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Siemens
1600
WLL2D316KH
WLL2D316KH
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Siemens
1600
WLL2D316KJ
WLL2D316KJ
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Siemens
1600
WLL2D316KK
WLL2D316KK
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Siemens
1600
WLL2D316KL
WLL2D316KL
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Siemens
1600
WLL2D316KN
WLL2D316KN
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Siemens
1600
WLL2D316KP
WLL2D316KP
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Siemens
1600
WLL2D316KQ
WLL2D316KQ
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Siemens
1600
WLL2D316KR
WLL2D316KR
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Siemens
1600
WLL2D316KT
WLL2D316KT
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Siemens
1600
WLL2D316KU
WLL2D316KU
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Siemens
1600
WLL2D316KW
WLL2D316KW
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Siemens
1600
WLL2D316KY
WLL2D316KY
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Siemens
1600
WLL2D316L
WLL2D316L
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Siemens
1600
WLL2D316LA
WLL2D316LA
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Siemens
1600
WLL2D316LB
WLL2D316LB
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Siemens
1600
WLL2D316LC
WLL2D316LC
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Siemens
1600
WLL2D316LD
WLL2D316LD
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Siemens
1600
WLL2D316LE
WLL2D316LE
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Siemens
1600
WLL2D316LF
WLL2D316LF
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Siemens
1600
WLL2D316LG
WLL2D316LG
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Siemens
1600
WLL2D316LH
WLL2D316LH
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Siemens
1600
WLL2D316LJ
WLL2D316LJ
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Siemens
1600
WLL2D316LK
WLL2D316LK
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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.