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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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Amperage
WLL2F320KH
WLL2F320KH
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2000
WLL2F320KJ
WLL2F320KJ
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2000
WLL2F320KK
WLL2F320KK
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2000
WLL2F320KL
WLL2F320KL
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2000
WLL2F320KN
WLL2F320KN
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2000
WLL2F320KP
WLL2F320KP
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2000
WLL2F320KQ
WLL2F320KQ
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2000
WLL2F320KR
WLL2F320KR
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2000
WLL2F320KT
WLL2F320KT
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2000
WLL2F320KU
WLL2F320KU
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2000
WLL2F320KW
WLL2F320KW
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2000
WLL2F320KY
WLL2F320KY
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2000
WLL2F320L
WLL2F320L
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2000
WLL2F320LA
WLL2F320LA
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2000
WLL2F320LB
WLL2F320LB
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2000
WLL2F320LC
WLL2F320LC
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2000
WLL2F320LD
WLL2F320LD
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2000
WLL2F320LE
WLL2F320LE
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2000
WLL2F320LF
WLL2F320LF
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Siemens
2000
WLL2F320LG
WLL2F320LG
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Siemens
2000
WLL2F320LH
WLL2F320LH
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Siemens
2000
WLL2F320LJ
WLL2F320LJ
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Siemens
2000
WLL2F320LK
WLL2F320LK
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Siemens
2000
WLL2F320LL
WLL2F320LL
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Siemens
2000

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.