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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
WLS1F320KE
WLS1F320KE
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2000
WLS1F320KF
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WLS1F320KG
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WLS1F320KH
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WLS1F320KJ
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WLS1F320KK
WLS1F320KK
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WLS1F320KL
WLS1F320KL
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WLS1F320KN
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WLS1F320KP
WLS1F320KP
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WLS1F320KQ
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WLS1F320KR
WLS1F320KR
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WLS1F320KT
WLS1F320KT
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2000
WLS1F320KU
WLS1F320KU
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2000
WLS1F320KW
WLS1F320KW
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2000
WLS1F320KY
WLS1F320KY
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2000
WLS1F320L
WLS1F320L
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2000
WLS1F320LA
WLS1F320LA
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2000
WLS1F320LB
WLS1F320LB
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2000
WLS1F320LC
WLS1F320LC
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2000
WLS1F320LD
WLS1F320LD
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2000
WLS1F320LE
WLS1F320LE
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2000
WLS1F320LF
WLS1F320LF
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2000
WLS1F320LG
WLS1F320LG
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Siemens
2000
WLS1F320LH
WLS1F320LH
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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.