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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
WLL2D320GR
WLL2D320GR
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2000
WLL2D320GT
WLL2D320GT
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2000
WLL2D320GU
WLL2D320GU
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2000
WLL2D320GW
WLL2D320GW
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2000
WLL2D320GY
WLL2D320GY
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2000
WLL2D320H
WLL2D320H
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2000
WLL2D320HA
WLL2D320HA
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2000
WLL2D320HB
WLL2D320HB
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2000
WLL2D320HC
WLL2D320HC
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2000
WLL2D320HD
WLL2D320HD
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2000
WLL2D320HE
WLL2D320HE
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2000
WLL2D320HF
WLL2D320HF
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2000
WLL2D320HG
WLL2D320HG
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2000
WLL2D320HH
WLL2D320HH
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Siemens
2000
WLL2D320HJ
WLL2D320HJ
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Siemens
2000
WLL2D320HK
WLL2D320HK
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Siemens
2000
WLL2D320HL
WLL2D320HL
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Siemens
2000
WLL2D320HN
WLL2D320HN
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Siemens
2000
WLL2D320HP
WLL2D320HP
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Siemens
2000
WLL2D320HQ
WLL2D320HQ
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Siemens
2000
WLL2D320HR
WLL2D320HR
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Siemens
2000
WLL2D320HT
WLL2D320HT
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Siemens
2000
WLL2D320HU
WLL2D320HU
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Siemens
2000
WLL2D320HW
WLL2D320HW
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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.