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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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PRICE
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Amperage
MDN4083LEA0422NMNXNENKNCX
MDN4083LEA0422NMNXNENKNCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENKNPX
MDN4083LEA0422NMNXNENKNPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENKNSX
MDN4083LEA0422NMNXNENKNSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENKNWX
MDN4083LEA0422NMNXNENKNWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENLCAX
MDN4083LEA0422NMNXNENLCAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENLCCX
MDN4083LEA0422NMNXNENLCCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENLCPX
MDN4083LEA0422NMNXNENLCPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENLCSX
MDN4083LEA0422NMNXNENLCSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENLCWX
MDN4083LEA0422NMNXNENLCWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENLDAX
MDN4083LEA0422NMNXNENLDAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENLDCX
MDN4083LEA0422NMNXNENLDCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENLDPX
MDN4083LEA0422NMNXNENLDPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENLDSX
MDN4083LEA0422NMNXNENLDSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENLDWX
MDN4083LEA0422NMNXNENLDWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENLMAX
MDN4083LEA0422NMNXNENLMAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENLMCX
MDN4083LEA0422NMNXNENLMCX
Limited Stock
From
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Cutler Hammer
800
MDN4083LEA0422NMNXNENLMPX
MDN4083LEA0422NMNXNENLMPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENLMSX
MDN4083LEA0422NMNXNENLMSX
Limited Stock
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Cutler Hammer
800
MDN4083LEA0422NMNXNENLMWX
MDN4083LEA0422NMNXNENLMWX
Limited Stock
From
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Cutler Hammer
800
MDN4083LEA0422NMNXNENLNAX
MDN4083LEA0422NMNXNENLNAX
Limited Stock
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Cutler Hammer
800
MDN4083LEA0422NMNXNENLNCX
MDN4083LEA0422NMNXNENLNCX
Limited Stock
From
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Cutler Hammer
800
MDN4083LEA0422NMNXNENLNPX
MDN4083LEA0422NMNXNENLNPX
Limited Stock
From
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Cutler Hammer
800
MDN4083LEA0422NMNXNENLNSX
MDN4083LEA0422NMNXNENLNSX
Limited Stock
From
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Cutler Hammer
800
MDN4083LEA0422NMNXNENLNWX
MDN4083LEA0422NMNXNENLNWX
Limited Stock
From
Get Price
Cutler Hammer
800

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.