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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
Manufacturer
Amperage
MDN4083LEA0422NMNXNENCDSX
MDN4083LEA0422NMNXNENCDSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENCDWX
MDN4083LEA0422NMNXNENCDWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENCMAX
MDN4083LEA0422NMNXNENCMAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENCMCX
MDN4083LEA0422NMNXNENCMCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENCMPX
MDN4083LEA0422NMNXNENCMPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENCMSX
MDN4083LEA0422NMNXNENCMSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENCMWX
MDN4083LEA0422NMNXNENCMWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENCNAX
MDN4083LEA0422NMNXNENCNAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENCNCX
MDN4083LEA0422NMNXNENCNCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENCNPX
MDN4083LEA0422NMNXNENCNPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENCNSX
MDN4083LEA0422NMNXNENCNSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENCNWX
MDN4083LEA0422NMNXNENCNWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENHCAX
MDN4083LEA0422NMNXNENHCAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENHCCX
MDN4083LEA0422NMNXNENHCCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENHCPX
MDN4083LEA0422NMNXNENHCPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENHCSX
MDN4083LEA0422NMNXNENHCSX
Limited Stock
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Cutler Hammer
800
MDN4083LEA0422NMNXNENHCWX
MDN4083LEA0422NMNXNENHCWX
Limited Stock
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Cutler Hammer
800
MDN4083LEA0422NMNXNENHDAX
MDN4083LEA0422NMNXNENHDAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENHDCX
MDN4083LEA0422NMNXNENHDCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENHDPX
MDN4083LEA0422NMNXNENHDPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENHDSX
MDN4083LEA0422NMNXNENHDSX
Limited Stock
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Cutler Hammer
800
MDN4083LEA0422NMNXNENHDWX
MDN4083LEA0422NMNXNENHDWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENHMAX
MDN4083LEA0422NMNXNENHMAX
Limited Stock
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Cutler Hammer
800
MDN4083LEA0422NMNXNENHMCX
MDN4083LEA0422NMNXNENHMCX
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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.