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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
MDN4083LEA0422NMNXNYNHCSX
MDN4083LEA0422NMNXNYNHCSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNHCWX
MDN4083LEA0422NMNXNYNHCWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNHDAX
MDN4083LEA0422NMNXNYNHDAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNHDCX
MDN4083LEA0422NMNXNYNHDCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNHDPX
MDN4083LEA0422NMNXNYNHDPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNHDSX
MDN4083LEA0422NMNXNYNHDSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNHDWX
MDN4083LEA0422NMNXNYNHDWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNHMAX
MDN4083LEA0422NMNXNYNHMAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNHMCX
MDN4083LEA0422NMNXNYNHMCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNHMPX
MDN4083LEA0422NMNXNYNHMPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNHMSX
MDN4083LEA0422NMNXNYNHMSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNHMWX
MDN4083LEA0422NMNXNYNHMWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNHNAX
MDN4083LEA0422NMNXNYNHNAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNHNCX
MDN4083LEA0422NMNXNYNHNCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNHNPX
MDN4083LEA0422NMNXNYNHNPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNHNSX
MDN4083LEA0422NMNXNYNHNSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNHNWX
MDN4083LEA0422NMNXNYNHNWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNKCAX
MDN4083LEA0422NMNXNYNKCAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNKCCX
MDN4083LEA0422NMNXNYNKCCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNKCPX
MDN4083LEA0422NMNXNYNKCPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNKCSX
MDN4083LEA0422NMNXNYNKCSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNKCWX
MDN4083LEA0422NMNXNYNKCWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNKDAX
MDN4083LEA0422NMNXNYNKDAX
Limited Stock
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNKDCX
MDN4083LEA0422NMNXNYNKDCX
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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.