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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
MDN4083LEA0422NMNXNYNANWX
MDN4083LEA0422NMNXNYNANWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNCCAX
MDN4083LEA0422NMNXNYNCCAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNCCCX
MDN4083LEA0422NMNXNYNCCCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNCCPX
MDN4083LEA0422NMNXNYNCCPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNCCSX
MDN4083LEA0422NMNXNYNCCSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNCCWX
MDN4083LEA0422NMNXNYNCCWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNCDAX
MDN4083LEA0422NMNXNYNCDAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNCDCX
MDN4083LEA0422NMNXNYNCDCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNCDPX
MDN4083LEA0422NMNXNYNCDPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNCDSX
MDN4083LEA0422NMNXNYNCDSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNCDWX
MDN4083LEA0422NMNXNYNCDWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNCMAX
MDN4083LEA0422NMNXNYNCMAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNCMCX
MDN4083LEA0422NMNXNYNCMCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNCMPX
MDN4083LEA0422NMNXNYNCMPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNCMSX
MDN4083LEA0422NMNXNYNCMSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNCMWX
MDN4083LEA0422NMNXNYNCMWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNCNAX
MDN4083LEA0422NMNXNYNCNAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNCNCX
MDN4083LEA0422NMNXNYNCNCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNCNPX
MDN4083LEA0422NMNXNYNCNPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNCNSX
MDN4083LEA0422NMNXNYNCNSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNCNWX
MDN4083LEA0422NMNXNYNCNWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNHCAX
MDN4083LEA0422NMNXNYNHCAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNHCCX
MDN4083LEA0422NMNXNYNHCCX
Limited Stock
From
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNHCPX
MDN4083LEA0422NMNXNYNHCPX
Limited Stock
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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.