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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
MDN4083LEA0422NMNXNNNKCWX
MDN4083LEA0422NMNXNNNKCWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNKDAX
MDN4083LEA0422NMNXNNNKDAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNKDCX
MDN4083LEA0422NMNXNNNKDCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNKDPX
MDN4083LEA0422NMNXNNNKDPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNKDSX
MDN4083LEA0422NMNXNNNKDSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNKDWX
MDN4083LEA0422NMNXNNNKDWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNKMAX
MDN4083LEA0422NMNXNNNKMAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNKMCX
MDN4083LEA0422NMNXNNNKMCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNKMPX
MDN4083LEA0422NMNXNNNKMPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNKMSX
MDN4083LEA0422NMNXNNNKMSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNKMWX
MDN4083LEA0422NMNXNNNKMWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNKNAX
MDN4083LEA0422NMNXNNNKNAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNKNCX
MDN4083LEA0422NMNXNNNKNCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNKNPX
MDN4083LEA0422NMNXNNNKNPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNKNSX
MDN4083LEA0422NMNXNNNKNSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNKNWX
MDN4083LEA0422NMNXNNNKNWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNLCAX
MDN4083LEA0422NMNXNNNLCAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNLCCX
MDN4083LEA0422NMNXNNNLCCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNLCPX
MDN4083LEA0422NMNXNNNLCPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNLCSX
MDN4083LEA0422NMNXNNNLCSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNLCWX
MDN4083LEA0422NMNXNNNLCWX
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From
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNLDAX
MDN4083LEA0422NMNXNNNLDAX
Limited Stock
From
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNLDCX
MDN4083LEA0422NMNXNNNLDCX
Limited Stock
From
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Cutler Hammer
800
MDN4083LEA0422NMNXNNNLDPX
MDN4083LEA0422NMNXNNNLDPX
Limited Stock
From
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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.