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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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Part Number
PRICE
Manufacturer
Amperage
MDN4083LEA0222NMNHNENLDPX
MDN4083LEA0222NMNHNENLDPX
Limited Stock
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Cutler Hammer
800
MDN4083LEA0222NMNHNENLDSX
MDN4083LEA0222NMNHNENLDSX
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Cutler Hammer
800
MDN4083LEA0222NMNHNENLDWX
MDN4083LEA0222NMNHNENLDWX
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Cutler Hammer
800
MDN4083LEA0222NMNHNENLMAX
MDN4083LEA0222NMNHNENLMAX
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Cutler Hammer
800
MDN4083LEA0222NMNHNENLMCX
MDN4083LEA0222NMNHNENLMCX
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Cutler Hammer
800
MDN4083LEA0222NMNHNENLMPX
MDN4083LEA0222NMNHNENLMPX
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Cutler Hammer
800
MDN4083LEA0222NMNHNENLMSX
MDN4083LEA0222NMNHNENLMSX
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Cutler Hammer
800
MDN4083LEA0222NMNHNENLMWX
MDN4083LEA0222NMNHNENLMWX
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Cutler Hammer
800
MDN4083LEA0222NMNHNENLNAX
MDN4083LEA0222NMNHNENLNAX
Limited Stock
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Cutler Hammer
800
MDN4083LEA0222NMNHNENLNCX
MDN4083LEA0222NMNHNENLNCX
Limited Stock
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Cutler Hammer
800
MDN4083LEA0222NMNHNENLNPX
MDN4083LEA0222NMNHNENLNPX
Limited Stock
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Cutler Hammer
800
MDN4083LEA0222NMNHNENLNSX
MDN4083LEA0222NMNHNENLNSX
Limited Stock
From
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Cutler Hammer
800
MDN4083LEA0222NMNHNENLNWX
MDN4083LEA0222NMNHNENLNWX
Limited Stock
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Cutler Hammer
800
MDN4083LEA0222NMNHNENNCAX
MDN4083LEA0222NMNHNENNCAX
Limited Stock
From
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Cutler Hammer
800
MDN4083LEA0222NMNHNENNCCX
MDN4083LEA0222NMNHNENNCCX
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From
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Cutler Hammer
800
MDN4083LEA0222NMNHNENNCPX
MDN4083LEA0222NMNHNENNCPX
Limited Stock
From
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Cutler Hammer
800
MDN4083LEA0222NMNHNENNCSX
MDN4083LEA0222NMNHNENNCSX
Limited Stock
From
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Cutler Hammer
800
MDN4083LEA0222NMNHNENNCWX
MDN4083LEA0222NMNHNENNCWX
Limited Stock
From
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Cutler Hammer
800
MDN4083LEA0222NMNHNENNDAX
MDN4083LEA0222NMNHNENNDAX
Limited Stock
From
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Cutler Hammer
800
MDN4083LEA0222NMNHNENNDCX
MDN4083LEA0222NMNHNENNDCX
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Cutler Hammer
800
MDN4083LEA0222NMNHNENNDPX
MDN4083LEA0222NMNHNENNDPX
Limited Stock
From
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Cutler Hammer
800
MDN4083LEA0222NMNHNENNDSX
MDN4083LEA0222NMNHNENNDSX
Limited Stock
From
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Cutler Hammer
800
MDN4083LEA0222NMNHNENNDWX
MDN4083LEA0222NMNHNENNDWX
Limited Stock
From
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Cutler Hammer
800
MDN4083LEA0222NMNHNENNMAX
MDN4083LEA0222NMNHNENNMAX
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.