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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
MDN4083LEA0122NMNHNENCDWX
MDN4083LEA0122NMNHNENCDWX
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Cutler Hammer
800
MDN4083LEA0122NMNHNENCMAX
MDN4083LEA0122NMNHNENCMAX
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Cutler Hammer
800
MDN4083LEA0122NMNHNENCMCX
MDN4083LEA0122NMNHNENCMCX
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Cutler Hammer
800
MDN4083LEA0122NMNHNENCMPX
MDN4083LEA0122NMNHNENCMPX
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Cutler Hammer
800
MDN4083LEA0122NMNHNENCMSX
MDN4083LEA0122NMNHNENCMSX
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Cutler Hammer
800
MDN4083LEA0122NMNHNENCMWX
MDN4083LEA0122NMNHNENCMWX
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Cutler Hammer
800
MDN4083LEA0122NMNHNENCNAX
MDN4083LEA0122NMNHNENCNAX
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Cutler Hammer
800
MDN4083LEA0122NMNHNENCNCX
MDN4083LEA0122NMNHNENCNCX
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Cutler Hammer
800
MDN4083LEA0122NMNHNENCNPX
MDN4083LEA0122NMNHNENCNPX
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Cutler Hammer
800
MDN4083LEA0122NMNHNENCNSX
MDN4083LEA0122NMNHNENCNSX
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Cutler Hammer
800
MDN4083LEA0122NMNHNENCNWX
MDN4083LEA0122NMNHNENCNWX
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Cutler Hammer
800
MDN4083LEA0122NMNHNENHCAX
MDN4083LEA0122NMNHNENHCAX
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Cutler Hammer
800
MDN4083LEA0122NMNHNENHCCX
MDN4083LEA0122NMNHNENHCCX
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Cutler Hammer
800
MDN4083LEA0122NMNHNENHCPX
MDN4083LEA0122NMNHNENHCPX
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Cutler Hammer
800
MDN4083LEA0122NMNHNENHCSX
MDN4083LEA0122NMNHNENHCSX
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Cutler Hammer
800
MDN4083LEA0122NMNHNENHCWX
MDN4083LEA0122NMNHNENHCWX
Limited Stock
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Cutler Hammer
800
MDN4083LEA0122NMNHNENHDAX
MDN4083LEA0122NMNHNENHDAX
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Cutler Hammer
800
MDN4083LEA0122NMNHNENHDCX
MDN4083LEA0122NMNHNENHDCX
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Cutler Hammer
800
MDN4083LEA0122NMNHNENHDPX
MDN4083LEA0122NMNHNENHDPX
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Cutler Hammer
800
MDN4083LEA0122NMNHNENHDSX
MDN4083LEA0122NMNHNENHDSX
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Cutler Hammer
800
MDN4083LEA0122NMNHNENHDWX
MDN4083LEA0122NMNHNENHDWX
Limited Stock
From
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Cutler Hammer
800
MDN4083LEA0122NMNHNENHMAX
MDN4083LEA0122NMNHNENHMAX
Limited Stock
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Cutler Hammer
800
MDN4083LEA0122NMNHNENHMCX
MDN4083LEA0122NMNHNENHMCX
Limited Stock
From
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Cutler Hammer
800
MDN4083LEA0122NMNHNENHMPX
MDN4083LEA0122NMNHNENHMPX
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.