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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
MDN4083LEA0422NMNXNYNYMWX
MDN4083LEA0422NMNXNYNYMWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNYNAX
MDN4083LEA0422NMNXNYNYNAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNYNCX
MDN4083LEA0422NMNXNYNYNCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNYNPX
MDN4083LEA0422NMNXNYNYNPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNYNSX
MDN4083LEA0422NMNXNYNYNSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNYNYNWX
MDN4083LEA0422NMNXNYNYNWX
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Cutler Hammer
800
MDN4083LEA0452NMNNNENNNAX
MDN4083LEA0452NMNNNENNNAX
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Cutler Hammer
800
MDN4083LEA045GNMNNNENNNAX
MDN4083LEA045GNMNNNENNNAX
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Cutler Hammer
800
MDN4083LEA04CCNMNNNENNNAX
MDN4083LEA04CCNMNNNENNNAX
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Cutler Hammer
800
MDN4083LEA04CENMNNNENNNAX
MDN4083LEA04CENMNNNENNNAX
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Cutler Hammer
800
MDN4083LEA04CFNMNNNENNNAX
MDN4083LEA04CFNMNNNENNNAX
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Cutler Hammer
800
MDN4083LEA04CHNMNNNENNNAX
MDN4083LEA04CHNMNNNENNNAX
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Cutler Hammer
800
MDN4083LEA04CMNMNNNENNNAX
MDN4083LEA04CMNMNNNENNNAX
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Cutler Hammer
800
MDN4083LEA04CNNMNNNENNNAX
MDN4083LEA04CNNMNNNENNNAX
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Cutler Hammer
800
MDN4083LEA04CTNMNNNENNNAX
MDN4083LEA04CTNMNNNENNNAX
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Cutler Hammer
800
MDN4083LEA04CUNMNNNENNNAX
MDN4083LEA04CUNMNNNENNNAX
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Cutler Hammer
800
MDN4083LEA04CVNMNNNENNNAX
MDN4083LEA04CVNMNNNENNNAX
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Cutler Hammer
800
MDN4083LEA04M2NMNNNENNNAX
MDN4083LEA04M2NMNNNENNNAX
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Cutler Hammer
800
MDN4083LEA04MCNMNNNENNNAX
MDN4083LEA04MCNMNNNENNNAX
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Cutler Hammer
800
MDN4083LEA04MENMNNNENNNAX
MDN4083LEA04MENMNNNENNNAX
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Cutler Hammer
800
MDN4083LEA04MFNMNNNENNNAX
MDN4083LEA04MFNMNNNENNNAX
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Cutler Hammer
800
MDN4083LEA04MGNMNNNENNNAX
MDN4083LEA04MGNMNNNENNNAX
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Cutler Hammer
800
MDN4083LEA04MHNMNNNENNNAX
MDN4083LEA04MHNMNNNENNNAX
Limited Stock
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Cutler Hammer
800
MDN4083LEA04MMNMNNNENNNAX
MDN4083LEA04MMNMNNNENNNAX
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.