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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
MDN4083LEA0422NMNRNYNNCAX
MDN4083LEA0422NMNRNYNNCAX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNNCCX
MDN4083LEA0422NMNRNYNNCCX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNNCPX
MDN4083LEA0422NMNRNYNNCPX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNNCSX
MDN4083LEA0422NMNRNYNNCSX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNNCWX
MDN4083LEA0422NMNRNYNNCWX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNNDAX
MDN4083LEA0422NMNRNYNNDAX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNNDCX
MDN4083LEA0422NMNRNYNNDCX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNNDPX
MDN4083LEA0422NMNRNYNNDPX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNNDSX
MDN4083LEA0422NMNRNYNNDSX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNNDWX
MDN4083LEA0422NMNRNYNNDWX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNNMAX
MDN4083LEA0422NMNRNYNNMAX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNNMCX
MDN4083LEA0422NMNRNYNNMCX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNNMPX
MDN4083LEA0422NMNRNYNNMPX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNNMSX
MDN4083LEA0422NMNRNYNNMSX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNNMWX
MDN4083LEA0422NMNRNYNNMWX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNNNAX
MDN4083LEA0422NMNRNYNNNAX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNNNCX
MDN4083LEA0422NMNRNYNNNCX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNNNPX
MDN4083LEA0422NMNRNYNNNPX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNNNSX
MDN4083LEA0422NMNRNYNNNSX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNNNWX
MDN4083LEA0422NMNRNYNNNWX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNRCAX
MDN4083LEA0422NMNRNYNRCAX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNRCCX
MDN4083LEA0422NMNRNYNRCCX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNRCPX
MDN4083LEA0422NMNRNYNRCPX
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Cutler Hammer
800
MDN4083LEA0422NMNRNYNRCSX
MDN4083LEA0422NMNRNYNRCSX
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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.