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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
MDN4083LEA0422NMNXNENACWX
MDN4083LEA0422NMNXNENACWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENADAX
MDN4083LEA0422NMNXNENADAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENADCX
MDN4083LEA0422NMNXNENADCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENADPX
MDN4083LEA0422NMNXNENADPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENADSX
MDN4083LEA0422NMNXNENADSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENADWX
MDN4083LEA0422NMNXNENADWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENAMAX
MDN4083LEA0422NMNXNENAMAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENAMCX
MDN4083LEA0422NMNXNENAMCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENAMPX
MDN4083LEA0422NMNXNENAMPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENAMSX
MDN4083LEA0422NMNXNENAMSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENAMWX
MDN4083LEA0422NMNXNENAMWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENANAX
MDN4083LEA0422NMNXNENANAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENANCX
MDN4083LEA0422NMNXNENANCX
Limited Stock
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Cutler Hammer
800
MDN4083LEA0422NMNXNENANPX
MDN4083LEA0422NMNXNENANPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENANSX
MDN4083LEA0422NMNXNENANSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENANWX
MDN4083LEA0422NMNXNENANWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENCCAX
MDN4083LEA0422NMNXNENCCAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENCCCX
MDN4083LEA0422NMNXNENCCCX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENCCPX
MDN4083LEA0422NMNXNENCCPX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENCCSX
MDN4083LEA0422NMNXNENCCSX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENCCWX
MDN4083LEA0422NMNXNENCCWX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENCDAX
MDN4083LEA0422NMNXNENCDAX
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Cutler Hammer
800
MDN4083LEA0422NMNXNENCDCX
MDN4083LEA0422NMNXNENCDCX
Limited Stock
From
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Cutler Hammer
800
MDN4083LEA0422NMNXNENCDPX
MDN4083LEA0422NMNXNENCDPX
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.