1. Home / 
  2. All Categories / 
  3. Circuit Breaker / 
  4. Insulated Case Circuit Breaker

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.
SORT BY
Part Number
PRICE
Manufacturer
Amperage
MDN4083LEA0422NMNRNYNHMPX
MDN4083LEA0422NMNRNYNHMPX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNHMSX
MDN4083LEA0422NMNRNYNHMSX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNHMWX
MDN4083LEA0422NMNRNYNHMWX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNHNAX
MDN4083LEA0422NMNRNYNHNAX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNHNCX
MDN4083LEA0422NMNRNYNHNCX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNHNPX
MDN4083LEA0422NMNRNYNHNPX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNHNSX
MDN4083LEA0422NMNRNYNHNSX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNHNWX
MDN4083LEA0422NMNRNYNHNWX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNKCAX
MDN4083LEA0422NMNRNYNKCAX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNKCCX
MDN4083LEA0422NMNRNYNKCCX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNKCPX
MDN4083LEA0422NMNRNYNKCPX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNKCSX
MDN4083LEA0422NMNRNYNKCSX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNKCWX
MDN4083LEA0422NMNRNYNKCWX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNKDAX
MDN4083LEA0422NMNRNYNKDAX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNKDCX
MDN4083LEA0422NMNRNYNKDCX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNKDPX
MDN4083LEA0422NMNRNYNKDPX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNKDSX
MDN4083LEA0422NMNRNYNKDSX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNKDWX
MDN4083LEA0422NMNRNYNKDWX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNKMAX
MDN4083LEA0422NMNRNYNKMAX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNKMCX
MDN4083LEA0422NMNRNYNKMCX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNKMPX
MDN4083LEA0422NMNRNYNKMPX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNKMSX
MDN4083LEA0422NMNRNYNKMSX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNKMWX
MDN4083LEA0422NMNRNYNKMWX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNRNYNKNAX
MDN4083LEA0422NMNRNYNKNAX
Limited Stock
From
Get Price
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.