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
MDN4083LEA0422NMNXNNNANCX
MDN4083LEA0422NMNXNNNANCX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNANPX
MDN4083LEA0422NMNXNNNANPX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNANSX
MDN4083LEA0422NMNXNNNANSX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNANWX
MDN4083LEA0422NMNXNNNANWX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNCCAX
MDN4083LEA0422NMNXNNNCCAX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNCCCX
MDN4083LEA0422NMNXNNNCCCX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNCCPX
MDN4083LEA0422NMNXNNNCCPX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNCCSX
MDN4083LEA0422NMNXNNNCCSX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNCCWX
MDN4083LEA0422NMNXNNNCCWX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNCDAX
MDN4083LEA0422NMNXNNNCDAX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNCDCX
MDN4083LEA0422NMNXNNNCDCX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNCDPX
MDN4083LEA0422NMNXNNNCDPX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNCDSX
MDN4083LEA0422NMNXNNNCDSX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNCDWX
MDN4083LEA0422NMNXNNNCDWX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNCMAX
MDN4083LEA0422NMNXNNNCMAX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNCMCX
MDN4083LEA0422NMNXNNNCMCX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNCMPX
MDN4083LEA0422NMNXNNNCMPX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNCMSX
MDN4083LEA0422NMNXNNNCMSX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNCMWX
MDN4083LEA0422NMNXNNNCMWX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNCNAX
MDN4083LEA0422NMNXNNNCNAX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNCNCX
MDN4083LEA0422NMNXNNNCNCX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNCNPX
MDN4083LEA0422NMNXNNNCNPX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNCNSX
MDN4083LEA0422NMNXNNNCNSX
Limited Stock
From
Get Price
Cutler Hammer
800
MDN4083LEA0422NMNXNNNCNWX
MDN4083LEA0422NMNXNNNCNWX
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.