KMB3F800 - 800Amp Max. *Frame ONLY*

KMB3F800 - 800 Amp Max. *Frame ONLY*

The KMB3F800 is an 800-amp, 3-pole Type KMB molded case circuit breaker frame only. That distinction matters if you're matching parts for equipment already in service—you'll want to make sure you need the frame, not a complete breaker assembly. When those details line up, the KMB3F800 may be a suitable form-, fit-, and functional replacement in compatible legacy equipment. Properly selected, assembled with the components required by the application, installed, and operated within its stated ratings, it's built to last in the service it was designed for.

Key Features and Benefits

• 800A rating: Designed around an 800-amp KMB frame requirement.
• 3-pole configuration: Matches applications calling for a three-pole arrangement.
• Type KMB: A key identifier when comparing the frame with existing equipment.
• Frame-only configuration: Useful when the application specifically requires the breaker frame rather than a complete assembled breaker.
• 40°C specification: Another key detail to verify when matching to the application.
  

Technical Specifications

• Part Number: KMB3F800
  
• Product Type: Molded Case Circuit Breaker Frame
  
• Configuration: Frame Only
  
• Type: KMB
  
• Amperage: 800A
  
• Poles: 3
  
• AIC at 600VAC: 22k
  
• AIC at 480VAC: 30k
  
• AIC at 240VAC: 42k
  
• Temperature Specification: 40°C
  
• Width: 8.25 in.
  
• Height/Length: 14.50 in.
  
• Depth: 5.50 in.
  
• Dimensions: 8.25"W x 14.50"L x 5.50"D
  
• Approximate Weight: 55.00 lbs.
  

Material Compliance and Certifications

No specific certification or material-compliance information was provided for the KMB3F800. For that reason, do not assume certifications such as UL listing, RoHS, or REACH.

Where It Works Best

The KMB3F800 makes the most sense in existing and legacy electrical equipment that calls for an 800A, 3-pole Type KMB circuit breaker frame with matching physical and electrical requirements. Because this is a frame-only item, do not treat it as a complete molded case circuit breaker.

For replacement work, list the existing component specifications next to the KMB3F800 and confirm the details: KMB type, 800A rating, three poles, dimensions, 40°C specification, system voltage, and the AIC required at that voltage. Also confirm the mounting arrangement and any trip unit, terminals or lugs, accessories, or other components needed to complete the intended assembly, since those details were not provided here.