ND63B800 - 800Amp Circuit Breaker

ND63B800 - 800Amp Circuit Breaker

The ND63B800 is an 800-amp, 3-pole molded case circuit breaker from the ND6 family. It's a practical option when you're working on existing equipment and need a breaker that matches the original electrical ratings, physical size, and connection requirements. The breaker has an interchangeable trip unit and comes with load-side lugs.

For AC applications, the ND63B800 is rated 25kAIC at 600VAC, 50kAIC at 480VAC, and 65kAIC at 240VAC. It also carries a 30kAIC rating at 250VDC for applicable 2-pole applications. The breaker measures approximately 16 inches high, 9 inches wide, and 6 inches deep.

If you're replacing a breaker in older equipment, those details matter. A similar-looking breaker isn't necessarily the right fit. Check the amperage, number of poles, voltage, interrupting rating, trip configuration, dimensions, and lug arrangement against the breaker being replaced. When those requirements line up, the ND63B800 can provide the form, fit, and function needed to keep compatible equipment in service. When selected, installed, and maintained correctly, it's built to last.

Key Features and Benefits

• 800-amp rating for applications requiring an 800A breaker
• 3-pole design for compatible three-phase systems
• Type ND6 molded case circuit breaker
• Interchangeable trip unit
• 25kAIC at 600VAC
• 50kAIC at 480VAC
• 65kAIC at 240VAC
• 30kAIC at 250VDC for applicable 2-pole applications
• Load-side lugs included
• Suitable for matching an existing ND6 breaker where specifications align
  

Technical Specifications

• Part Number: ND63B800
  
• Type: ND6
  
• Breaker Style: Molded Case Circuit Breaker
  
• Amperage: 800A
  
• Poles: 3
  
• 600VAC Interrupting Rating: 25kAIC
  
• 480VAC Interrupting Rating: 50kAIC
  
• 240VAC Interrupting Rating: 65kAIC
  
• 250VDC Interrupting Rating: 30kAIC for applicable 2-pole applications
  
• Trip Unit: Interchangeable
  
• Lugs: Load-side lugs included
  
• Height: 16 in.
  
• Width: 9 in.
  
• Depth: 6 in.
  

Material Compliance and Certifications

• The product specifications provided didn't include certification, listing, or material-compliance information. Don't assume these details based on the ND63B800 part number alone.
• If your application requires a particular listing, certification, or compliance standard, check the markings on the individual breaker and the applicable equipment documentation before installation.
  

Where It Works Best

• The ND63B800 makes the most sense when maintaining existing equipment that already calls for an 800A Type ND6 breaker with matching specifications. This may include compatible switchgear, distribution equipment, industrial electrical systems, and other established installations.
• For replacement work, start with the existing breaker rather than relying on appearance alone. Match the ND63B800 part number, 800A rating, three poles, voltage and AIC ratings, dimensions, trip configuration, and lug arrangement to the equipment requirements.