KTN-R-400 - 400Amp Fuse

KTN-R-400 - 400Amp Fuse

When you're selecting a 400A fuse, don't rely on appearance or amperage alone. The Eaton Bussmann KTN-R-400 is specifically rated for 400A at 250 Vac/Vdc, is Class RK1, and has a blade-end x blade-end connection. Its interrupt ratings are 200 kAIC at 250 Vac and 100 kAIC at 250 Vdc, making it essential for maintenance teams and electricians.

Key Features and Benefits

• 400A rating — clearly identifies the amperage of the KTN-R-400 for specification matching.
• 250 Vac and 250 Vdc ratings let buyers verify both the AC and DC voltage information supplied for this model.
• Class RK1 classification gives maintenance personnel an important specification to check against equipment documentation.
• The blade-end-to-blade-end connection provides a straightforward physical connection detail for replacement comparison.
• Single-element construction adds another manufacturer-specified characteristic to confirm when identifying the correct fuse.
• The KTN-R-400 specifies melamine glass tube material.
• 70/30 brass end cap is listed as a special feature.
• Non-indicating configuration—the manufacturer lists the model as non-indicating.

Technical Specifications

• Product Name: Eaton Bussmann series KTN-R fuse
  
• Catalog Number: KTN-R-400
  
• UPC: 051712407250
  
• Product Type: Fuse
  
• Amperage Rating: 400 A
  
• Voltage Rating: 250 Vac, 250 Vdc
  
• Interrupt Rating: 200 kAIC at 250 Vac; 100 kAIC at 250 Vdc
  
• Class: Class RK1
  
• Material: Melamine glass tube
  
• Number of Elements: 1
  
• Connection: Blade end x blade end
  
• Fuse Indicator: Non-indicating
  
• Special Feature: 70/30 brass end cap
  
• Product Length/Depth: 8.63 in
  
• Product Height: 2.06 in
  
• Product Width: 2.06 in
  
• Product Weight: 1.94 lb
  

Material Compliance and Certifications

The KTN-R-400 features a melamine glass tube and a 70/30 brass end cap. The supplied manufacturer data lists compliance as: Not Applicable. The provided specifications include no additional certifications, so we assume and add none here.

Where It Works Best

The Eaton Bussmann KTN-R-400 fuse is best suited for equipment whose documentation calls for a 400A Class RK1 fuse rated for 250 Vac or 250 Vdc and whose required connection and physical dimensions match this model. Its manufacturer-listed interrupt ratings are 200 kAIC at 250 Vac and 100 kAIC at 250 Vdc, making those values important parts of the specification check rather than details to overlook.