KTN-R-125 - 125Amp Fuse

KTN-R-125 - 125Amp Fuse

A replacement fuse needs to match more than the amperage printed on the label. The Eaton Bussmann KTN-R-125 is a 125A Class RK1 fuse rated for 250 Vac and 250 Vdc, with manufacturer-listed interrupt ratings of 200 kAIC at 250 Vac and 100 kAIC at 250 Vdc. It uses a single-element configuration and has a non-indicating design. For maintenance teams, electricians, and electrical buyers, the KTN-R-125 catalog number, 125A rating, Class RK1 designation, voltage ratings, interrupt ratings, and dimensions provide practical specifications to compare against your equipment requirements before installation.

Key Features and Benefits

• 125A amperage rating clearly identifies the electrical rating for replacement verification.
• Rated for both 250 Vac and 250 Vdc.
• Class RK1 classification makes it easier to confirm the required fuse class against equipment documentation.
• Uses one element, giving buyers another specification to verify when matching an existing fuse.
• Non-indicating configuration with no built-in fuse-status indicator.

Technical Specifications

• Product Name: Eaton Bussmann Series KTN-R Fuse
  
• Catalog Number: KTN-R-125
  
• UPC: 051712407175
  
• Product Type: Fuse
  
• Class: Class RK1
  
• Amperage Rating: 125 A
  
• Voltage Rating: 250 Vac, 250 Vdc
  
• AC Interrupt Rating: 200 kAIC at 250 Vac
  
• DC Interrupt Rating: 100 kAIC at 250 Vdc
  
• Number of Elements: 1
  
• Fuse Indicator: Non-indicating
  
• Length/Depth: 7.1 in
  
• Height: 1.56 in
  
• Width: 1.56 in
  
• Product Weight: 1.01 lb
  

Material Compliance and Certifications

The supplied manufacturer specifications list compliance as “Not Applicable” for the KTN-R-125. The provided product data includes no additional compliance certifications or approval marks, so we are not inferring any from other KTN-R series products.

Where It Works Best

The Eaton Bussmann KTN-R-125 is a practical replacement candidate when the equipment documentation calls for a 125A, Class RK1 fuse rated at 250 Vac or 250 Vdc and the specified interrupt rating matches the application. The combination of a 200 kAIC rating at 250 Vac and a 100 kAIC rating at 250 Vdc is particularly important to verify rather than selecting a fuse based on amperage alone.