FRN-R-50 - 50Amp Fuse

FRN-R-50 - 50Amp Fuse

The FRN-R-50 is a 50-amp Class RK5 dual-element fuse with a 3-inch body and ferrule connections at both ends. Eaton specifies a 10-second response at 500% of rated current, and this particular FRN-R configuration is non-indicating. At 3 inches long and 0.81 inches high by 0.81 inches wide, its dimensions are easy to compare with the fuse holder or equipment documentation. Put those details together—50A, Class RK5, dual element, ferrule ends, voltage ratings, response characteristic, and physical size—and you have a much more useful picture of the FRN-R-50 than the catalog number alone can provide.

Key Features and Benefits

• 50A, Class RK5. Dual-element construction with a non-indicating configuration.
• Rated 250V AC and 125V DC, covering the manufacturer-published voltage specifications for this catalog number.
• Response: 10 seconds at 500% of rated current, as specified by the manufacturer.
• Ferrule end × ferrule end, with a body measuring 3 × 0.81 × 0.81 inches. Those dimensions are particularly handy when confirming physical fit.
  

Technical Specifications

• Product Name: Eaton Bussmann Series FRN-R Fuse
  
• Catalog Number: FRN-R-50
  
• Product Type: Fuse
  
• Amperage Rating: 50A
  
• Class: Class RK5
  
• Voltage Rating: 250V AC / 125V DC
  
• Interrupting Rating at 250V AC: 200 kAIC
  
• Interrupting Rating at 125V DC: 20 kAIC
  
• Response Time: 10 seconds at 500% of rated current
  
• Number of Elements: Dual
  
• Connection: Ferrule end × ferrule end
  
• Fuse Indicator: Non-indicating
  
• Length / Depth: 3 in
  
• Height: 0.81 in
  
• Width: 0.81 in
  
• Product Weight: 3.1 lb
  
• Packaging Type: Standard
  
• UPC: 051712101806
  

Material Compliance and Certifications

The manufacturer information supplied for the FRN-R-50 indicates that it is CE-marked. No additional catalog-specific certifications or material-compliance designations were included in the provided specifications, so any additional approvals should be confirmed separately when required for a particular installation or project.

Where It Works Best

• Equipment calling for an FRN-R-50, with complete electrical and physical specifications verified.
• 50A Class RK5 fuse holders that accept ferrule-ended fuses measuring 3 × 0.81 × 0.81 inches.
• 250V AC circuits where the published 200 kAIC at 250V AC interrupting rating satisfies the circuit requirements.
• Installations specifying a dual-element, non-indicating fuse with the manufacturer's stated 10-second response at 500%.