FRS-R-50 - 50Amp Fuse

FRS-R-50 - 50Amp Fuse

Replacing an FRS-R-50 fuse? The 50-amp rating is an obvious place to start, but it isn't the only specification worth checking. The Eaton Bussmann FRS-R-50 is a 50A, dual-element Class RK5 fuse rated for 600 VAC and 250 VDC. Its published interrupt ratings are 200 kAIC at 600 VAC and 20 kAIC at 250 VDC, with a manufacturer-specified response time of 10 seconds at 500% of rated current. It uses ferrule connections on both ends and has a non-indicating design, so there's no built-in fuse-status indicator. Size matters when you're matching a replacement, too: the FRS-R-50 measures 5.5 x 1.84 x 1.84 inches and weighs 0.3 lb. If this catalog number appears on the fuse you're replacing or in the equipment documentation, compare these electrical and physical details before making the match.

Key Features and Benefits

• 50A Class RK5 rating: Gives you a specific amperage and fuse class to compare with the equipment requirements.
• 600 VAC / 250 VDC: Clearly defined AC and DC voltage ratings simplify specification checks.
• Dual-element design: Matches equipment specifications requiring this element configuration.
• Specified response time: Listed at 10 seconds at 500% of rated current.
• Ferrule ends: Uses a ferrule end x ferrule end connection.
• Non-indicating: No built-in fuse-status indicator.
• Known dimensions: Measures 5.5 inches long, 1.84 inches high, and 1.84 inches wide.
• CE Marked: CE marking is included in the supplied manufacturer compliance information.
  

Technical Specifications

• Product Name: Eaton Bussmann series FRS-R fuse
  
• Catalog Number: FRS-R-50
  
• UPC: 051712508384
  
• Product Type: Fuse
  
• Class: Class RK5
  
• Amperage Rating: 50 A
  
• AC Voltage Rating: 600 VAC
  
• DC Voltage Rating: 250 VDC
  
• AC Interrupt Rating: 200 kAIC at 600 VAC
  
• DC Interrupt Rating: 20 kAIC at 250 VDC
  
• Response Time: 10 sec at 500%
  
• Number of Elements: Dual
  
• Connection: Ferrule end x ferrule end
  
• Fuse Indicator: Non-indicating
  
• Product Length/Depth: 5.5 in
  
• Product Height: 1.84 in
  
• Product Width: 1.84 in
  
• Product Weight: 0.3 lb
  

Material Compliance and Certifications

The FRS-R-50 is CE-marked in accordance with the supplied manufacturer specifications. No additional certifications or material-compliance declarations were provided for this catalog number, so none are assumed here.

Where It Works Best

The FRS-R-50 makes sense for compatible electrical equipment that specifically requires a 50A Class RK5 dual-element fuse with ferrule connections on both ends and electrical ratings matching this model.