FRS-R-4 - 4Amp Fuse

FRS-R-4 - 4Amp Fuse

A replacement fuse has to match more than just the amp number on the label. The FRS-R-4 has ferrule connections on both ends and measures 5 inches long by 0.81 inches high by 0.81 inches wide. It is also a non-indicating fuse, meaning there is no built-in status indicator. Whether you're replacing an existing FRS-R-4 or checking a fuse against equipment documentation, look at the entire specification—not just the 4-amp rating. Fuse class, voltage, interrupt rating, connection style, and dimensions all help determine whether you've found the appropriate match.

Key Features and Benefits

• 4A Class RK5 fuse: Provides a clearly defined amperage and fuse-class combination for matching against equipment specifications.
• 600 VAC rating: Rated for 600-volt AC applications where the equipment requirements correspond to the fuse specifications.
• 300 VDC rating: Also carries a defined 300-volt DC rating for compatible DC equipment.
• Dual-element construction: Matches the manufacturer's specified element configuration for the FRS-R-4.
• Specified response time: Rated at 10 seconds at 500% of rated current.
• Ferrule end x ferrule end connection: Makes the physical connection style straightforward to compare with the fuse being replaced.
• Non-indicating design: This model lacks a built-in fuse-status indicator.
• CE Marked: CE marking is identified in the supplied manufacturer specifications.
  

Technical Specifications

• Product Name: Eaton Bussmann series FRS-R fuse
  
• Catalog Number: FRS-R-4
  
• UPC: 051712508209
  
• Product Type: Fuse
  
• Class: Class RK5
  
• Amperage Rating: 4 A
  
• AC Voltage Rating: 600 VAC
  
• DC Voltage Rating: 300 VDC
  
• AC Interrupt Rating: 200 kAIC at 600 VAC
  
• DC Interrupt Rating: 20 kAIC at 300 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 in
  
• Product Height: 0.81 in
  
• Product Width: 0.81 in
  
• Product Weight: 0.13 lb
  

Material Compliance and Certifications

The Eaton Bussmann FRS-R-4 is CE-marked according to the manufacturer information supplied for this product. No other certifications or material compliance declarations were provided, so no additional compliance claims are made here.

Where It Works Best

The FRS-R-4 4A fuse is intended for compatible electrical equipment requiring a 4A Class RK5 dual-element fuse with ferrule connections and electrical ratings matching this model. Its combination of 600 VAC / 300 VDC voltage ratings, published AC and DC interrupt ratings, and clearly specified dimensions makes it easier to compare the fuse with an existing component or the equipment documentation.