FRS-R-350 - 350Amp Fuse

FRS-R-350 - 350Amp Fuse

When you're matching an FRS-R-350 fuse, the 350-amp rating is only part of the picture. This model uses blade connections at both ends and is non-indicating, so there is no built-in fuse-status indicator. Physical fit also deserves attention: the FRS-R-350 measures 11.63 inches long, 2.59 inches high, and 2.59 inches wide. If you already have FRS-R-350 listed in your equipment documentation or on the fuse being replaced, that's a useful starting point. From there, compare the complete electrical and physical specifications—including fuse class, voltage, interrupt rating, blade configuration, and dimensions—to confirm that the replacement matches the equipment requirements.

Key Features and Benefits

• 350A Class RK5 rating: Clearly identifies the amperage and fuse class for comparison with equipment specifications.
• 600 VAC and 300 VDC ratings: Provide defined ratings for both AC and DC applications when equipment requirements match.
• Dual-element design: Matches the manufacturer's stated configuration for the FRS-R-350.
• Defined response specification: Rated at 10 seconds at 500% of rated current.
• Blade-end-to-blade-end connection: Makes it easy to verify the connection style against the existing fuse and equipment.
• Non-indicating construction: Designed without a built-in fuse status indicator.
• CE Marked: CE marking is included in the supplied manufacturer specifications.
  

Technical Specifications

• Product Name: Eaton Bussmann series FRS-R fuse
  
• Catalog Number: FRS-R-350
  
• UPC: 051712508520
  
• Product Type: Fuse
  
• Class: Class RK5
  
• Amperage Rating: 350 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: Blade end x blade end
  
• Fuse Indicator: Non-indicating
  
• Product Length/Depth: 11.63 in
  
• Product Height: 2.59 in
  
• Product Width: 2.59 in
  
• Product Weight: 0.00052 lb
  

Material Compliance and Certifications

The FRS-R-350 is CE-marked according to the supplied manufacturer information. No additional certifications or material compliance declarations were included in the provided specifications, so none are claimed here.

Where It Works Best

The FRS-R-350 350A fuse is appropriate for compatible electrical equipment that specifically requires a Class RK5 dual-element fuse with matching 600 VAC or 300 VDC ratings and a blade-end connection on both sides. Its clearly stated amperage, voltage, interrupt ratings, connection style, and dimensions provide several concrete checkpoints for maintenance teams and electricians comparing a replacement against equipment documentation.