FRN-R-350 - 350Amp Fuse

FRN-R-350 - 350Amp Fuse

Working with a 350-amp fuse leaves little room for guesswork, and the FRN-R-350 provides specific ratings to verify before it goes into service. Eaton also lists finger safe as a special feature. Put those details together, and you have the information electricians and maintenance teams actually need when checking an FRN-R-350 against the fuse holder, circuit requirements, and equipment documentation.

Key Features and Benefits

• 350A, Class RK5 – The core electrical and class specifications for the FRN-R-350.
• Dual-element construction – Part of the specified design of this fuse.
• Rated for 250V AC and 125V DC, giving you published ratings for both AC and DC use.
• 10-second response at 500% – Eaton provides a specific response-time figure rather than leaving that characteristic undefined.
• Blade ends on both sides – Check the existing fuse holder for the correct connection style and physical fit.
• Non-indicating configuration – No fuse indicator is specified on this model.
• Finger safe – Listed by Eaton as a special feature of the FRN-R-350.
  

Technical Specifications

• Catalog Number: FRN-R-350
  
• Product Name: Eaton Bussmann Series FRN-R Fuse
  
• Product Type: Fuse
  
• Series: FRN-R
  
• Amperage Rating: 350A
  
• Fuse 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
  
• Elements: Dual
  
• Connection: Blade end × blade end
  
• Fuse Indicator: Non-indicating
  
• Special Feature: Finger safe
  
• Length / Depth: 8.63 in
  
• Height: 2.38 in
  
• Width: 2.38 in
  
• Weight: 1.95 lb
  
• Packaging Type: Standard
  
• UPC: 051712507523
  

Material Compliance and Certifications

The manufacturer specifications supplied for the FRN-R-350 list the fuse as CE-marked. No additional catalog-specific certifications or material-compliance declarations were included in the information provided.

Where It Works Best

• Equipment documentation that specifically specifies an FRN-R-350 fuse
• 350A Class RK5 fuse positions with the correct holder
• Fuse holders that accept its blade-to-blade connection
• Installations that accommodate the 8.63 × 2.38 × 2.38-inch physical dimensions
• Specifications calling for dual-element, non-indicating construction
• Situations where the specified 10-second response at 500% agrees with the required fuse characteristics