FRN-R-250 - 250Amp Fuse

FRN-R-250 - 250Amp Fuse

At 250 amps, the FRN-R-250 falls within a higher-current range, and its specifications warrant a careful review before installation. The manufacturer specifies a 10-second response time at 500% of rated current, while blade connections on both ends distinguish its physical connection style. It is also a non-indicating fuse. For maintenance crews, electricians, and technicians identifying an FRN-R-250, these details give you the information that matters for checking the fuse against equipment and circuit requirements—without burying the useful specifications under marketing language.

Key Features and Benefits

• 250A Class RK5 rating – Provides the specific current rating and fuse classification associated with the FRN-R-250.
• Dual-element construction – Matches specifications that require a dual-element fuse configuration.
• 250V AC / 125V DC – Published voltage ratings cover compatible AC and DC circuits within the stated limits.
• 10 seconds at 500% response time – Gives technicians a manufacturer-specified response characteristic to consider when confirming the correct fuse.
• Blade end × blade end connection – The blade configuration is an important physical detail when checking compatibility with the intended installation.
• Non-indicating configuration – Appropriate when the specified FRN-R-250 configuration is non-indicating.
  

Technical Specifications

• Catalog Number: FRN-R-250
  
• Product Name: Eaton Bussmann Series FRN-R Fuse
  
• Product Type: Fuse
  
• Series: FRN-R
  
• Fuse Class: Class RK5
  
• Amperage Rating: 250A
  
• AC Voltage Rating: 250V AC
  
• DC Voltage Rating: 125V DC
  
• AC Interrupting Rating: 200 kAIC at 250V AC
  
• DC Interrupting Rating: 20 kAIC at 125V DC
  
• Response Time: 10 seconds at 500% of rated current
  
• Number of Elements: Dual
  
• Connection: Blade end × blade end
  
• Fuse Indicator: Non-indicating
  
• Length / Depth: 0.5 in
  
• Height: 1 in
  
• Width: 1 in
  
• Product Weight: 0.896 lb
  
• Packaging Type: Standard
  
• UPC: 051712507509
  

Material Compliance and Certifications

The supplied specifications identify the FRN-R-250 as CE-marked. No additional catalog-specific certifications or material-compliance declarations were included in the provided manufacturer data.

Where It Works Best

• FRN-R-250 replacement requirements where the equipment documentation specifies this catalog number and the published electrical and physical characteristics match
• 250A Class RK5 fuse applications requiring the stated fuse class and amperage
• 250V AC circuits where a 200 kAIC at 250V AC interrupting rating meets the circuit requirements
• Dual-element fuse requirements calling for the FRN-R-250's stated construction and response characteristic
• Blade-style installations requiring blade connections at both ends
• Non-indicating fuse configurations where an indicating version is not specified