FLNR250 - 250 Amp Fuse

FLNR250 - 250 Amp Fuse

The FLNR250 is a 250-amp Class RK5 time-delay fuse designed for commercial and industrial electrical applications where dependable overcurrent protection is essential. Instead of reacting immediately to transient conditions, the FLNR250 is designed to provide the Slo-Blo/time-lag performance expected of this type of fuse while still protecting the circuit from damaging overcurrent. If your equipment calls for a 250A Class RK5 dual-element fuse, the FLNR250 brings together the current rating, voltage capability, time-delay operation, and physical configuration needed for a wide range of compatible applications.

Key Features and Benefits

• 250A continuous current rating for compatible commercial and industrial circuits.
• Class RK5, dual-element design provides time-delay overcurrent protection.
• Slo-Blo/time-delay operation accommodates appropriate temporary startup and inrush currents.
• Rated for applications up to 250VAC or 125VDC.
• Knife-blade construction fits compatible fuse blocks, clips, and holders.
• Designed for use with the LFR25400 Series holder family when properly matched to the application.
  

Technical Specifications

• Catalog Number: FLNR250
  
• Series: FLNR
  
• Current Rating: 250A
  
• Fuse Class: Class RK5
  
• Fuse Style: Dual Element
  
• Maximum AC Voltage: 250VAC
  
• Maximum DC Voltage: 125VDC
  
• Opening Type: Slo-Blo / Time Lag / Time Delay
  
• AC Interrupting Rating: Up to 300 kA
  
• DC Interrupting Rating: 20 kA
  
• Construction: Knife-Blade
  
• Indicating: No
  
• Mounting: Fuse Block / Clip / Holder
  
• Holder Family: LFR25400 Series
  

Material Compliance and Certifications

The FLNR250 is a Class RK5 fuse. For installations that require specific certifications, environmental documentation, or material-compliance declarations, check the current documentation applicable to the product and installation.

Where It Works Best

The FLNR250 makes sense for commercial and industrial electrical systems that require a 250A Class RK5 time-delay fuse. The time-delay characteristic is particularly useful in compatible circuits where normal startup conditions can briefly push current above typical operating levels.

That can make it a good fit for properly specified applications involving motors, transformers, machinery, and other loads with startup or inrush current. Its high AC interrupting capability is another important advantage in systems where available fault current is a concern.