FLNR050 - 50 Amp Fuse

FLNR050 - 50 Amp Fuse

The FLNR050 is made for your electrical applications that need a 50 amp Class RK5 fuse but also have to contend with brief startup surges. Its dual-element, time-delay design gives the circuit some breathing room during normal inrush conditions, rather than opening at every short-lived current spike. At the same time, it provides the overcurrent protection expected from an industrial cartridge fuse. The FLNR050 is rated for 250 VAC and 125 VDC, with interrupting ratings of 300 kA AC and 20 kA DC.

Key Features and Benefits

• 50 amp rating for equipment and circuits designed around a 50A fuse
• Time-delay action allows brief, normal inrush currents without unnecessary fuse operation
• Dual-element construction provides the operating characteristics needed for time-delay applications
• Rated for up to 250 VAC and 125 VDC
• 20 kA DC interrupting rating for compatible DC circuits
• Class RK5 design for equipment specifically requiring this fuse classification
• Industrial cartridge construction works with compatible fuse blocks, clips, and holders
• Non-indicating configuration
• Specified for use with the LFR25060 Series holder
  

Technical Specifications

• Catalog Number: FLNR050
  
• Series: FLNR
  
• Current Rating: 50 A
  
• Fuse Class: Class RK5
  
• Family Style: Dual Element Fuse
  
• Maximum AC Voltage: 250 VAC
  
• Maximum DC Voltage: 125 VDC
  
• Interrupting Rating: 300 kA AC; 20 kA DC
  
• Opening Characteristic: Slo-Blo / Time Lag (T) / Time Delay
  
• Construction: Industrial Cartridge
  
• Indicating: No
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Compatible Holder: LFR25060 Series
  

Material Compliance and Certifications

Specific material-compliance declarations and certification listings were not included in the supplied information for the FLNR050. If a particular installation requires documented regulatory approvals or material compliance standards, those requirements should be verified against the documentation for this exact catalog number.

Where It Works Best

The FLNR050 is a practical fit for commercial and industrial electrical systems where equipment can pull extra current for a short time during startup. That's where the time-delay characteristic earns its keep.

It's especially relevant when maintaining machinery, motors, or other compatible equipment that requires a 50-amp, 250V Class RK5 time-delay fuse. And when you're replacing an existing fuse, the 50A rating is only part of the story. Check the voltage, fuse class, interrupting capacity, time-delay characteristic, mounting arrangement, and AC/DC requirements as well.