FLNR500-ID - 500Amp Fuse

FLNR500-ID - 500Amp Fuse

When your circuit requires dependable high-current protection without nuisance operation under normal startup conditions, the FLNR500-ID is built for the job. This 500A Class RK5 time-delay fuse uses a dual-element design that allows it to handle appropriate short-duration inrush currents while still providing overcurrent protection for the circuit. It is rated for 250VAC and 125VDC and features knife-blade construction for use with compatible fuse blocks, clips, and holders. One especially useful feature is its indicating design.

Key Features and Benefits

• 500A continuous current rating for high-current electrical applications.
• The Class RK5 dual-element design provides time-delay performance when temporary inrush currents are expected.
• The built-in indication helps maintenance teams quickly identify an open fuse.
• Rated for applications up to 250VAC or 125VDC.
• Knife-blade construction fits compatible fuse blocks, clips, and holders.
  

Technical Specifications

• Catalog Number: FLNR500-ID
  
• Manufacturer Catalog Number: FLNR500ID
  
• Series: FLNR_ID
  
• Fuse Class: Class RK5
  
• Fuse Type: Dual Element
  
• Continuous Current Rating: 500A
  
• Maximum AC Voltage: 250VAC
  
• Maximum DC Voltage: 125VDC
  
• Opening: Slo-Blo / Time Lag / Time Delay
  
• AC Interrupting Rating: Up to 300 kA
  
• DC Interrupting Rating: 20 kA
  
• Construction: Knife-Blade
  
• Indicating: Yes
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Compatible Holder Series: LFR25600 Series
  

Material Compliance and Certifications

The FLNR500-ID is manufactured as a Class RK5 fuse with the electrical and performance characteristics shown above. If your installation requires specific agency certifications, environmental declarations, or material compliance documentation, verify those requirements against the documentation for the exact FLNR500ID catalog number.

When replacing an existing fuse, don't rely on the 500A rating alone. Fuse class, AC or DC voltage, interrupting capacity, time-delay characteristics, physical size, and mounting configuration all matter when determining whether a fuse is appropriate for a particular circuit.

Where It Works Best

The FLNR500-ID makes sense in commercial and industrial electrical systems that require a 500A Class RK5 time-delay fuse and experience normal short-duration inrush current. Depending on the equipment specifications, that can include motor circuits, transformers, industrial machinery, electrical distribution equipment, and other high-current loads.

It can be especially handy in facilities where downtime matters. The indicating feature provides maintenance personnel with a faster visual way to spot an open fuse. At the same time, the time-delay design is intended to tolerate appropriate temporary current surges associated with equipment startup.