FLNR450-ID - 450Amp Fuse

FLNR450-ID - 450Amp Fuse

When your circuit must handle heavy startup current without sacrificing reliable overcurrent protection, the FLNR450-ID is built for the job. This 450A Class RK5 time-delay fuse uses a dual-element design that allows it to ride through normal, short-duration inrush currents while still protecting against sustained overloads and short circuits. It is rated for 250VAC and 125VDC and features knife-blade construction for use with compatible fuse blocks, clips, and holders.

Key Features and Benefits

• 450-amp rating for circuits designed around a 450A Class RK5 fuse.
• Dual-element time-delay operation helps accommodate normal motor and equipment startup current.
• Indicating design makes it easier to identify an open fuse during inspection or troubleshooting.
• Rated for applications up to 250VAC or 125VDC.
• Class RK5 construction provides current-limiting overcurrent protection when correctly applied.
• Knife-blade design fits compatible fuse blocks, clips, and holders.
  

Technical Specifications

• Catalog Number: FLNR450-ID
  
• Manufacturer Catalog Number: FLNR450ID
  
• Series: FLNR_ID
  
• Fuse Class: Class RK5
  
• Current Rating: 450A
  
• Maximum AC Voltage: 250VAC
  
• Maximum DC Voltage: 125VDC
  
• Opening Type: Slo-Blo / Time Lag / Time Delay
  
• Fuse Design: Dual Element
  
• AC Interrupting Rating: Up to 300 kA
  
• DC Interrupting Rating: 20 kA
  
• Indicating: Yes
  
• Construction: Knife-Blade
  
• Mounting: Fuse Block / Clip / Holder
  
• Holder Series: LFR25600 Series
  

Material Compliance and Certifications

The FLNR450-ID is part of the FLNR_ID Class RK5 fuse family. When a project calls for specific certifications, environmental requirements, or material compliance documentation, those requirements should be checked against the current documentation for this exact catalog number.

Where It Works Best

The FLNR450-ID makes the most sense in electrical systems where brief periods of high current are expected during normal operation. Motor circuits, transformers, industrial machinery, manufacturing equipment, and electrical distribution systems are common applications in which a properly selected time-delay fuse may be required.

That's where the dual-element design earns its keep. Equipment such as motors can pull considerably more current during startup than during normal operation. A time-delay fuse is designed to tolerate appropriate temporary inrush rather than opening simply when equipment starts.