FLNR300-ID - 300Amp Fuse

FLNR300-ID - 300Amp Fuse

The FLNR300-ID is a 300-amp Class RK5 time-delay fuse built for your electrical applications where dependable overcurrent protection and the ability to handle temporary current surges are important. Rated for 250VAC and 125VDC, this dual-element fuse uses a knife-blade design and includes an indicating feature that makes it easier to identify an open fuse during inspection or troubleshooting. Its time-delay operation is especially useful on circuits that may experience normal startup or inrush currents, since brief surges don't necessarily call for the circuit to be opened.

Key Features and Benefits

• 300A continuous current rating for applications requiring a 300 amp fuse.
• Class RK5 design with dual-element, time-delay operation.
• Handles temporary startup and inrush currents without unnecessarily opening the circuit.
• The built-in indication helps make an open fuse easier to spot during troubleshooting.
• Rated for electrical systems up to 250VAC or 125VDC.
• Knife-blade construction fits compatible fuse blocks, clips, and holders.
  

Technical Specifications

• Catalog Number: FLNR300-ID / FLNR300ID
  
• Series: FLNR_ID
  
• Fuse Type: Dual-Element Time-Delay Indicating Fuse
  
• Fuse Class: Class RK5
  
• Current Rating: 300A
  
• Maximum AC Voltage: 250VAC
  
• Maximum DC Voltage: 125VDC
  
• Opening Characteristic: Slo-Blo / Time Lag (T) / 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
  
• Specified Holder Family: LFR25400 Series
  

Material Compliance and Certifications

The FLNR300-ID is a Class RK5 fuse. The product information provided does not specify individual material-compliance declarations or a complete list of certifications, so those details shouldn't be assumed.

If your application has specific certification, environmental, material, or electrical-code requirements, confirm that the documentation for the exact FLNR300-ID meets those requirements before installation.

Where It Works Best

The FLNR300-ID makes sense for industrial and commercial electrical systems that require 300A Class RK5 time-delay protection. It's particularly useful where equipment can draw a temporary current surge during startup. Rather than treating every brief increase in current as a fault, its time-delay characteristics are designed to accommodate normal short-duration inrush while still protecting against sustained overcurrent conditions.