FLNR350-ID - 350Amp Fuse

FLNR350-ID - 350Amp Fuse

When your circuit needs 350-amp protection without unnecessary fuse operation during normal startup conditions, the FLNR350-ID is built for the job. This Class RK5 dual-element fuse uses a time-delay design that allows it to handle brief, expected inrush currents while still providing overcurrent protection during a fault. It is rated for 250VAC and 125VDC and features knife-blade construction for use with compatible fuse blocks, clips, and holders. One particularly useful feature is its built-in indication.

Key Features and Benefits

• 350A current rating for compatible high-current electrical applications.
• Dual-element, time-delay design helps accommodate normal temporary inrush currents.
• Class RK5 construction for systems designed around this fuse class.
• The built-in indication makes an open fuse easier to identify during inspection and troubleshooting.
• Rated for applications up to 250VAC or 125VDC.
• Knife-blade configuration fits compatible fuse blocks, clips, and holders.
• Time-delay operation can help avoid unwanted fuse openings caused by short-duration startup currents.
  

Technical Specifications

• Catalog Number: FLNR350-ID / FLNR350ID
  
• Series: FLNR_ID
  
• Current Rating: 350A
  
• Fuse Class: Class RK5
  
• Fuse Type: Dual Element
  
• Opening: Slo-Blo / Time Lag / Time Delay
  
• Maximum AC Voltage: 250VAC
  
• Maximum DC Voltage: 125VDC
  
• AC Interrupting Rating: Up to 300 kA
  
• DC Interrupting Rating: 20 kA
  
• Indicating: Yes
  
• Construction: Knife-Blade
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Specified Holder: LFR25400 Series
  

Material Compliance and Certifications

The FLNR350-ID belongs to the FLNR_ID Class RK5 fuse family. Applicable certification and compliance requirements should always be checked against the current product documentation for the specific installation. This is especially important when a project, facility, or local electrical code requires specific agency approvals or material compliance documentation.

Where It Works Best

The FLNR350-ID 350A fuse makes the most sense in commercial and industrial circuits where temporary inrush current is part of normal equipment operation. That can include appropriately designed motor circuits, transformers, machinery, control equipment, and electrical distribution systems requiring Class RK5 protection.

Its time-delay characteristics are especially helpful in applications where equipment draws a short burst of additional current during startup. Instead of reacting immediately to that expected condition, the fuse is designed to tolerate temporary inrush while remaining ready to respond to an actual overcurrent condition.