FLNR350 - 350 Amp Fuse

FLNR350 - 350 Amp Fuse

When your circuit has to handle normal startup current without sacrificing overcurrent protection, the FLNR350 is built for the job. This 350-amp Class RK5 time-delay fuse uses a dual-element design that allows it to ride through brief, expected current surges while still responding to sustained overloads and fault conditions.

Key Features and Benefits

• 350-amp rating for circuits designed around a 350-A fuse.
• Class RK5 construction for applications requiring this specific fuse class.
• Dual-element time-delay design helps tolerate normal short-term inrush current.
• Rated for applications up to 250VAC and 125VDC.
• Provides an AC interrupting rating of up to 300 kA.
• Knife-blade style works with properly matched fuse blocks, clips, and holders.
• Non-indicating design.
• Time-delay operation can help prevent nuisance openings caused by acceptable momentary startup loads.
  

Technical Specifications

• Catalog Number: FLNR350
  
• Series: FLNR
  
• Current Rating: 350A
  
• Fuse Class: Class RK5
  
• Fuse Style: Dual Element
  
• Opening Type: 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
  
• Size / Connection Style: Knife-Blade
  
• Indicating: No
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Specified Holder: LFR25400 Series
  

Material Compliance and Certifications

The FLNR350 is specified as a Class RK5 fuse. The product information provided for this catalog number does not include a complete listing of agency certifications, environmental declarations, or material-compliance standards. If a project requires specific certification or material-compliance documentation, those requirements should be confirmed against the applicable product documentation before installation.

Where It Works Best

The FLNR350 makes sense in commercial and industrial circuits where equipment can draw more current for a short period during startup. Its time-delay characteristics allow it to handle those normal, temporary surges while maintaining overcurrent protection for the circuit. Applications may include appropriately designed motor circuits, transformers, industrial machinery, and electrical distribution equipment, provided the system requirements match the fuse ratings.