FLNR045 - 45 Amp Fuse

FLNR045 - 45 Amp Fuse

When your circuit must handle normal startup surges as well as potentially damaging overcurrent, the FLNR045 45-amp Class RK5 time-delay fuse provides dependable protection without being overly sensitive to brief current spikes. This industrial cartridge fuse is rated for 250 VAC and 125 VDC and uses a dual-element, Slo-Blo/time-delay design. That means it can ride through temporary inrush currents that occur during normal equipment operation while still responding to sustained overloads and short-circuit conditions.

Key Features and Benefits

• 45A continuous current rating for circuits designed around a 45-amp fuse.
• Time-delay operation helps prevent nuisance opening during brief, normal current surges.
• Dual-element construction provides time-delay characteristics along with overcurrent protection.
• Rated for systems up to 250 VAC or 125 VDC.
• High interrupting capacity makes the fuse suitable for applications with significant available fault current.
• Class RK5 design for equipment and circuits requiring this specific fuse class.
• Industrial cartridge style works with compatible fuse blocks, clips, and holders.
• Designed as a non-indicating fuse, keeping the construction simple and practical.
  

Technical Specifications

• Catalog Number: FLNR045
  
• Series: FLNR
  
• Fuse Type: Dual-Element Time-Delay Fuse
  
• Fuse Class: Class RK5
  
• Continuous Current Rating: 45 A
  
• Maximum AC Voltage: 250 VAC
  
• Maximum DC Voltage: 125 VDC
  
• Interrupting Rating: 300 kA AC; 20 kA DC
  
• Opening Characteristic: Slo-Blo / Time Lag (T) / Time Delay
  
• Construction: Industrial Cartridge
  
• Indicating: No
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Specified Holder Series: LFR25060 Series
  

Material Compliance and Certifications

The FLNR045 is a Class RK5 industrial fuse, but the product information provided here does not include specific material compliance declarations or individual certification listings. If your installation has particular regulatory, environmental, or certification requirements, those requirements should be checked against the documentation for the exact FLNR045 catalog number rather than assumed from the fuse class alone.

Where It Works Best

The FLNR045 makes sense in commercial and industrial circuits where short periods of higher current are expected during normal operation. Its time-delay characteristic gives equipment time to clear temporary inrush conditions without sacrificing protection against sustained overcurrent.