FLNR040 - 40 Amp Fuse

FLNR040 - 40 Amp Fuse

When you need a 40-amp Class RK5 fuse with time-delay performance, the FLNR040 is designed to provide reliable overcurrent protection without reacting unnecessarily to normal, short-duration current surges. This dual-element industrial cartridge fuse carries a 40A continuous current rating and is rated for applications up to 250 VAC or 125 VDC. Its Slo-Blo/time-delay operation is especially useful in equipment where startup or inrush current is part of normal operation.

Key Features and Benefits

• 40 amp rating for compatible electrical equipment and circuits
• Class RK5, dual-element design combines overcurrent protection with time-delay performance
• Rated for up to 250 VAC and 125 VDC
• Slo-Blo/time-delay opening helps accommodate brief startup and inrush currents
• Familiar industrial cartridge-style construction
• Installs in compatible fuse blocks, clips, and holders
• Non-indicating configuration
• Compatible with the LFR25060 Series holder specified by the manufacturer
  

Technical Specifications

• Catalog Number: FLNR040
  
• Series: FLNR
  
• Fuse Class: Class RK5
  
• Current Rating: 40 A
  
• Maximum AC Voltage: 250 VAC
  
• Maximum DC Voltage: 125 VDC
  
• Fuse Type: Dual Element
  
• Opening: Slo-Blo / Time Lag (T) / Time Delay
  
• Size / Construction: Industrial Cartridge
  
• AC Interrupting Rating: Up to 300 kA
  
• DC Interrupting Rating: 20 kA
  
• Indicating: No
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Compatible Holder: LFR25060 Series
  

Material Compliance and Certifications

The FLNR040 is classified as a Class RK5 fuse. Specific material-compliance declarations and individual agency certifications were not included in the product information provided for this listing, so they should not be assumed. If your project, facility, or application has specific regulatory or material compliance requirements, confirm those requirements against the current documentation for the exact FLNR040 catalog number.

Where It Works Best

The FLNR040 makes sense in industrial and commercial electrical systems that call for a 40A, Class RK5 time-delay fuse. Its time-delay characteristics are particularly helpful in compatible equipment that experiences a temporary increase in current during startup. Rather than selecting a fuse simply because the amperage looks right, check the circuit's complete requirements—including fuse class, voltage, amperage, interrupting rating, and opening characteristics.