LLNRK100 - 100Amp Fuse

LLNRK100 - 100Amp Fuse

Even a low-current electrical circuit needs dependable protection. A brief startup surge shouldn't cause an unnecessary shutdown, but a genuine overload or short circuit needs to be addressed before it damages your connected equipment. The Littelfuse LLNRK.100 1/10 Amp Class RK1 time-delay fuse is designed to balance both. Its spring-loaded, thermally reversible overload element helps reduce nuisance fuse openings, while the current-limiting design helps restrict the energy that reaches connected equipment during a fault. Low-resistance construction also helps minimize power losses during normal operation.

Key Features and Benefits

• 1/10 Amp (0.1A) Continuous Current Rating
• 250V AC / 125V DC Voltage Ratings
• Class RK1 Current-Limiting Protection
• High Short-Circuit Interrupting Capacity
• Dual-Element Time-Delay Design
• Reduced Nuisance Fuse Openings
• Thermally Reversible Overload Element
• Low-Resistance Construction
• Non-Indicating Design

Technical Specifications

• Manufacturer: Littelfuse
  
• Catalog Number: LLNRK.100
  
• Product Series: LLNRK
  
• Product Family: POWR-PRO™
  
• Product Type: Current-Limiting Time-Delay Fuse
  
• Fuse Class: Class RK1
  
• Continuous Current Rating: 0.1 Amps (1/10 Amp)
  
• Maximum AC Voltage: 250V AC
  
• Maximum DC Voltage: 125V DC
  
• AC Interrupting Ratings: 200,000A and 300,000A at 250V AC, as listed in manufacturer specifications
  
• DC Interrupting Rating: 20,000A at 125V DC
  
• Opening Characteristic: Slo-Blo / Time Lag / Time Delay
  
• Element Configuration: Dual-Element
  
• Overload Element: Thermally Reversible, Spring-Loaded
  
• Fuse Indication: Non-Indicating
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Compatible Holder Series: LFR25030
  
• Fuse Block Compatibility: Suitable for Class RK1 fuse blocks and compatible existing Class H fuse blocks
  

Material Compliance and Certifications

The Littelfuse LLNRK.100 belongs to the POWR-PRO Class RK1 fuse family and provides current-limiting overload and short-circuit protection.

• Material Compliance: Current RoHS and REACH status should be confirmed through Littelfuse documentation
• Safety Certifications: Applicable UL, CSA, and other approvals should be verified against current manufacturer records

For installations with specific safety or environmental compliance requirements, consult the latest manufacturer documentation to confirm the certifications and material declarations applicable to this catalog number.

Where It Works Best

• Low-Current Electrical Circuits
• Appropriately Rated Control Circuits
• Small Transformer Circuits
• Low-Current Solenoids
• General-Purpose Branch Circuits
• Electrical Distribution Equipment
• High-Inrush Loads Within the Fuse Rating
• Compatible Class H Fuse System Upgrades