LLSRK100ID - 100Amp Fuse

LLSRK100ID - 100Amp Fuse

When your fuse opens, the last thing your maintenance team needs is a long search to figure out which one failed. The Littelfuse LLSRK100ID makes troubleshooting a little easier. This 100-amp Class RK1 time-delay indicating fuse features a built-in indicator window that darkens when the fuse opens, helping technicians spot the problem without checking every fuse individually. Part of the Littelfuse POWR-PRO LLSRK_ID series, it protects industrial electrical circuits from overloads and short circuits while handling the brief current surges that often occur when motors start.

Key Features and Benefits

• 100A Time-Delay Circuit Protection
• Built-In Blown-Fuse Indicator
• Patented Indicator™ Technology
• Class RK1 Current-Limiting Design
• High Interrupting Capacity
• Precision-Formed Short-Circuit Elements
• Solid-State Overload Section
• Reduced Nuisance Fuse Openings
• Knife-Blade Terminals

Technical Specifications

• Manufacturer: Littelfuse
  
• Catalog Number: LLSRK100ID
  
• Series: LLSRK_ID
  
• Product Family: POWR-PRO Fuse
  
• Product Type: Industrial cartridge fuse
  
• Fuse Class: Class RK1
  
• Continuous Current Rating: 100A
  
• Maximum AC Voltage: 600V AC
  
• Maximum DC Voltage: 300V DC
  
• Opening Characteristic: Slo-Blo / Time Lag (T) / Time Delay
  
• Terminal Style: Knife-Blade
  
• Blown-Fuse Indicator: Yes
  
• AC Interrupting Rating: 200,000A at 600V AC
  
• Additional AC Interrupting Rating: 300,000A at 600V AC, subject to applicable manufacturer rating conditions
  
• DC Interrupting Rating: 20,000A at 300V DC
  
• Short-Circuit Elements: Precision-formed
  
• Overload Section: Solid-state design with no moving parts
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Associated Fuse Holder Series: LFR60100 Series
  

Material Compliance and Certifications

The Littelfuse LLSRK100ID is a Class RK1 industrial fuse with manufacturer-specified electrical ratings for overcurrent protection. Its 100A continuous current rating, 600V AC and 300V DC maximum voltage ratings, and published interrupting capacities are important factors when determining suitability for an electrical system.

Where It Works Best

• Industrial Motor Circuits
• Manufacturing Equipment
• Industrial Control Panels
• Commercial Electrical Systems
• Electrical Maintenance and Replacement
• Circuits with Temporary Startup Surges
• Equipment Requiring Visible Fuse Indication
• High Fault-Current Applications