LLNRK010 - 10Amp Fuse

LLNRK010 - 10Amp Fuse

Protecting electrical equipment starts with the right fuse, and the Littelfuse LLNRK010 10 Amp Class RK1 Time-Delay fuse is part of the Littelfuse POWR-PRO LLNRK series. This 10A Slo-Blo fuse combines a 250VAC maximum voltage rating, a 125VDC maximum voltage rating, and time-delay opening characteristics that help accommodate brief startup current surges without unnecessary fuse operation. Whether you're maintaining an electrical distribution system, replacing a specified fuse, or selecting protection for compatible equipment, the LLNRK010 offers a clearly defined combination of amperage, voltage, fuse class, and operating characteristics.

Key Features and Benefits

• 10 Amp Continuous Current Rating: Designed for electrical circuits that require a 10A fuse, providing overcurrent protection when properly matched to the equipment and circuit requirements.
• Class RK1 Protection: Meets the dimensional and performance classification for Class RK1 fuses, making it suitable for applications that specify this fuse class.
• 250VAC Maximum Voltage Rating: Supports compatible AC electrical applications operating at or below the manufacturer's specified voltage limit.
• 125VDC Maximum Voltage Rating: Supports DC circuits requiring the LLNRK010's specific current, voltage, and protection characteristics.
• DC Short-Circuit Protection: Littelfuse publishes a self-certified 20 kA interrupting rating at 125VDC.
• Non-Indicating Design: Uses a traditional non-indicating fuse configuration without a built-in blown-fuse indicator.

Technical Specifications

• Manufacturer: Littelfuse
  
• Catalog Number: LLNRK010
  
• Series: LLNRK
  
• Product Family: POWR-PRO
  
• Product Type: Time-Delay Electrical Fuse
  
• Fuse Classification: Class RK1
  
• Continuous Current Rating: 10 Amps
  
• Maximum AC Voltage: 250VAC
  
• Maximum DC Voltage: 125VDC
  
• Opening Characteristic: Slo-Blo / Time Lag (T) / Time Delay
  
• Standard AC Interrupting Rating: 200,000A (200 kA) RMS symmetrical at 250VAC
  
• Additional AC Interrupting Rating: 300,000A (300 kA) RMS symmetrical at 250VAC, self-certified by Littelfuse
  
• DC Interrupting Rating: 20,000A (20 kA) at 125VDC, self-certified by Littelfuse
  
• Indicating Feature: No — Non-Indicating
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Manufacturer-Referenced Holder Series: LFR25030 Series
  
• Intended Application Categories: Service Entrance, Main Circuits, Feeder Circuits, and General-Purpose Branch Circuits
  

Material Compliance and Certifications

The Littelfuse LLNRK010 is part of the manufacturer's Class RK1 POWR-PRO fuse family. The LLNRK/LLSRK series carries manufacturer-published UL Listed and CSA Certified approvals, with the series documentation identifying UL File E81895 and CSA File LR29862.

Where It Works Best

• Service Entrance
  
• Main Circuits
  
• Feeder Circuits
  
• and General-Purpose Branch Circuits
  

When correctly selected, installed by qualified personnel, and operated within its specified ratings, the LLNRK010 is built to last as part of a properly maintained electrical system.