LLNRK030 - 30Amp Fuse

LLNRK030 - 30Amp Fuse

A motor starts, a transformer energizes, or equipment cycles on. For a brief moment, the electrical current can rise well above its normal operating level. That's expected behavior in many electrical systems. What matters is having the right fuse in place—one that can accommodate normal startup conditions while still providing the overload and short-circuit protection the circuit requires.

The Littelfuse LLNRK030 30 Amp Class RK1 Time-Delay Fuse is designed for exactly that kind of application. Part of the POWR-PRO LLNRK series, this dual-element, current-limiting fuse carries a 30-amp continuous current rating and has maximum operating voltage ratings of 250VAC and 125VDC. Its time-delay characteristics make it particularly useful in circuits where temporary inrush current is a normal part of your equipment operation.

Key Features and Benefits

• 30 Amp Continuous Current Rating
• 250VAC Maximum Voltage Rating
• 125VDC Maximum Voltage Rating
• Class RK1 Fuse Classification
• Littelfuse POWR-PRO Product Family
• LLNRK Series Design
• Slo-Blo Time-Delay Operation
• Dual-Element Protection
• Spring-Loaded Thermal Overload Element
• Current-Limiting Construction
• Short-Circuit Protection
• Sustained Overload Protection
• Temporary Inrush Current Accommodation
• Reduced Unnecessary Fuse Opening

Technical Specifications

• Catalog Number: LLNRK030
  
• Manufacturer: Littelfuse
  
• Product Type: Current-Limiting Time-Delay Fuse
  
• Product Family: POWR-PRO
  
• Series: LLNRK
  
• Fuse Class: Class RK1
  
• Continuous Current Rating: 30 Amps
  
• Maximum AC Voltage: 250VAC
  
• Maximum DC Voltage: 125VDC
  
• Opening Characteristic: Slo-Blo / Time Lag (T) / Time Delay
  
• Protective Element Design: Dual Element
  
• Thermal Overload Element: Thermally Reversible, Spring-Loaded
  
• AC Interrupting Value 1: 200,000 Amps at 250VAC
  
• AC Interrupting Value 2: 300,000 Amps at 250VAC
  
• DC Interrupting Rating: 20,000 Amps at 125VDC
  
• Current-Limiting: Yes
  
• Indicating: No
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Manufacturer-Identified Holder Series: LFR25030
  

Material Compliance and Certifications

The supplied specifications do not identify the exact body material, terminal material, or product-specific material-compliance declarations for the LLNRK030. Although the fuse is classified as Class RK1, the supplied data does not include individual UL or CSA certification markings or file numbers. Verify any certification required for a particular project using current manufacturer documentation and the markings on the fuse itself.

Where It Works Best

• General-Purpose Electrical Circuits
• Motor Circuits
• Transformer Circuits
• Solenoid Circuits
• Fluorescent Lighting Circuits
• Equipment with High Inrush Current
• Commercial Electrical Distribution
• Industrial Electrical Distribution
• General-Purpose Branch Circuits
• Suitable 250VAC Applications
• Suitable 125VDC Applications
• Existing System Repairs
• Form, Fit, and Functional Fuse Replacement