LLSRK003ID - 3Amp Fuse

LLSRK003ID - 3Amp Fuse

A blown fuse shouldn't turn into a lengthy troubleshooting session. When your electrical equipment stops working, identifying the problem quickly can make all the difference. The Littelfuse LLSRK003ID makes that job easier while delivering dependable overcurrent protection for properly rated industrial and commercial electrical circuits.

Part of the advanced Littelfuse POWR-PRO LLSRK_ID series, this 3 Amp, 600V Class RK1 time-delay fuse combines current-limiting protection with patented Indicator technology. Its built-in visual indicator window darkens when the fuse opens, allowing maintenance personnel to identify the affected fuse more easily. That means less time spent checking individual fuses and a more straightforward path toward restoring equipment operation.

The fuse features an industrial cartridge design and installs in compatible fuse blocks, clips, or holders, including the specified LFR60030 holder series.

Key Features and Benefits

• 3 Amp Continuous Current Rating
• 600V AC Maximum Voltage Rating
• 300V DC Maximum Voltage Rating
• Class RK1 Current-Limiting Protection
• Built-In Blown-Fuse Indicator
• Darkening Visual Indicator Window
• Solid-State Overload Section
• No Moving Overload Components
• Precision-Formed Short-Circuit Elements
• Time-Delay Operation
• Reduced Nuisance Fuse Openings
• Faster Fault Identification
• Industrial Cartridge Construction
• Simplified Electrical Maintenance

Technical Specifications

• Manufacturer: Littelfuse
  
• Catalog Number: LLSRK003ID
  
• Product Series: LLSRK_ID
  
• Product Family: POWR-PRO
  
• Product Type: Indicating, Current-Limiting Time-Delay Fuse
  
• Fuse Classification: Class RK1
  
• Continuous Current Rating: 3 Amps
  
• Maximum AC Voltage: 600V AC
  
• Maximum DC Voltage: 300V DC
  
• AC Interrupting Ratings: 200,000A and 300,000A at 600V AC, as listed by Littelfuse
  
• DC Interrupting Rating: 20,000A at 300V DC
  
• Opening Characteristic: Slo-Blo / Time Lag (T) / Time Delay
  
• Current-Limiting: Yes
  
• Indicating: Yes
  
• Indicator Type: Visual Window That Darkens When the Fuse Opens
  
• Overload Section: Solid-State, No Moving Parts
  
• Short-Circuit Elements: Precision-Formed
  
• Fuse Size / Style: Industrial Cartridge
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Specified Holder Series: LFR60030
  

Material Compliance and Certifications

The manufacturer identifies the Littelfuse LLSRK003ID as a Class RK1, current-limiting, time-delay indicating fuse within the POWR-PRO LLSRK_ID series.

The supplied product specifications do not establish individual certification numbers or environmental compliance declarations. For projects requiring documented approvals, confirm the applicable certifications and material compliance status with the manufacturer's current records.

Where It Works Best

• Industrial Electrical Circuits
• Commercial Electrical Equipment
• Circuits Requiring 3A Overcurrent Protection
• Electrical Control Circuits
• Equipment with Temporary Startup Surges
• Fuse Panels Requiring Visual Fault Identification
• Maintenance-Intensive Electrical Systems
• Compatible Class RK1 Fuse Blocks
• Circuits Requiring High Interrupting Capacity
• AC and DC Applications Within Rated Limits