JLLN003 - 3Amp Fuse

JLLN003 - 3Amp Fuse

The Littelfuse JLLN003 is a 3-amp Class T fuse with a combination of specifications that makes identification straightforward when you know what your equipment requires. It is rated for a maximum of 300VAC and 160VDC, uses fast-acting (F) operation, and features a current-limiting industrial cartridge design. For technicians and equipment owners replacing an existing JLLN003 or working from an exact equipment specification, these details provide practical checkpoints before installation. It's a focused electrical component, built to last within the application and ratings for which it is specified.

Key Features and Benefits

• 3A continuous current rating — Clearly identifies the amperage required when matching the fuse to existing equipment specifications.
• Fast-acting (F) opening — Provides the operating characteristic specified by Littelfuse for the JLLN003.
• Current-limiting design — An important characteristic to confirm when the application specifically calls for a current-limiting fuse.
• Class T configuration — Another critical compatibility checkpoint beyond amperage alone.
• AC and DC ratings — Rated for a maximum of 300VAC and 160VDC, allowing the appropriate rating to be checked against the application.
• Non-indicating design — The manufacturer specifies no visual indication feature.

Technical Specifications

• Manufacturer: Littelfuse
  
• Catalog Number: JLLN003
  
• Series: JLLN
  
• Product Type: Fuse
  
• Fuse Class: Class T
  
• Continuous Current Rating: 3A
  
• Maximum AC Voltage: 300VAC
  
• Maximum DC Voltage: 160VDC
  
• AC Interrupting Rating: 200,000A (200 kA) at 300VAC
  
• DC Interrupting Rating: 50,000A (50 kA) at 160VDC
  
• Opening Characteristic: Fast-Acting (F)
  
• Family Style: Current Limiting
  
• Size / Construction: Industrial Cartridge
  
• Indicating: No
  
• Mounting Method: Fuse Block / Clip / Holder
  
• PG Holder: LFT30030 Series
  

Material Compliance and Certifications

The manufacturer specifications provided for this exact JLLN003 did not include specific UL, CSA, CE, RoHS, REACH, or other material-compliance or certification information. This should not be interpreted as meaning the product lacks a particular approval. If a certification or material-compliance requirement matters for your application, verify the markings on the fuse and current authoritative manufacturer documentation rather than assuming compliance based on the product family or a similar catalog number.

Where It Works Best

The Littelfuse JLLN003 3A Class T fuse is best suited to compatible electrical equipment specifically calling for its combination of 3A continuous current, fast-acting operation, current-limiting characteristics, industrial cartridge construction, and Class T configuration. Its separate AC and DC ratings also require matching the fuse to the actual circuit: 200 kA at 300VAC for the specified AC rating and 50 kA at 160VDC for the specified DC rating.