JLLS001 - 1Amp Fuse

JLLS001 - 1Amp Fuse

Small amperage, very specific requirements. The Littelfuse JLLS001 is a 1-amp Class T fuse designed for equipment that requires fast-acting operation, current-limiting characteristics, and industrial cartridge construction. For technicians and equipment owners trying to match your existing fuse accurately, those details matter just as much as the 1A rating printed on the part. Properly selected and used within its stated ratings, this purpose-built electrical component is built to last while providing clear specifications for maintenance and replacement applications.

Key Features and Benefits

• 1A continuous current rating: Provides a precise amperage match for equipment specifically requiring a 1-amp Class T fuse.
• Class T fuse: The manufacturer-defined fuse class provides an important compatibility point when identifying the correct component.
• Fast-acting operation: Littelfuse specifies the JLLS001 as Fast-Acting (F), removing guesswork about its opening characteristic.
• Current-limiting design: Identified by Littelfuse as part of the current-limiting family style.
• 600VAC maximum voltage: Supports compatible equipment requiring a Class T fuse rated for up to 600VAC.
• 300VDC maximum voltage: A separate DC rating makes it easier to check suitability against DC equipment specifications.
• Industrial cartridge construction: The specified physical format provides another key detail to compare with existing fuses and equipment.
• Non-indicating: The JLLS001 does not include an indicating feature.

Technical Specifications

• Manufacturer: Littelfuse
  
• Catalog Number: JLLS001
  
• Series: JLLS
  
• Manufacturer Description: FUS 600V F/A CLASS T 1A
  
• Continuous Current Rating: 1A
  
• Fuse Class: Class T
  
• Opening: Fast-Acting (F)
  
• Family Style: Current Limiting
  
• Maximum AC Voltage: 600VAC
  
• Maximum DC Voltage: 300VDC
  
• AC Interrupting Rating: 200,000A (200 kA) at 600VAC
  
• DC Interrupting Rating: 20,000A (20 kA) at 300VDC
  
• Construction / Size: Industrial Cartridge
  
• Indicating: No
  
• Mounting Method: Fuse Block / Clip / Holder
  
• PG Holder: LFT60030 Series
  

Material Compliance and Certifications

The supplied manufacturer specifications for the JLLS001 included no specific UL, CSA, CE, RoHS, REACH, or other certification or material-compliance information. That does not establish that these certifications or compliance designations are absent. Where a particular approval or material requirement is necessary for the application, confirm it using current authoritative manufacturer documentation and the markings on the actual fuse.

Where It Works Best

The Littelfuse JLLS001 1A Class T fuse is best suited to compatible electrical equipment specifically calling for a 1A, fast-acting, current-limiting Class T fuse with industrial cartridge construction. Its combination of a 600VAC maximum rating, 300VDC maximum rating, and separately stated AC and DC interrupting capacities makes it easy to compare the key selection criteria with the equipment documentation.