JLLS020 - 20Amp Fuse

JLLS020 - 20Amp Fuse

The Littelfuse JLLS020 gives you a well-defined specification set when the application calls for a 20-amp Class T fuse. Rather than relying on appearance alone, you can match the details that matter: 20A continuous current, fast-acting operation, current-limiting characteristics, industrial cartridge construction, and separate AC and DC ratings. For maintenance or replacement work where the equipment specifications call for this exact combination of characteristics, the JLLS020 is a clearly identifiable component built to last when correctly selected and operated within its stated ratings.

Key Features and Benefits

• 20A continuous current rating: Clearly identifies the amperage for equipment requiring a 20-amp fuse.
• Class T fuse: Provides a specific fuse-class designation that can be checked directly against equipment requirements.
• Fast-acting opening: Littelfuse specifies the JLLS020 as Fast-Acting (F), making the opening characteristic an easy compatibility checkpoint.
• Current-limiting characteristics: Adds another important specification to verify when matching the fuse to the intended equipment.
• 600VAC maximum voltage: Rated for compatible AC applications up to the manufacturer's specified maximum.
• 300VDC maximum voltage: Also carries a defined DC voltage rating for compatible DC equipment.
• Industrial cartridge construction: Provides a defined physical format for compatibility checking.
• Non-indicating design: The JLLS020 does not incorporate an indicating feature.

Technical Specifications

• Manufacturer: Littelfuse
  
• Catalog Number: JLLS020
  
• Series: JLLS
  
• Manufacturer Description: FUS 600V F/A CLASS T 20A
  
• Continuous Current Rating: 20A
  
• Fuse Class: Class T
  
• Opening Characteristic: 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
  
• Size / Construction: Industrial Cartridge
  
• Indicating: No
  
• Mounting Method: Fuse Block / Clip / Holder
  
• PG Holder: LFT60030 Series
  

Material Compliance and Certifications

The supplied manufacturer specifications for the JLLS020 did not include any specific UL, CSA, CE, RoHS, REACH, or other certification or material-compliance information. That does not establish whether the product has any particular certification. If your application requires an approval or material-compliance standard, confirm the applicable product markings and current authoritative manufacturer documentation.

Where It Works Best

The Littelfuse JLLS020 20A Class T fuse suits compatible electrical equipment that requires a 20A, fast-acting, current-limiting industrial cartridge fuse with the applicable 600VAC or 300VDC rating. Its clearly stated current, voltage, interrupting, fuse-class, construction, and mounting specifications make it particularly useful for maintenance and replacement situations where technicians need to match an existing fuse to documented equipment requirements.