JLLS100 - 100Amp Fuse

JLLS100 - 100Amp Fuse

When your equipment calls for a 100-amp Class T fuse, the nameplate amperage is only the first thing to check. The Littelfuse JLLS100 combines fast-acting operation, current-limiting performance, 600VAC and 300VDC maximum voltage ratings, and knife-blade-style construction. It's built to last and, more importantly, provides clear specifications to help you determine whether the JLLS100 is the right match for your equipment.

Key Features and Benefits

• 100A continuous current rating: Provides the specified amperage for equipment designed around a 100-amp Class T fuse.
• Class T configuration: Makes fuse-class identification straightforward when checking compatibility.
• Fast-acting (F): The manufacturer identifies JLLS100 with a fast-acting opening characteristic.
• Current-limiting design: JLLS100 is part of Littelfuse's current-limiting fuse family.
• 600VAC maximum rating: Suitable for compatible applications requiring the stated AC voltage capability.
• 300VDC maximum rating: Provides a manufacturer-specified DC voltage rating for appropriate DC applications.
• Knife-Blade/Bolt-In size: Gives you an important physical characteristic to verify against the existing fuse arrangement.
• Non-indicating: Manufacturer data specifies no indicating feature.

Technical Specifications

• Manufacturer: Littelfuse
  
• Catalog Number: JLLS100
  
• Series: JLLS
  
• Manufacturer Description: FUS 600V F/A CLASS T 100A
  
• Continuous Current Rating: 100A
  
• 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
  
• Construction: Knife-blade style
  
• Size: Knife-Blade/Bolt-In
  
• Indicating: No
  
• Mounting Method: Fuse Block / Clip / Holder
  
• PG Holder: LFT60100 Series
  

Material Compliance and Certifications

The supplied manufacturer specifications do not state specific UL, CSA, CE, RoHS, REACH, or other certification or material-compliance information for JLLS100. This should not be interpreted as meaning that the fuse does or does not carry a particular certification. For installations that require a specific approval or compliance standard, check the product markings and current authoritative Littelfuse documentation.

Where It Works Best

The Littelfuse JLLS100 100A Class T fuse is best evaluated for compatible electrical equipment that specifically requires a 100A, fast-acting, current-limiting Class T fuse with knife-blade-style construction. It is particularly relevant when the equipment specification calls for the JLLS100 catalog number, the applicable 600VAC or 300VDC rating, corresponding interrupting capacity, and a Knife-Blade/Bolt-In configuration. The specified LFT60100 Series PG holder offers another useful checkpoint when confirming the existing fuse arrangement.