JLLS125 - 125Amp Fuse

JLLS125 - 125Amp Fuse

The Littelfuse JLLS125 gives you the precise specifications you need when your equipment requires a 125-amp Class T fuse. Instead of stopping at the amp rating, you can confirm the characteristics that really determine compatibility: fast-acting operation, current-limiting design, 600VAC and 300VDC maximum voltage ratings, and Knife-Blade/Bolt-In construction. For compatible equipment, the specified PG holder is the LFT60200 Series.

Key Features and Benefits

• 125A continuous current rating: Clearly identifies the fuse for equipment requiring a 125-amp rating.
• Class T configuration: Gives you an essential specification to verify when matching the JLLS125 to existing equipment.
• Fast-Acting (F): Littelfuse specifies a fast-acting opening characteristic.
• Current limiting: Identified by the manufacturer as part of the current-limiting fuse family.
• Knife-blade construction: The manufacturer identifies the JLLS125 as having knife-blade-style construction.
• Knife-Blade/Bolt-In size: Adds another useful physical checkpoint when confirming fit.
• Non-indicating design: The fuse has no indicating feature.

Technical Specifications

• Manufacturer: Littelfuse
  
• Catalog Number: JLLS125
  
• Series: JLLS
  
• Manufacturer Description: FUS 600V F/A CLASS T 125A
  
• Continuous Current Rating: 125A
  
• 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: Knife-blade style
  
• Size: Knife-Blade/Bolt-In
  
• Indicating: No
  
• Mounting Method: Fuse Block / Clip / Holder
  
• PG Holder: LFT60200 Series
  

Material Compliance and Certifications

The supplied manufacturer information does not specify UL, CSA, CE, RoHS, REACH, or other certification or material-compliance details for the JLLS125. This should not be interpreted as meaning the fuse lacks a particular certification or compliance status.

Where It Works Best

The Littelfuse JLLS125 125A Class T fuse is a strong fit for compatible electrical equipment specifically requiring a 125A, fast-acting, current-limiting Class T fuse with knife-blade-style construction. It is particularly straightforward to identify when the equipment also requires the Knife-Blade/Bolt-In format, a maximum rating of 600VAC or 300VDC, and the applicable interrupting capacity.