JLLN045 - 45Amp Fuse

JLLN045 - 45Amp Fuse

When your equipment specifies the Littelfuse JLLN045, confirm a few details before installation—and the 45-amp rating is just one. This Class T industrial cartridge fuse combines a 45A continuous current rating with a fast-acting (F) opening characteristic and current-limiting design. Together, these specifications create a clearly defined fuse that's easier to match to equipment documentation—a practical component built to last when properly selected and operated within its specified ratings.

Key Features and Benefits

• 45A continuous current rating — Provides a clearly defined amperage specification for matching the fuse to compatible electrical equipment.
• Class T fuse — Designed for applications specifically requiring Class T fuse characteristics.
• Fast-acting (F) operation — The specified opening characteristic is an important consideration when matching the JLLN045 to the intended application.
• Current-limiting design — Littelfuse identifies the JLLN045 as part of its current-limiting fuse family.
• Rated up to 300VAC — Suitable for compatible AC equipment operating within the fuse's stated voltage rating.
• Rated up to 160VDC — Provides a separately defined maximum voltage for compatible DC applications.
• Non-indicating construction — Littelfuse specifies the JLLN045 as a non-indicating fuse.

Technical Specifications

• Manufacturer: Littelfuse
  
• Catalog Number: JLLN045
  
• Series: JLLN
  
• Manufacturer Description: FUS 300V F/A CLASS T 45A
  
• Product Type: Fuse
  
• Continuous Current Rating: 45A
  
• Fuse Class: Class T
  
• Opening Characteristic: Fast-Acting (F)
  
• Family Style: Current Limiting
  
• Maximum AC Voltage: 300VAC
  
• AC Interrupting Rating: 200,000A (200 kA) at 300VAC
  
• Maximum DC Voltage: 160VDC
  
• DC Interrupting Rating: 20,000A (20 kA) at 160VDC
  
• Size / Construction: Industrial Cartridge
  
• Indicating: No
  
• Mounting Method: Fuse Block / Clip / Holder
  
• PG Holder: LFT30060 Series
  

Material Compliance and Certifications

The manufacturer specifications supplied for the JLLN045 did not include any specific UL, CSA, CE, RoHS, REACH, or other certification or material-compliance information. That does not establish that the product lacks any particular certification. If your application requires a specific listing, approval, or material-compliance standard, confirm it using the markings and authoritative documentation for the exact JLLN045 catalog number.

Where It Works Best

The Littelfuse JLLN045 45A Class T fuse is a natural fit for compatible existing electrical equipment whose documentation calls for 45A continuous current, fast-acting operation, current-limiting characteristics, and industrial cartridge construction. For AC applications, match the key figures: 300VAC maximum with a 200 kA interrupting rating at 300VAC. For DC applications, verify the separate 160VDC maximum and 20 kA interrupting rating at 160VDC.