JLLN050 - 50Amp Fuse

JLLN050 - 50Amp Fuse

The Littelfuse JLLN050 gives maintenance teams, electricians, and equipment owners clear ratings to check when your application requires a 50-amp Class T fuse. This industrial cartridge fuse features a fast-acting (F) opening characteristic and current-limiting design, with voltage ratings up to 300VAC and 160VDC. For anyone replacing an existing fuse, these concrete specifications make it easier to compare the component against the equipment documentation instead of relying on appearance alone. It's a straightforward electrical component built to last when properly selected and operated within its specified ratings.

Key Features and Benefits

• 50A continuous current rating — Clearly identifies the amperage for applications specifically requiring a 50-amp fuse.
• Class T configuration — Provides an important compatibility checkpoint when matching the fuse to existing electrical equipment.
• Fast-acting (F) opening — Littelfuse specifies a fast-acting operating characteristic for the JLLN050.
• Current-limiting design — The JLLN050 is identified as part of Littelfuse's current-limiting fuse family.
• 300VAC maximum rating — Designed for compatible AC applications operating within the stated voltage limit.
• 160VDC maximum rating — The fuse also carries a separately specified DC voltage rating for compatible DC applications.
• Non-indicating design — Manufacturer data identifies the JLLN050 as a non-indicating fuse.

Technical Specifications

• Manufacturer: Littelfuse
  
• Catalog Number: JLLN050
  
• Series: JLLN
  
• Manufacturer Description: FUS 300V F/A CLASS T 50A
  
• Product Type: Industrial Cartridge Fuse
  
• Continuous Current Rating: 50A
  
• 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
  
• Indicating: No
  
• Mounting Method: Fuse Block / Clip / Holder
  
• PG Holder: LFT30060 Series
  

Material Compliance and Certifications

The supplied manufacturer specifications do not state specific UL, CSA, CE, RoHS, REACH, or other material-compliance or certification information for the JLLN050. This should not be interpreted to mean the fuse does or does not hold a particular certification. Where a listing, approval, or material-compliance requirement matters for the application, verify it against authoritative documentation and markings for the exact JLLN050 catalog number.

Where It Works Best

The Littelfuse JLLN050 50A Class T fuse is best considered for compatible electrical equipment whose specifications call for its particular combination of 50A continuous current, Class T construction, fast-acting operation, and current-limiting characteristics. For an AC application, confirm the 300VAC maximum voltage and 200 kA interrupting rating at 300VAC. For DC service, the corresponding figures are 160VDC maximum and 20 kA at 160VDC.