JLLN175 - 175Amp Fuse

JLLN175 - 175Amp Fuse

The Littelfuse JLLN175 provides a specific combination of ratings for equipment that requires a 175-amp Class T fuse. This fast-acting, current-limiting fuse carries a maximum rating of 300VAC and 125VDC, with an interrupting capacity of 200 kA at 300VAC and 20 kA at 125VDC. The JLLN175 is non-indicating and is designed for installation with a compatible fuse block, clip, or holder; Littelfuse identifies the LFT30200 Series as the PG holder. Whether you're replacing an existing JLLN175 or checking specifications for planned maintenance, this is a clearly defined electrical component built to last when properly selected and operated within its stated ratings.

Key Features and Benefits

• 175A continuous current rating: Matches equipment specifically requiring a 175-amp fuse.
• Class T fuse: Provides a clearly defined fuse classification that should match the equipment requirements.
• Fast-acting operation: Littelfuse specifies the JLLN175 with a Fast-Acting (F) opening characteristic.
• Current-limiting design: Another key specification to confirm when selecting the appropriate fuse for the application.
• 300VAC maximum rating: Supports applications designed around the fuse's specified AC voltage rating.
• 125VDC maximum rating: Provides a separately defined maximum DC voltage rating.
• Knife-blade/bolt-in construction: Helps identify the required physical format rather than relying on amperage alone.
• Non-indicating configuration: Manufacturer specifications list the JLLN175 as non-indicating.

Technical Specifications

• Manufacturer: Littelfuse
  
• Catalog Number: JLLN175
  
• Series: JLLN
  
• Manufacturer Description: FUS 300V F/A CLASS T 175A
  
• Fuse Class: Class T
  
• Continuous Current Rating: 175A
  
• Opening Characteristic: Fast-Acting (F)
  
• Family Style: Current Limiting
  
• Maximum AC Voltage: 300VAC
  
• Maximum DC Voltage: 125VDC
  
• AC Interrupting Rating: 200,000A (200 kA) at 300VAC
  
• DC Interrupting Rating: 20,000A (20 kA) at 125VDC
  
• Size / Construction: Knife-Blade/Bolt-In
  
• Indicating: No
  
• Mounting Method: Fuse Block / Clip / Holder
  
• PG Holder: LFT30200 Series
  

Material Compliance and Certifications

The supplied manufacturer specifications for the JLLN175 did not include specific UL, CSA, CE, RoHS, REACH, or other material-compliance or certification information. That doesn't mean the fuse lacks any particular approval; it simply means you shouldn't assume it based on the provided information. If your facility, project, or equipment requires a particular certification or compliance status, confirm it using the fuse markings and current authoritative Littelfuse documentation.

Where It Works Best

The Littelfuse JLLN175 175A Class T fuse suits compatible electrical equipment that calls for its combination of 175A current rating, fast-acting operation, current-limiting characteristics, and knife-blade/bolt-in construction. It is also appropriate where the equipment requirements align with its 300VAC maximum and 200 kA AC interrupting rating, or its separate 125VDC maximum and 20 kA DC interrupting rating.