JLLN350 - 350Amp Fuse

JLLN350 - 350Amp Fuse

When your equipment calls for the Littelfuse JLLN350, confirm several specifications before the fuse goes into service. This 350-amp Class T fuse combines fast-acting operation with a current-limiting design and knife-blade/bolt-in construction. For equipment designed around these exact requirements, the JLLN350 is a straightforward electrical component built to last when correctly selected, installed, and operated within its specified ratings.

Key Features and Benefits

• 350A continuous current rating: Clearly identifies the amperage requirement for compatibility checks.
• Class T configuration: Provides an important fuse-class specification when matching the JLLN350 to existing equipment.
• Fast-acting opening: Littelfuse specifies the JLLN350 as Fast-Acting (F).
• Current-limiting design: A defined family characteristic that should correspond with the requirements of the electrical system.
• 300VAC maximum voltage: Rated for compatible AC applications up to 300 volts.
• 125VDC maximum voltage: Also carries a manufacturer-specified DC rating up to 125 volts.
• Knife-blade/bolt-in construction: Gives you a physical configuration to verify alongside the electrical ratings.
• Non-indicating design: The manufacturer specifies this fuse as non-indicating.

Technical Specifications

• Manufacturer: Littelfuse
  
• Catalog Number: JLLN350
  
• Series: JLLN
  
• Manufacturer Description: FUS 300V F/A CLASS T 350A
  
• Continuous Current Rating: 350A
  
• Fuse Class: Class T
  
• 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: LFT30400 Series
  

Material Compliance and Certifications

The manufacturer information supplied for the JLLN350 does not specify particular UL, CSA, CE, RoHS, REACH, or other certification or material-compliance details. This should not be interpreted as meaning the fuse does not carry any of these approvals. If a particular certification or compliance requirement is important for your equipment, facility, or application, confirm it against current authoritative Littelfuse documentation and the markings on the actual product.

Where It Works Best

The Littelfuse JLLN350 350A Class T fuse is best suited to compatible electrical equipment that specifically requires a 350A, fast-acting, current-limiting Class T fuse with knife-blade/bolt-in construction. It is particularly straightforward to evaluate for replacement or maintenance work because the manufacturer provides distinct AC and DC specifications: 300VAC with a 200 kA interrupting rating and 125VDC with a 20 kA interrupting rating.