KLLU2500 - 2500Amp Fuse

KLLU2500 - 2500Amp Fuse

A 2500A fuse is a very specific piece of protection equipment, so matching the catalog number and full electrical profile matters. The KLLU2500 is a 2500-amp Class L time-delay, current-limiting fuse with bolt-in construction, a maximum rating of 600VAC and 300VDC, and a 200,000A interrupting rating at 600VAC. The manufacturer identifies the KLLU Series as UL Listed and states that it meets or exceeds UL requirements for Class L fuses. If you're replacing an existing KLLU2500, don't stop at matching 2500A—confirm the Class L configuration, time-delay characteristic, voltage ratings, interrupting capacity, and bolt-in mounting against the equipment requirements.

Key Features and Benefits

• 2500A continuous current rating for electrical equipment specifically designed to use a 2500-amp Class L fuse.
• Class L fuse configuration provides a clearly defined electrical and physical profile for replacement matching.
• Time-delay operation helps accommodate temporary high-current conditions associated with equipment startup.
• The KLLU Series provides a minimum 10-second time delay at 500% of rated current, according to the manufacturer's specifications.
• This delay is particularly useful around the heavy starting currents of large motors and other inductive loads.
• Current-limiting design helps reduce short-circuit damage to systems and equipment.
• Supports electrical systems operating at up to 600VAC.
• Bolt-in construction makes mounting style another straightforward specification to verify during replacement.
• The non-indicating design matches applications that call for this configuration.

Technical Specifications

• Catalog Number: KLLU2500
  
• Manufacturer Description: FUS 600V T/D CLASS L 2500A
  
• Series: KLLU
  
• Product Type: Time-Delay Current-Limiting Fuse
  
• Continuous Current Rating: 2500A
  
• Maximum AC Voltage: 600VAC
  
• Maximum DC Voltage: 300VDC
  
• AC Interrupting Rating: 200,000A at 600VAC
  
• DC Interrupting Rating: 20,000A at 300VDC
  
• Opening Characteristic: Slo-Blo / Time Lag (T) / Time Delay
  
• Series Time-Delay Characteristic: Minimum 10 seconds at 500% of rated current
  
• Fuse Class: Class L
  
• Family Style: Current Limiting
  
• Construction / Size: Bolt-In
  
• Indicating: No
  
• Mounting Method: Bolt-In
  

Material Compliance and Certifications

The manufacturer identifies the KLLU Series as UL Listed and states that the series meets or exceeds UL requirements for Class L fuses. The supplied KLLU2500 specifications further identify it as a Class L, time-delay, current-limiting fuse with bolt-in construction.

Where It Works Best

The KLLU2500 best matches electrical equipment that requires a 2500A Class L, time-delay, current-limiting fuse with bolt-in mounting. The manufacturer specifically identifies motor branch-circuit protection as an application for the KLLU Series and notes that its time-delay characteristics help handle the heavy starting currents produced by large motors and other inductive loads.