KLLU3000 - 3000Amp Fuse

KLLU3000 - 3000Amp Fuse

When you're replacing a 3000A Class L fuse, the amp rating is only one part of the match. The KLLU3000 is a 3000-amp, Class L, time-delay, current-limiting fuse in a bolt-in configuration, rated for systems up to 600VAC or 300VDC. The manufacturer identifies the KLLU Series as UL Listed and meeting or exceeding UL requirements for Class L fuses. For a replacement or new application, confirm the complete electrical and physical specifications—not just the 3000A marking—to ensure the KLLU3000 matches the equipment.

Key Features and Benefits

• 3000A continuous current rating for equipment specifically designed around a 3000-amp Class L fuse.
• Class L configuration provides the defined fuse class needed for proper equipment and replacement matching.
• Time-delay operation accommodates temporary high-current conditions associated with startup.
• The manufacturer specifies a minimum 10-second time delay at 500% of the fuse rating.
• Current-limiting design helps reduce short-circuit damage to electrical systems and connected equipment.
• Rated for operation up to 600VAC.
• Also rated for applications up to 300VDC, when the equipment is designed to meet the fuse's full DC specifications.
• Bolt-in construction and mounting provide a specific physical configuration that can be checked directly against the equipment.
• Non-indicating design for installations requiring this fuse configuration.

Technical Specifications

• Catalog Number: KLLU3000
  
• Manufacturer Description: FUS 600V T/D CLASS L 3000A
  
• Series: KLLU
  
• Product Type: Time-Delay Current-Limiting Fuse
  
• Continuous Current Rating: 3000A
  
• 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 KLLU Series fuses meet or exceed UL requirements for Class L fuses. The supplied KLLU3000 information further identifies this model as a Class L, time-delay, current-limiting fuse.

Where It Works Best

The KLLU3000 3000A fuse suits electrical equipment designed for a Class L, time-delay, current-limiting fuse with bolt-in mounting. The manufacturer specifically identifies motor branch-circuit protection as a KLLU Series application. Its minimum 10-second time delay at 500% of rating is intended to accommodate the heavy starting currents encountered with large motors and other inductive loads. At the same time, its current-limiting characteristic is designed to reduce short-circuit damage.