KLLU1600 - 1600Amp Fuse

KLLU1600 - 1600Amp Fuse

At 1600 amps, getting the replacement details right matters well beyond simply matching the number printed on the fuse. The KLLU1600 is a 1600A Class L time-delay, current-limiting fuse with bolt-in construction, rated for systems up to 600VAC or 300VDC. Current-limiting performance is designed to reduce short-circuit damage to systems and equipment. The manufacturer identifies the KLLU Series as UL Listed and states that it meets or exceeds UL requirements for Class L fuses. When you're evaluating the KLLU1600 as a replacement, check the complete specification—1600A, Class L, time-delay operation, voltage, interrupting capacity, and bolt-in mounting—not amperage alone.

Key Features and Benefits

• 1600A continuous current rating for equipment specifically designed around a 1600-amp Class L fuse.
• The Class L configuration provides a defined fuse class to match equipment requirements.
• Time-delay operation helps accommodate temporary high-current conditions rather than treating every short-duration current rise the same way.
• The KLLU Series provides a minimum 10-second time delay at 500% of rated current, making it well suited to properly designed circuits with substantial starting currents.
• Supports AC equipment requirements up to 600 VAC.
• The current-limiting design is intended to reduce short-circuit damage to systems and equipment.
• Bolt-in construction gives maintenance personnel a specific physical mounting format to verify during replacement.
• Non-indicating design is another important detail to confirm when matching the KLLU1600 to existing equipment.

Technical Specifications

• Catalog Number: KLLU1600
  
• Manufacturer Description: FUS 600V T/D CLASS L 1600A
  
• Series: KLLU
  
• Product Type: Time-Delay Current-Limiting Fuse
  
• Continuous Current Rating: 1600A
  
• 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 these fuses meet or exceed UL requirements for Class L fuses. The supplied information for the KLLU1600 also confirms its Class L classification, time-delay operation, current-limiting family style, electrical ratings, and bolt-in construction.

Where It Works Best

The KLLU1600 suits electrical equipment designed for a 1600A Class L time-delay, current-limiting fuse with bolt-in mounting. Its minimum 10-second time delay at 500% of rating makes the KLLU Series particularly relevant to properly engineered systems where large motors and other inductive loads can produce substantial temporary starting currents. The manufacturer also identifies the KLLU Series for motor branch-circuit protection when sized and applied appropriately.