KLLU1350 - 1350Amp Fuse

KLLU1350 - 1350Amp Fuse

When your equipment calls for a 1350A Class L fuse, amperage is only the starting point. The KLLU1350 is a 1350-amp, time-delay, current-limiting fuse with a bolt-in configuration, rated for up to 600VAC and 300VDC. For appropriately engineered motor branch circuits, the manufacturer states that KLLU fuses may be sized close to motor full-load current. The series is UL Listed, and the manufacturer states that it meets or exceeds UL requirements for Class L fuses.

Key Features and Benefits

• 1350A continuous current rating for equipment designed around a 1350-amp Class L fuse.
• Class L fuse design provides a defined electrical and physical specification for replacement matching.
• Time-delay opening characteristic helps accommodate temporary current increases associated with equipment startup.
• The KLLU Series provides a minimum 10-second time delay at 500% of its rated current, according to the manufacturer.
• 600VAC maximum voltage rating establishes a clear limit for compatible AC applications.
• Also rated for a maximum of 300VDC, with a 20,000A interrupting capability at 300VDC.
• Current-limiting construction is designed to reduce short-circuit damage to systems and equipment.
• Bolt-in construction makes the required mounting style easy to identify during replacement checks.
• The non-indicating design should match the existing equipment requirements.

Technical Specifications

• Catalog Number: KLLU1350
  
• Manufacturer Description: FUS 600V T/D CLASS L 1350A
  
• Series: KLLU
  
• Product Type: Class L Time-Delay Current-Limiting Fuse
  
• Continuous Current Rating: 1350A
  
• 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
  
• Time-Delay Characteristic: Minimum 10 seconds at 500% of rating, as specified for the KLLU Series
  
• 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 information for the KLLU1350 also establishes its Class L designation, current-limiting family style, time-delay opening characteristic, voltage and interrupting ratings, and bolt-in construction.

Where It Works Best

The KLLU1350 suits electrical equipment designed for a 1350A Class L, time-delay, current-limiting fuse with bolt-in mounting. Its time-delay characteristics make it particularly relevant to properly engineered circuits where substantial temporary starting current is expected, including qualifying large-motor and other inductive-load applications. The manufacturer also identifies the KLLU Series for motor branch-circuit protection when correctly sized and applied.