KLNR600 - 600Amp Fuse

KLNR600 - 600Amp Fuse

A 500-amp rating is the first thing you may notice on the KLNR500, but proper fuse selection goes well beyond amperage. The KLNR500 is a 500A Class RK1 fast-acting, current-limiting fuse featuring the KLNR series' single-element silver-link design for overload and short-circuit protection. If you're matching a KLNR500 for replacement or equipment maintenance, check the full specification—not just "500A"—including Class RK1, voltage, interrupting capacity, opening characteristic, physical configuration, and holder compatibility.

Key Features and Benefits

• 500A continuous current rating for electrical equipment designed to use a 500-amp Class RK1 fuse.
• The fast-acting (F) opening characteristic provides a fast response to overload and short-circuit conditions.
• The KLNR series uses a single-element silver-link design for fast-acting protection.
• Current-limiting construction helps reduce equipment damage caused by the heating and magnetic effects associated with short-circuit currents.
• Knife-blade construction provides the specified physical format for this 500A model.
• The non-indicating configuration means it has no built-in blown-fuse indication feature.
• Installation requires a compatible fuse block, clip, or holder.

Technical Specifications

• Catalog Number: KLNR500
  
• Manufacturer Description: FUS 250V F/A CLASS RK1 500A
  
• Series: KLNR
  
• Product Type: Fast-Acting Current-Limiting Fuse
  
• Continuous Current Rating: 500A
  
• Maximum AC Voltage: 250VAC
  
• Maximum DC Voltage: 125VDC
  
• AC Interrupting Rating: 200,000A at 250VAC
  
• DC Interrupting Rating: 20,000A at 125VDC
  
• Opening Characteristic: Fast-Acting (F)
  
• Fuse Class: Class RK1
  
• Family Style: Current Limiting
  
• Element Design: Single-element silver link
  
• Construction / Size: Knife-Blade
  
• Indicating: No
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Specified Holder Series: LFR25600 Series
  

Material Compliance and Certifications

The supplied manufacturer information confirms the KLNR500's Class RK1 classification, 500A current rating, fast-acting operation, current-limiting family style, single-element silver-link design, electrical ratings, knife-blade configuration, and specified mounting method. The manufacturer's KLNR/KLSR information also covers applications that require the current-limiting ability associated with UL Class RK1 fuses.

Where It Works Best

The KLNR500 500A Class RK1 fuse best matches electrical equipment designed for a 500A fast-acting, current-limiting Class RK1 fuse with knife-blade construction. The manufacturer identifies variable speed drives, rectifiers, and other equipment containing surge-sensitive components as examples where the fast-acting characteristics of the KLNR/KLSR series can be useful. For an AC application, verify that the equipment requirements fall within the KLNR500's 250VAC maximum voltage and 200,000A interrupting rating at 250VAC. For DC service, match the application against its 125VDC maximum voltage and 20,000A interrupting rating at 125VDC. Also confirm physical compatibility with the specified fuse block, clips, or LFR25600 Series holder.