KLNR020 - 20Amp Fuse

KLNR020 - 20Amp Fuse

The KLNR020 is a 20A Class RK1 fast-acting current-limiting fuse designed for your electrical equipment that needs quick overload and short-circuit protection. It combines a single-element silver-link design with fast-acting operation, making it especially suitable for surge-sensitive equipment. Motors, transformers, solenoids, and similar inductive loads can create normal inrush current, and the manufacturer cautions that KLNR/KLSR fuses may need substantial oversizing in those applications to avoid opening during harmless inrush events.

Key Features and Benefits

• 20A continuous current rating for equipment specifically designed around this fuse rating.
• Class RK1 design provides a clearly defined fuse class for replacement and application matching.
• Fast-acting (F) opening characteristic provides quick overload and short-circuit protection.
• The KLNR Series uses a single-element silver link, supporting its fast-acting response.
• The current-limiting design helps reduce damage from the heating and magnetic effects of short-circuit currents.
• Manufacturer application guidance includes variable-speed drives, rectifiers, and other equipment with surge-sensitive components.
• Industrial cartridge construction supports compatible fuse blocks, clips, and holders.
• The non-indicating configuration keeps the design straightforward; this model does not provide built-in blown-fuse indication.

Technical Specifications

• Catalog Number: KLNR020
  
• Manufacturer Description: FUS 250V F/A CLASS RK1 20A
  
• Series: KLNR
  
• Product Type: Fast-Acting Current-Limiting Fuse
  
• Continuous Current Rating: 20A
  
• 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: Industrial Cartridge
  
• Indicating: No
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Specified PG Holder: LFR25030 Series
  

Material Compliance and Certifications

The supplied manufacturer information identifies the KLNR020 as a Class RK1 current-limiting fuse and discusses the KLNR/KLSR Series in the context of the current-limiting capability of UL Class RK1 fuses. However, the supplied specifications do not provide an individual certification or listing number for the KLNR020. Therefore, you should not assume an individual listing number from the series information alone.

Where It Works Best

The KLNR020 20A fuse best matches electrical equipment designed for a 20A Class RK1 fast-acting, current-limiting fuse with the corresponding voltage, interrupting, physical, and mounting requirements. The manufacturer specifically identifies variable speed drives, rectifiers, and other equipment containing surge-sensitive components as applications where the fast-acting characteristics of the KLNR/KLSR family can be useful.