KLSR020 - 20Amp Fuse

KLSR020 - 20Amp Fuse

The KLSR020 is a 20A Class RK1 fast-acting, current-limiting fuse designed for applications where quick response to overloads and short circuits is a key part of the protection strategy. Its single-element silver-link design combines fast-acting operation with current-limiting performance, helping reduce equipment damage caused by the heating and magnetic effects of short-circuit currents. If you're matching an existing fuse, don't stop at the 20A marking—Class RK1, fast-acting operation, voltage, interrupting capacity, physical format, and holder compatibility all matter.

Key Features and Benefits

• 20A continuous current rating for circuits and equipment specifically requiring this amperage.
• Class RK1 fuse with the electrical and physical characteristics associated with this fuse class.
• Fast-acting (F) operation provides quick overload and short-circuit response.
• Built around a single-element silver-link design.
• Current-limiting construction helps reduce equipment damage caused by the heating and magnetic effects of short-circuit currents.
• Rated for operation up to 600VAC.
• Also rated for up to 250VDC in compatible DC applications.
• Industrial cartridge construction makes the physical fuse format straightforward to identify during replacement.
• Non-indicating design for equipment that does not require integral fuse-status indication.
• Installs using a compatible fuse block, clip, or holder.

Technical Specifications

• Catalog Number: KLSR020
  
• Manufacturer Description: FUS 600V F/A CLASS RK1 20A
  
• Series: KLSR
  
• Product Type: Fast-Acting, Current-Limiting Fuse
  
• Continuous Current Rating: 20A
  
• Maximum AC Voltage: 600VAC
  
• Maximum DC Voltage: 250VDC
  
• AC Interrupting Rating: 200,000A at 600VAC
  
• DC Interrupting Rating: 20,000A at 250VDC
  
• Listed Interrupting Rating: 20 kA at 250VDC
  
• Opening Characteristic: Fast-Acting (F)
  
• Fuse Class: Class RK1
  
• Family Style: Current Limiting
  
• Construction / Size: Industrial Cartridge
  
• Element Design: Single-element silver link
  
• Indicating: No
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Specified Holder Series: LFR60030 Series
  

Material Compliance and Certifications

The supplied manufacturer information identifies the KLSR Series as using a single-element silver-link design. It confirms the KLSR020's Class RK1 classification, current-limiting family style, fast-acting opening characteristic, and industrial cartridge construction.

Where It Works Best

The KLSR020 20A fuse is a strong match for equipment specifically designed around a Class RK1 fast-acting, current-limiting fuse and requiring the corresponding electrical ratings. The manufacturer identifies variable speed drives, rectifiers, and other equipment containing surge-sensitive components as applications where the KLSR Series' fast response can be useful. Its current-limiting design is intended to reduce equipment damage associated with the heating and magnetic effects of short-circuit currents.