KLSR004 - 4Amp Fuse

KLSR004 - 4Amp Fuse

The KLSR004 is a 4A Class RK1 fast-acting, current-limiting fuse designed for your electrical equipment that requires quick response to overloads and short circuits. Its electrical ratings are specific: up to 600VAC or 250VDC, with an AC interrupting rating of 200,000A at 600VAC and a DC interrupting rating of 20,000A at 250VDC. For anyone replacing an existing fuse, the 4A rating is only one part of the match. Class RK1, fast-acting operation, AC/DC voltage ratings, interrupting capacity, physical configuration, and mounting requirements should all agree with the equipment specification.

Key Features and Benefits

• 4A continuous current rating for equipment designed around a 4-amp Class RK1 fuse.
• The fast-acting (F) opening characteristic provides a quick response to overload and short-circuit conditions.
• The current-limiting design helps reduce equipment damage from the heating and magnetic effects of short-circuit currents.
• Rated for a maximum of 600VAC, supporting equipment that specifically requires this AC voltage class.
• Also carries a 250VDC maximum voltage rating for compatible DC applications.
• The KLSR series uses a single-element silver-link design to deliver fast-acting performance.
• Match industrial cartridge construction to the equipment's physical requirements.
• Designed for installation through a compatible fuse block, clip, or holder.
• The specified holder reference for this catalog number is the LFR60030 Series.
• The non-indicating design makes indicating status another specification to confirm when replacing an existing fuse.

Technical Specifications

• Catalog Number: KLSR004
  
• Manufacturer Description: FUS 600V F/A CLASS RK1 4A
  
• Series: KLSR
  
• Product Type: Fast-Acting, Current-Limiting Fuse
  
• Continuous Current Rating: 4A
  
• Maximum AC Voltage: 600VAC
  
• Maximum DC Voltage: 250VDC
  
• AC Interrupting Rating: 200,000A at 600VAC
  
• DC Interrupting Rating: 20,000A 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 manufacturer identifies a silver link as part of the KLSR series' single-element construction. The supplied product information does not provide a complete KLSR004-specific material composition for the cartridge body, terminals, filler, or other components, so do not assume additional construction materials.

Where It Works Best

The KLSR004 is a strong fit for electrical equipment specifically designed around a 4A Class RK1 fast-acting, current-limiting industrial cartridge fuse. Manufacturer guidance identifies variable speed drives, rectifiers, and other equipment containing surge-sensitive components as examples where the KLSR series' fast-acting response can be useful.

For AC installations, confirm the equipment requirements match the 600VAC maximum rating and 200,000A interrupting rating at 600VAC. For DC applications, check against the 250VDC maximum and 20,000A interrupting rating at 250VDC. Physical compatibility also matters: the KLSR004 is an industrial cartridge fuse intended for a suitable fuse block, clip, or holder, with the LFR60030 Series provided as the specified holder reference.