KLNR003 - 3 Amp Fuse

KLNR003 - 3 Amp Fuse

The KLNR003 is a 3A Class RK1 fast-acting, current-limiting fuse designed for your electrical equipment that requires quick overload and short-circuit protection. Part of the KLNR Series, it uses a single-element, silver-link design and carries a maximum rating of 250VAC and 125VDC. Its current-limiting performance also helps reduce equipment damage from the heating and magnetic effects of short-circuit currents. One detail matters when choosing this fuse: KLNR003 is fast-acting, not time-delay. The manufacturer cautions that KLNR/KLSR fuses used with inductive loads such as motors, solenoids, and transformers may need to be greatly oversized to avoid opening during harmless inrush currents. For that reason, don't match on the 3A rating alone—confirm the fuse class, opening characteristic, voltage, interrupting rating, physical format, and equipment requirements before replacing it.

Key Features and Benefits

• 3A continuous current rating for equipment specifically designed around this amperage and fuse configuration.
• Fast-acting (F) response provides fast overload and short-circuit protection.
• Class RK1 fuse configuration provides an important compatibility point when matching a replacement.
• Current-limiting design helps reduce equipment damage caused by the heating and magnetic effects of short-circuit currents.
• Uses the KLNR/KLSR Series' single-element, silver-link design.
• The manufacturer identifies variable speed drives, rectifiers, and other surge-sensitive equipment as applications that can benefit from the series' fast-acting characteristics.
• Industrial cartridge construction supports installations designed for the corresponding Class RK1 fuse format.
• Non-indicating design for applications that do not require a built-in visual status indicator.

Technical Specifications

• Catalog Number: KLNR003
  
• Manufacturer Description: FUS 250V F/A CLASS RK1 3A
  
• Series: KLNR
  
• Product Type: Fast-Acting Current-Limiting Fuse
  
• Continuous Current Rating: 3A
  
• 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
  
• Construction / Size: Industrial Cartridge
  
• Indicating: No
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Specified Holder Series: LFR25030 Series
  

Material Compliance and Certifications

The supplied manufacturer information identifies the KLNR003 as a Class RK1 current-limiting fuse. It documents its 3A rating, fast-acting opening characteristic, AC and DC voltage limits, interrupting ratings, industrial cartridge construction, and mounting method.

Where It Works Best

The KLNR003 3A fuse is best for electrical equipment that requires a 3A, Class RK1, fast-acting, current-limiting fuse with the corresponding electrical and physical specifications. The manufacturer's application guidance specifically points to variable speed drives, rectifiers, and other equipment containing surge-sensitive components, where fast-acting protection can be important.