KLNR040 - 40Amp Fuse

KLNR040 - 40Amp Fuse

The KLNR040 is built for your applications that require a specific combination: 40 amps, Class RK1, fast-acting operation, and current-limiting protection. Its current-limiting design also helps reduce equipment damage associated with the heating and magnetic effects of short-circuit currents. The manufacturer specifically identifies variable speed drives, rectifiers, and other equipment containing surge-sensitive components as examples where the KLNR family's fast response can be useful. Remember that proper fuse replacement involves more than matching the 40A rating: fuse class, opening characteristic, voltage, interrupting capacity, cartridge style, and mounting compatibility should all match the equipment requirements.

Key Features and Benefits

• 40A continuous current rating for equipment designed around a 40-amp Class RK1 fuse.
• Fast-acting (F) opening characteristic provides quick overload and short-circuit protection.
• The Class RK1 fuse design gives you a clearly defined fuse class to match the equipment specification.
• Current-limiting construction helps reduce damage caused by the heating and magnetic effects of short-circuit currents.
• Built around the KLNR/KLSR family's single-element silver-link design.
• Supports applications up to 250VAC and 125VDC within the stated electrical ratings.
• Industrial cartridge construction installs using an appropriate fuse block, clip, or holder.
• The non-indicating configuration keeps the design straightforward when external fuse indication is not required.

Technical Specifications

• Catalog Number: KLNR040
  
• Manufacturer Description: FUS 250V F/A CLASS RK1 40A
  
• Series: KLNR
  
• Product Type: Fast-Acting Current-Limiting Fuse
  
• Continuous Current Rating: 40A
  
• 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: LFR25060 Series
  

Material Compliance and Certifications

The supplied manufacturer information confirms that the KLNR040 belongs to the Class RK1 current-limiting KLNR Series and identifies the KLNR/KLSR family as using a single-element silver-link design. The manufacturer's documentation also discusses the family in the context of applications requiring the current-limiting ability of UL Class RK1 fuses.

Where It Works Best

The KLNR040 40A fuse best matches electrical equipment designed for a 40A Class RK1 fast-acting, current-limiting fuse with the corresponding voltage and interrupting requirements. The manufacturer points to variable speed drives, rectifiers, and other equipment containing surge-sensitive components as examples where the KLNR/KLSR family's fast-acting characteristics can be beneficial.