KLSR500 - 500Amp Fuse

KLSR500 - 500Amp Fuse

When your equipment calls for a 500A Class RK1 fast-acting fuse, matching the catalog number and full electrical specification is far more useful than shopping by amperage alone. The KLSR500 is a 500-amp, current-limiting fuse from the KLSR Series, featuring a single-element silver-link design engineered for fast-acting overload and short-circuit protection. Because fast-acting fuses behave differently from time-delay designs, verify the fuse class, voltage, interrupting capacity, opening characteristic, construction, and equipment requirements before deciding on a replacement.

Key Features and Benefits

• 500A continuous current rating for equipment specifically designed around a 500-amp fuse requirement.
• Class RK1 fuse configuration provides a clear specification to match when replacing an existing fuse.
• Fast-acting (F) opening characteristic delivers fast overload and short-circuit protection.
• A single-element silver link is used in the KLSR Series design.
• Current-limiting construction helps reduce equipment damage caused by the heating and magnetic effects associated with short-circuit currents.
• Handles applications requiring a maximum rating of up to 600VAC.
• Suitable for properly matched DC equipment requiring up to 300VDC.
• Knife-blade construction provides the physical format specified for the non-indicating LSR500.
• Install it with a compatible fuse block, clip, or holder.
• Non-indicating design means there is no integral blown-fuse indicator.

Technical Specifications

• Catalog Number: KLSR500
  
• Manufacturer Description: FUS 600V F/A CLASS RK1 500A
  
• Series: KLSR
  
• Product Type: Fast-Acting, Current-Limiting Fuse
  
• Continuous Current Rating: 500A
  
• Maximum AC Voltage: 600VAC
  
• Maximum DC Voltage: 300VDC
  
• AC Interrupting Capacity: 200,000A at 600VAC
  
• DC Interrupting Capacity: 20,000A at 300VDC
  
• Listed Interrupting Rating: 20 kA at 300VDC
  
• Opening Characteristic: Fast-Acting (F)
  
• Fuse Class: Class RK1
  
• Family Style: Current Limiting
  
• Construction / Size: Knife-Blade
  
• Element Design: Single-element silver link
  
• Indicating: No
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Specified PG Holder: LFR60600 Series
  

Material Compliance and Certifications

The supplied manufacturer information specifically identifies a silver link as part of the KLSR Series' single-element construction. The supplied specifications do not include a complete product-specific material breakdown for the KLSR500—including the body, terminals, filler, and other components—so do not assume additional materials.

Where It Works Best

The KLSR500 suits electrical equipment that requires a 500A, Class RK1, fast-acting, current-limiting fuse with matching voltage, interrupting, and physical requirements. The manufacturer highlights variable speed drives, rectifiers, and other equipment containing surge-sensitive components as examples where the fast-acting KLSR Series can be used. Its current-limiting design is intended to reduce damage caused by the heating and magnetic effects of short-circuit currents.