KLSR150 - 150Amp Fuse

KLSR150 - 150Amp Fuse

The KLSR150 is a 150A Class RK1 fast-acting, current-limiting fuse for your electrical equipment that needs quick overload and short-circuit protection. Its single-element silver-link design is a defining feature of the KLSR Series. At the same time, the knife-blade format provides the physical configuration required for compatible fuse blocks, clips, and holders. For replacement work, don't stop at the 150A marking—confirm the Class RK1 designation, fast-acting characteristic, voltage ratings, interrupting capacity, knife-blade construction, and mounting requirements against the equipment specifications.

Key Features and Benefits

• 150A continuous current rating for equipment specifically designed around a 150-amp fuse requirement.
• Class RK1 fuse configuration provides a defined fuse class for compatibility checks and replacement selection.
• Fast-acting (F) opening characteristic provides fast overload and short-circuit protection.
• Uses the KLSR Series' single-element silver-link design.
• Current-limiting construction helps reduce damage associated with the heating and magnetic effects of short-circuit currents.
• Rated for compatible electrical systems up to 600VAC.
• Also rated for compatible DC applications up to 300VDC.
• Knife-blade construction provides the specified physical connection style.
• The non-indicating design means it has no built-in blown-fuse indicator.
• Installs using a compatible fuse block, clip, or holder.

Technical Specifications

• Catalog Number: KLSR150
  
• Manufacturer Description: FUS 600V F/A CLASS RK1 150A
  
• Series: KLSR
  
• Product Type: Fast-Acting, Current-Limiting Fuse
  
• Continuous Current Rating: 150A
  
• 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: LFR60200 Series
  

Material Compliance and Certifications

The supplied manufacturer information specifically identifies the KLSR Series as using a single-element silver link. The supplied specifications do not include a complete, product-specific material breakdown for the KLSR150—including the body, terminal, filler, and other internal materials—so those details should not be assumed.

Where It Works Best

The KLSR150 150A fuse best matches electrical equipment that requires a Class RK1, fast-acting, current-limiting fuse with the corresponding electrical and physical ratings. The manufacturer calls out variable speed drives, rectifiers, and other equipment containing surge-sensitive components as applications where the fast-acting characteristics of the KLSR Series can be useful. Its current-limiting design is intended to help reduce the damaging heating and magnetic effects associated with short-circuit currents.