KLNR150 - 150Amp Fuse

KLNR150 - 150Amp Fuse

When your equipment calls for a 150A Class RK1 fast-acting fuse, the KLNR150 delivers a specific set of electrical and physical characteristics. The KLNR150 is a 150-amp current-limiting fuse rated for a maximum of 250VAC and 125VDC, with a single-element silver-link design intended for fast-acting overload and short-circuit protection. The manufacturer also highlights variable speed drives, rectifiers, and other equipment containing surge-sensitive components as applications where the KLNR family's fast response can be useful. For a correct replacement, don't stop at matching 150 amps—verify Class RK1, voltage, interrupting rating, fast-acting operation, knife-blade construction, and mounting compatibility against the equipment requirements.

Key Features and Benefits

• 150A continuous current rating for equipment specifically requiring a 150-amp fuse.
• Class RK1 configuration provides a defined fuse class for accurate replacement matching.
• Rated for a maximum of 250VAC and 125VDC.
• Fast-acting (F) opening characteristic provides rapid overload and short-circuit protection.
• Current-limiting design helps reduce equipment damage caused by the heating and magnetic effects of short-circuit currents.
• The KLNR family uses a single-element silver-link design for fast-acting protection.
• Knife-blade construction provides the physical format specified for KLNR150.
• Non-indicating design—there is no built-in indication feature specified for this catalog number.

Technical Specifications

• Catalog Number: KLNR150
  
• Manufacturer Description: FUS 250V F/A CLASS RK1 150A
  
• Series: KLNR
  
• Product Type: Fast-Acting Current-Limiting Fuse
  
• Continuous Current Rating: 150A
  
• 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: Knife-Blade
  
• Indicating: No
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Specified Holder Series: LFR25200 Series
  

Material Compliance and Certifications

The supplied manufacturer information confirms the KLNR150's Class RK1 classification, current-limiting family style, single-element silver-link design, electrical ratings, fast-acting operation, and knife-blade construction. The manufacturer's broader application information also discusses the current-limiting capability of UL Class RK1 fuses.

Where It Works Best

The KLNR150 suits electrical equipment that requires a 150A, Class RK1, fast-acting current-limiting fuse rated up to 250VAC or 125VDC. The manufacturer specifically identifies variable speed drives, rectifiers, and other equipment containing surge-sensitive components as examples where the KLNR/KLSR family's fast-acting protection can be appropriate. For AC service, confirm that the equipment requirements fall within the 250VAC maximum and 200,000A interrupting rating at 250VAC. For DC service, verify compatibility with the 125VDC maximum and 20,000A interrupting rating at 125VDC.