LLSRK150ID - 150Amp Fuse

LLSRK150ID - 150Amp Fuse

When equipment suddenly shuts down, the last thing your maintenance team needs is a lengthy search for a blown fuse. The Littelfuse LLSRK150ID makes that job easier. This 150-amp Class RK1 time-delay indicating fuse features a built-in indicator window that darkens when the fuse opens, helping technicians quickly identify where to begin troubleshooting. It's a small feature, but when production is on hold, every minute matters.

Part of the Littelfuse POWR-PRO LLSRK_ID series, the LLSRK150ID protects compatible industrial and commercial electrical circuits from overloads and short circuits. Its time-delay characteristics allow it to handle brief current surges, such as those that occur when motors start, without opening unnecessarily. That means fewer interruptions caused by normal equipment operation.

Key Features and Benefits

• 150A Time-Delay Protection
• Visible Blown-Fuse Indicator
• Patented Indicator™ Technology
• Class RK1 Current-Limiting Design
• High Short-Circuit Interrupting Capacity
• Precision-Formed Short-Circuit Elements
• Solid-State Overload Section
• Reduced Mechanical Fatigue
• Helps Prevent Nuisance Fuse Openings
• Handles Brief Startup Current Surges

Technical Specifications

• Manufacturer: Littelfuse
  
• Catalog Number: LLSRK150ID
  
• Series: LLSRK_ID
  
• Product Family: POWR-PRO Fuse
  
• Product Type: Industrial Cartridge Fuse
  
• Fuse Class: Class RK1
  
• Continuous Current Rating: 150A
  
• Maximum AC Voltage: 600V AC
  
• Maximum DC Voltage: 300V DC
  
• Opening Characteristic: Slo-Blo / Time Lag (T) / Time Delay
  
• Terminal Style: Knife-Blade
  
• Blown-Fuse Indication: Yes
  
• Interrupting Capacity: 200,000A
  
• DC Interrupting Rating: 20,000A at 300V DC
  
• Short-Circuit Elements: Precision-Formed
  
• Overload Section: Solid-State, No Moving Parts
  
• Fuse Design: Current-Limiting
  

Material Compliance and Certifications

The available manufacturer specifications do not identify individual UL or CSA certification listings, RoHS compliance, REACH declarations, or detailed material composition information for this catalog number. If your project requires documentation for these standards, verify the current certifications and compliance declarations for the exact LLSRK150ID part number.

Where It Works Best

• Industrial Motor Circuits
• Manufacturing Machinery
• Factory Electrical Equipment
• Industrial Control Panels
• Commercial Electrical Systems
• Equipment with Repeated Startup Surges
• Industrial Maintenance Applications
• High Availability Fault-Current Circuits
• Compatible Class RK1 Fuse Holders
• Facilities Where Downtime Matters