LLSRK090ID - 90Amp Fuse

LLSRK090ID - 90Amp Fuse

A blown fuse can bring equipment to a standstill. Finding out which fuse opened shouldn't take longer than necessary. That's one reason the Littelfuse LLSRK090ID is worth a closer look. This 90-amp Class RK1 time-delay indicating fuse has a built-in window that darkens when the fuse opens, giving maintenance crews a quick visual clue about where to start troubleshooting. It's part of the Littelfuse POWR-PRO LLSRK_ID series and is designed to protect your properly rated electrical circuits against overloads and short circuits. Inside, precision-formed short-circuit elements help limit the effects of electrical faults, while the solid-state overload section has no moving parts that can suffer mechanical fatigue. With a 90A current rating, 600V AC maximum rating, and 300V DC maximum rating, the LLSRK090ID combines the protection industrial circuits need with a small but useful feature that makes maintenance easier.

Key Features and Benefits

• 90A Time-Delay Protection
• Visible Blown-Fuse Indicator
• Patented Indicator™ Technology
• Class RK1 Current-Limiting Design
• High Interrupting Capacity
• Precision-Formed Fuse Elements
• Solid-State Overload Section
• Reduced Nuisance Opening
• Knife-Blade Terminals

Technical Specifications

• Manufacturer: Littelfuse
  
• Catalog Number: LLSRK090ID
  
• Series: LLSRK_ID
  
• Product Family: POWR-PRO Fuse
  
• Product Type: Industrial cartridge fuse
  
• Fuse Class: Class RK1
  
• Continuous Current Rating: 90A
  
• 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
  
• AC Interrupting Rating: 200,000A at 600V AC
  
• Additional AC Interrupting Rating: 300,000A at 600V AC, subject to applicable manufacturer rating conditions
  
• DC Interrupting Rating: 20,000A at 300V DC
  
• Short-Circuit Elements: Precision-formed
  
• Overload Section: Solid-state, no moving parts
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Associated Fuse Holder Series: LFR60100 Series
  

Material Compliance and Certifications

The supplied product information doesn't identify specific certification listings or material compliance declarations. For applications requiring UL or CSA approvals, RoHS compliance, REACH documentation, or other certifications, check the current Littelfuse documentation for the exact LLSRK090ID part number.

Where It Works Best

The LLSRK090ID is intended for electrical systems that call for a 90A Class RK1 time-delay fuse. Its indicating window is particularly helpful in installations where technicians need to locate an opened fuse quickly, and its time-delay characteristics make it useful in circuits with brief, expected current surges.

• Industrial Motor Circuits
• Manufacturing Equipment
• Industrial Control Panels
• Commercial Electrical Systems
• Maintenance and Replacement Applications
• Equipment with Repeated Current Surges