LLSRK200ID - 200Amp Fuse

LLSRK200ID - 200Amp Fuse

When a fuse opens in the middle of a busy workday, the last thing your maintenance team needs is a long search for the problem. The Littelfuse LLSRK200ID helps take the guesswork out of that first step. This 200-amp Class RK1 time-delay indicating fuse features a built-in window that darkens when the fuse opens, making it easier to spot the affected fuse in an electrical panel. It's a small detail that can make a real difference when equipment is down and every minute counts.

Key Features and Benefits

• 200A Time-Delay Overcurrent Protection
• Built-In Blown-Fuse Indicator Window
• Patented Indicator™ Technology
• Class RK1 Current-Limiting Design
• High Short-Circuit Interrupting Capacity
• Precision-Formed Short-Circuit Elements
• Solid-State Overload Section
• No Moving Parts in the Overload Section
• Reduced Nuisance Fuse Openings
• Improved Current-Cycling Characteristics
• Faster Identification of Open Fuses

Technical Specifications

• Manufacturer: Littelfuse
  
• Catalog Number: LLSRK200ID
  
• Series: LLSRK_ID
  
• Product Family: POWR-PRO Fuse
  
• Product Type: Industrial Cartridge Fuse
  
• Fuse Class: Class RK1
  
• Continuous Current Rating: 200A
  
• 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 Design with No Moving Parts
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Associated Fuse Holder Series: LFR60200 Series
  

Material Compliance and Certifications

The Littelfuse LLSRK200ID is a Class RK1 industrial fuse in the POWR-PRO LLSRK_ID series. Its manufacturer-published electrical specifications include a 200A continuous current rating, maximum voltage ratings of 600V AC and 300V DC, and high interrupting capacities for short-circuit protection.

Specific certification listings and material compliance declarations are not provided in the available product specifications. For applications requiring documented UL or CSA certification, RoHS compliance, REACH declarations, or other regulatory information, confirm the applicable approvals and compliance documentation for the exact LLSRK200ID catalog number with Littelfuse.

Where It Works Best

The LLSRK200ID is well suited to electrical systems where temporary current surges are part of normal operation, but dependable short-circuit protection is still essential. Its indicating window is especially helpful in installations where maintenance crews need to quickly locate an opened fuse.

• Industrial Motor Circuits
• Manufacturing and Production Equipment
• Industrial Control Panels
• Commercial Electrical Distribution Systems
• Motor-Driven Machinery
• Equipment with Temporary Startup Surges
• Electrical Systems with Repeated Load Cycling
• Industrial Maintenance and Fuse Replacement
• Applications with High Available Fault Current
• Systems Requiring Visible Blown-Fuse Indication
• Compatible Class RK1 Fuse Blocks and Holders