LLSRK600ID - 600Amp Fuse

LLSRK600ID - 600Amp Fuse

A blown fuse is inconvenient enough. Having to check several fuses to find the problem makes it worse, especially when your production line is waiting to get back up and running.

The Littelfuse LLSRK600ID 600A Class RK1 time-delay indicating fuse helps reduce that frustration in electrical maintenance. Its built-in indicator window darkens when the fuse opens, giving technicians a quick visual way to identify which fuse needs attention: no unnecessary guessing, and less time spent tracking down the affected circuit.

Large motors and heavy machinery can draw a considerable amount of current during startup. Those brief surges are normal during operation, but they can cause problems if a fuse opens unnecessarily. The LLSRK600ID uses a time-delay design that lets it handle temporary current increases while still protecting against overloads and short circuits.

Key Features and Benefits

• Built-in blown-fuse indicator
• 600A continuous current rating
• Class RK1 current-limiting protection
• Time-delay operation
• Reduced nuisance fuse openings
• Precision-formed short-circuit elements
• Solid-state overload section
• No moving parts in the overload section
• High AC and DC interrupting ratings
• Faster troubleshooting
• Knife-blade terminals
• Potential for simpler fuse inventory

Technical Specifications

• Manufacturer: Littelfuse
  
• Catalog Number: LLSRK600ID
  
• Series: LLSRK_ID
  
• Product Family: POWR-PRO Fuse
  
• Fuse Class: Class RK1
  
• Continuous Current Rating: 600A
  
• 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 Indicator: Yes
  
• AC Interrupting Rating: 200,000A at 600V AC
  
• Additional AC Interrupting Rating: 300,000A at 600V AC, subject to manufacturer rating conditions
  
• DC Interrupting Rating: 20,000A at 300V DC
  
• Mounting Method: Fuse Block / Clip / Holder
  
• Associated Holder Series: LFR60600 Series
  
• Short-Circuit Elements: Precision-Formed
  
• Overload Section: Solid-State, No Moving Parts
  

Material Compliance and Certifications

The manufacturer's supplied specifications establish the fuse's electrical ratings and operating characteristics. However, they do not identify specific UL or CSA certifications, RoHS or REACH compliance status, or detailed material composition.

Where It Works Best

• Industrial Motor Circuits
• Manufacturing Equipment
• Heavy Industrial Machinery
• Industrial Control Panels
• Commercial Electrical Distribution
• High-Current Electrical Systems
• Motor-Driven Production Equipment