FLSR080 - 80Amp Fuse

FLSR080 - 80Amp Fuse

Some electrical loads don't behave politely when they're switched on. Motors and transformers, for example, can draw a brief current surge before settling into normal operation. The FLSR080 is designed for your circuits where such temporary inrush is expected. It's an 80A Class RK5 dual-element fuse with a time-delay response, so an appropriate short startup surge doesn't automatically mean an open fuse. At the same time, it provides overcurrent protection when an overload continues or a short circuit occurs.

Key Features and Benefits

• 80A continuous rating for circuits designed around 80-amp fuse protection.
• Class RK5 dual-element fuse with time-delay operation.
• Handles electrical systems rated up to 600VAC or 300VDC.
• Slo-Blo / time-delay response helps the fuse tolerate appropriate short-lived startup and inrush currents.
• Protects against sustained overloads and short circuits in properly specified applications.
• Knife-blade construction fits the appropriate fuse block, clip, or holder.
• Non-indicating design for applications that don't require visual indication of fuse status.
• Specified with the LFR60100 Series PG holder.
  

Technical Specifications

• Catalog Number: FLSR080
  
• Series: FLSR
  
• Fuse Class: Class RK5
  
• Fuse Style: Dual Element Fuse
  
• Continuous Current Rating: 80A
  
• Maximum AC Voltage: 600VAC
  
• Maximum DC Voltage: 300VDC
  
• Opening: Slo-Blo / Time Lag (T) / Time Delay
  
• AC Interrupt Amperage: 200,000A at 600VAC
  
• Additional Manufacturer-Specified AC Interrupt Amperage: 300,000A at 600VAC
  
• DC Interrupting Rating: 20,000A at 300VDC
  
• Construction: Knife-Blade
  
• Indicating: No
  
• Mounting: Fuse Block / Clip / Holder
  
• PG Holder: LFR60100 Series
  

Material Compliance and Certifications

The FLSR080 is identified as a Class RK5 fuse. Beyond that classification, any certification or material compliance requirement should be verified against the current documentation for this exact catalog number. That's especially important on projects where specific UL, CSA, RoHS, REACH, or other compliance records have to be documented.

Where It Works Best

The FLSR080 is especially useful when a circuit experiences a brief current increase as part of normal operation. A motor starting up is an easy example. Its initial current can be much higher than its normal running current. Transformers can behave similarly when they're first energized. The time-delay characteristic is there to help a properly selected fuse handle those short, expected events rather than reacting to them as though every surge were a sustained overload.

That makes the FLSR080 a natural candidate for properly specified motor circuits, transformers, motor-control equipment, industrial machinery, feeders, switchboards, and power-distribution equipment where an 80A Class RK5 time-delay fuse is required.