FLSR050-ID - 50Amp Fuse

FLSR050-ID - 50Amp Fuse

When your circuit needs 50-amp protection but normal startup current shouldn't cause unnecessary fuse operation, the FLSR050-ID is built for the job. This Class RK5 dual-element, time-delay fuse carries a continuous rating of 50A and is designed for systems up to 600VAC and 300VDC.

Key Features and Benefits

• 50A continuous current rating — designed for circuits requiring a 50-amp Class RK5 fuse.
• 600 VAC and 300 VDC ratings provide flexibility across compatible AC and DC applications.
• Dual-element construction combines time-delay performance with overload and short-circuit protection.
• Slo-Blo / time-delay operation helps accommodate normal temporary inrush current from motors, transformers, and similar loads.
• Class RK5 current-limiting fuse design helps reduce the amount of damaging current that can pass during a qualifying fault.
• The built-in indicating function provides a convenient visual aid when checking for an open fuse.
• Industrial cartridge construction fits compatible fuse blocks, clips, and holders.
  

Technical Specifications

• Catalog Number: FLSR050-ID
  
• Manufacturer Catalog Number: FLSR050ID
  
• Series: FLSR_ID
  
• Product Type: Dual-Element Time-Delay Indicating Fuse
  
• Fuse Class: Class RK5
  
• Continuous Current Rating: 50A
  
• Maximum AC Voltage: 600VAC
  
• Maximum DC Voltage: 300VDC
  
• Opening Characteristic: Slo-Blo / Time Lag (T) / Time Delay
  
• AC Interrupting Rating: 200,000A at 600VAC
  
• Additional Manufacturer-Specified AC Interrupt Amperage: 300,000A at 600VAC
  
• DC Interrupting Rating: 20,000A at 300VDC
  
• Construction / Size: Industrial Cartridge
  
• Family Style: Dual Element Fuse
  
• Indicating: Yes
  
• Mounting Method: Fuse Block / Clip / Holder
  
• PG Holder: LFR60060 Series
  

Material Compliance and Certifications

The FLSR050-ID is a Class RK5 fuse designed to meet the electrical performance requirements of this fuse class. Its current-limiting, dual-element construction provides the combination of time-delay operation and fault protection needed in many industrial electrical systems.

For installations requiring specific UL, CSA, RoHS, REACH, environmental, or material-compliance documentation, confirm the current documentation for the exact FLSR050ID catalog number before specification or installation. This avoids assuming that a certification or material declaration applying to a broader product family necessarily applies to every individual catalog number.

Where It Works Best

The FLSR050-ID 50A fuse is especially useful where brief current spikes are expected during normal operation. A motor, for example, can draw considerably more than its running current for a short time during startup. Transformers can produce similar inrush conditions when energized. A properly selected time-delay fuse is designed to account for these normal events rather than treating every brief surge as a sustained overload.

That makes the FLSR050-ID a practical fit for appropriately specified motor branch circuits, motor control equipment, transformers, industrial machinery, feeders, switchboards, service equipment, and general industrial power-distribution circuits requiring Class RK5 protection. The indicating feature is particularly handy in facilities with multiple fused circuits, where quickly locating an open fuse can simplify troubleshooting and maintenance.