FRS-R-8 - 8Amp Fuse

FRS-R-8 - 8Amp Fuse

The Eaton Bussmann FRS‑R‑8 fuse delivers premier protection for demanding electrical systems. Built for use in power‑intensive and industrial settings, this 8 amp, Class RK5 dual‑element time‑delay fuse expertly combines current‑limiting technology with extended overload tolerance. With ratings of 600 V AC and 300 V DC and interrupting capacities up to 200,000 amps at 600 V AC and 20,000 amps at 300 V DC, the FRS‑R‑8 safeguards critical equipment such as motors, transformers, HVAC systems, and panelboards from both short‑circuit peaks and sustained overloads. Its ferrule end‑to‑end connection, non‑indicating body style, and standard RK5 form factor (approx. 7.88″ length × 1.11″ diameter) make installation straightforward in existing fuse holders. Whether you’re upgrading protection in a production floor, replacing a fuse in a motor control centre or configuring a branch circuit in a power distribution board, the FRS‑R‑8 supports reliable, efficient performance and helps avoid unwanted downtime.

Key Features and Benefits

• Time‑Delay Dual‑Element Design: Offers approximately 10 seconds of delay at 500% of rated current, accommodating temporary surges without nuisance opening.
• Current‑Limiting Technology: Helps to reduce the energy let‑through during fault events, protecting downstream components and minimizing equipment damage.
• High Interrupting Rating: Rated up to 200 kA at 600 V AC and 20 kA at 300 V DC, offering high fault‑clearing capacity for heavy-duty circuits.
• Standardized Format for Easy Replacement: Ferrule end‑to‑ferrule end connection, non‑indicating body, and a widely used RK5 size make this fuse compatible with many existing holders.
• Quality Construction: Designed for industrial use with durable materials, helping ensure consistent performance and extended service life.

Technical Specifications

• Catalog Number: FRS‑R‑8
  
• Amperage Rating: 8 A
  
• Voltage Rating: 600 V AC / 300 V DC
  
• Interrupting Rating:
  • 200 kA at 600 V AC
  • 20 kA at 300 V DC
• Response Time: ~10 seconds at 500% rated current
  
• Fuse Class: RK5
  
• Connection Type: Ferrule end × ferrule end
  
• Indicating: Non‑indicating body style
  
• Dimensions:
  • Length: Approx. 7.88 inches
  • Diameter: 1.11 inches
• Weight: ~0.4 lb
  

Material Compliance and Certifications

• CE Marked for applicable markets.
• Standards: Complies with UL 248‑12 and CSA C22.2 No. 248.12 standards for Class RK5 fuses.
• Environmental Compliance: RoHS‑compliant for global environmental readiness.
  

Where It Works Best

• The FRS‑R‑8 is ideal for industrial applications that demand high performance and durability: motor control centres, HVAC systems, large transformers, panelboards and branch circuits subject to both short‑circuit stress and overload conditions. If your installation requires a fuse that can handle temporary surges, maintain current‑limiting capabilities, and fit seamlessly into standard RK5 holders, this fuse is a smart choice.