FRS-R-3 - 3Amp Fuse

FRS-R-3 - 3Amp Fuse

Safeguard your critical electrical systems with the Eaton Bussmann FRS‑R‑3 fuse. Designed for dependable protection in demanding commercial and industrial environments, this Class RK5, 3 A time‑delay fuse handles both short‑circuit events and sustained overloads with ease. With a 600 VAC / 300 VDC rating and interrupting capacity of 200,000 amps at 600 V AC (20,000 amps at 300 V DC), this unit stands ready for high‑fault‐current installations. Its dual‑element, time‑delay construction gives you about 10 seconds of tolerance at five times rated current — perfect for equipment with inrush surge like motors, HVAC systems, and inductive loads. Compact at approximately 5 in long and 0.81 in diameter, the FRS‑R‑3 fits well in tight panel configurations where space and reliability both matter.

Key Features and Benefits

• Dual‑Element Time‑Delay Technology: Offers a built‑in hold‑off for surge peaks during startup (like motors or transformers) and then fast‑acting protection for true overload or short‑circuit situations—reducing nuisance trips and downtime.
• High Interrupting Capacity: Rated for 200 kA at 600 V AC and 20 kA at 300 V DC, this fuse covers extremely demanding fault‐current environments so your downstream gear stays safer.
• Compact Footprint: At just 5 in long and ~0.81 in diameter, it’s space‑efficient and fits standard fork/ferrule end cartridge holders in control panels with tight real estate.
  
• Precise Install Fit: Ferrule end x ferrule end connection makes it easy to install in traditional fuse blocks and simplifies replacement with consistent sizing.

Technical Specifications

• Catalog Number: FRS‑R‑3
  
• Amperage Rating: 3 A
  
• Voltage Rating: 600 VAC / 300 VDC
  
• Interrupting Rating:
  • 200 kA at 600 V AC
  • 20 kA at 300 V DC
• Response Time: 10 seconds at 500% of rated current
  
• Connection Type: Ferrule end × Ferrule end
  
• Fuse Class: Class RK5
  
• Dimensions:
  • Length: 5 inches
  • Diameter: 0.81 inches
• Weight: ~0.14 lb
  
• Indicator: Non‑indicating
  

Material Compliance and Certifications

• UL and CSA Standards: Certified to UL 248‑12 (Class RK5 fuses) and CSA C22.2 No. 248.12 standards, ensuring recognized safety and regulatory compliance.
• CE Marked: CE‑marked to indicate conformity with applicable European directives when used in appropriate environments.
  
• Manufacturing Quality: Manufactured with attention to durability and reliability, in line with modern industrial protection requirements.

Where It Works Best

• The FRS‑R‑3 excels in applications where equipment is subject to brief surge currents at startup, yet requires strong protection against fault conditions. Ideal for motor control centers, HVAC units, lighting and control panels, industrial control cabinets, and other systems with inductive loads. If you’re replacing older non‑time‑delay fuses, this model allows you to size closer to full load amps—thanks to its time‑delay feature—resulting in better overall protection and potentially lower costs in switch and panel sizing.