The Bussmann BP/FRN‑R‑60 is a dual‑element, time‑delay, Class RK5 fuse designed for demanding industrial electrical systems. With its advanced overload‑handling capability, high interrupt rating, and current‑limiting characteristics, it provides robust protection for motors, power distribution equipment, and machinery subject to heavy inrush currents.

Key Features

• Dual‑element time‑delay design allows temporary overloads (such as motor startup currents) without nuisance opening.
• Time‑delay performance: minimum 10 seconds at 500% of rated current.
• Current‑limiting fuse that reduces damage by restricting fault current intensity.
• High interrupting rating:
  • 200kA AC RMS Symmetrical
  • 20kA DC
• Energy‑efficient, advanced protection as part of Bussmann’s Fusetron RK5 series. 
• Optional open‑fuse indication available in FRN‑R‑60ID versions. 

Specifications

• Current Rating: 60 A 
• Voltage Rating:
  • 250 VAC
  • 125 VDC
• Fuse Class: RK5 (UL Class RK‑5)
• Response Type: Time‑delay (slow‑blow) 
• Dimensions:
  • Diameter: 0.81 in
  • Length: 3 in
• Body Material: Fiberglass 
• Mounting Type: Clip‑mounted / ferrule ends 
• Weight:
  • 3.3 lbs (package weight) 
  • 0.12 lb per fuse (individual unit)
• Agency Approvals:
  • UL Listed, Standard 248‑12, Class RK‑5
  • CSA Certified, C22.2 No. 248.12
  • CE Certified

Applications

The FRN‑R‑60 is widely used in heavy‑duty commercial and industrial environments:

• Power panelboards 
• Motor control centers 
• Combination motor starters 
• Machinery disconnects 
• Circuits with high inrush or temporary overloads (motors, transformers) 
• Protection against:
  • Overloads
  • Ground faults
  • Short circuits