The FRS‑R‑20 is a 20‑amp, dual‑element, time‑delay fuse from the Fusetron™ Class RK5 series. Engineered for industrial applications, it offers reliable protection against both overloads and short circuits, particularly in circuits with inrush currents such as motors and transformers.
- Current Rating: 20 A
- Voltage Rating: 600 VAC / 300 VDC
- Interrupting Capacity: 200 kA at 600 VAC; 20 kA at 300 VDC
- Time Delay: Minimum 10 seconds at 500% of rated current
- Construction: Dual‑element, current‑limiting, time‑delay fuse with ferrule end caps
- Dimensions: Approximately 0.81″ (20.6 mm) diameter × 5″ (127 mm) length
- Material: Fibreglass body with nickel‑plated bronze/brass end caps
- Compliance: UL 248‑12, CSA C22.2, CE







