Bussmann FRS-R-90 Fusetron® Time Delay Fuse, 600VAC/300VDC 90A Class RK5

Bussmann FRS‑R‑90 Fusetron® is a Class RK5 dual‑element, time‑delay, current‑limiting fuse designed to provide reliable overload and short‑circuit protection for motors, transformers, and branch circuits, allowing inrush currents while delivering high interrupting capacity in industrial and commercial applications. Technical specifications: Manufacturer: Eaton Bussmann Series Manufacturer Part Number: FRS‑R‑90 Product Line: Fusetron® FRS‑R Fuse Class: Class RK5 Fuse Type: Dual‑element, time‑delay, current‑limiting Current Rating: 90 A Voltage Rating AC: 600 VAC Voltage Rating DC: 300 VDC Interrupting Rating AC: 200 kA RMS symmetrical at 600 VAC Interrupting Rating DC: 20 kA at 300 VDC Time‑Delay Characteristic: Designed to withstand motor starting and transformer inrush currents without nuisance opening Number of Elements: Dual Indication: Non‑indicating Connection Type: Blade end x blade end Mounting: Class R fuse holder or fuse block Body Style: Cartridge Body Material: Fiber tube with metal end caps Overall Length: Approx. 9.63 in (244.6 mm) Body Diameter: Approx. 1.61 in (40.9 mm) Weight: Approx. 1.1 lb (0.5 kg) Special Features: Time‑delay overload protection, effective current limitation, economical RK5 design Applications: Motors, motor control centers, transformers, branch circuits, panelboards, industrial power distribution Operating Frequency: 50/60 Hz Standards and Certifications: UL Listed (UL 248‑12, Class RK5), CSA Certified (C22.2 No. 248.12), NEC compliant Quantity Included: 1 fuse Warranty: Not applicable Country of Manufacture: United States Please review pictures carefully and let us know if you have any questions!