Bussmann FRN-R-450 - Fusetron Time-Delay Fuse 450A (20kA@250V DC RK5 Class)

Bussmann FRN-R-450 is a Fusetron time-delay fuse designed for circuit protection in industrial electrical systems. It features a 250V AC/DC voltage rating and 450A current capacity with a 20kA interrupting rating at 250V DC for reliable overload protection. The compact RK5-class fuse measures 3" x 0.81" x 0.81" (76.2mm x 20.57mm x 20.57mm) with a 2.88" diameter and 2 lb weight, constructed with a single-barrel design for durability. Compliant with industry safety standards, this Eaton-manufactured fuse is engineered for motor circuits, transformers, and other equipment requiring time-delay protection against short circuits and overloads.

Key Features & Specifications

• Type: Fusetron time-delay fuse (FRN-R), RK5 class
• Voltage Rating: 250V AC/DC
• Current Rating: 450A
• Dimensions: 3" L x 0.81" W x 0.81" H (76.2mm x 20.57mm x 20.57mm)
• Standards: UL/CSA listed
• Applications: Motor circuits, transformers, industrial equipment
• AIC rating: 20kA@250V DC
• Class Rating: RK5
• Barrels: 1
• Diameter: 2.88" (73.15mm)
• Weight: 2 lb (0.91kg)

Product Identification

• UPC: 051712507547
• GTIN: 00051712507547