Bussmann FRN-R-350 - Class RK5 Time-Delay Fuse 350A (250V, 20kA AIC)

The Bussmann FRN-R-350 is a Class RK5 time-delay fuse designed to provide reliable circuit protection for industrial power distribution systems. It features a 350A current rating and 250V voltage rating with an interrupting capacity of 20kA at 250V DC, ensuring robust performance under fault conditions. The fuse construction includes a single-barrel design with a 2.38-inch diameter and 8-5/8-inch length, weighing 1 lb for straightforward installation. It complies with UL 248-12 Guide JDDZ, CSA Certification Class 1422-01, and CE standards, meeting rigorous safety requirements. Typical applications include motor branch circuit protection, feeder circuits, and industrial control panels where time-delay characteristics prevent nuisance tripping during temporary overloads.

Key Features & Specifications

• Type: Class RK5 time-delay fuse, single-barrel construction
• Voltage Rating: 250V AC/DC
• Current Rating: 350A
• Dimensions: 8-5/8 inch length, 2.38 inch diameter
• Standards: UL 248-12 Guide JDDZ, CSA Certification Class 1422-01, CE
• Applications: Motor branch circuits, feeder circuits, industrial control panels
• AIC rating: 20kA@250Vdc
• Class Rating: RK5
• Barrels: 1
• Certification: CE, CSA Certification Class 1422-01, UL 248-12 Guide JDDZ
• Weight: 1 lb

Product Identification

• UPC: 051712507523
• GTIN: 00051712507523