Bussmann FRN-R-400 - Fusetron Time-Delay Fuse 400A (RK5 Class 250V)

Bussmann FRN-R-400 is a low-voltage current-limiting fuse designed for comprehensive circuit protection in industrial power distribution systems. It features a 400A current rating and 250V voltage rating with a 20kA interrupting capacity at 250V DC for reliable fault interruption. The fuse construction includes a 2.38-inch diameter single-barrel design measuring 8-5/8 inches in length and weighing 2 pounds, built with RK5 class time-delay characteristics. It complies with UL 248-12, CSA Certification Class 1422-01, and CE standards for safety and performance verification. Typical applications include motor branch circuits, feeder circuits, and industrial control panels requiring coordinated protection.

Key Features & Specifications

• Type: FRN-R Fusetron dual-element time-delay fuse with current-limiting design
• Voltage Rating: 250V AC/DC
• Current Rating: 400A
• Dimensions: 8-5/8 inches length, 2.38 inches diameter
• Standards: UL 248-12 Guide JDDZ, CSA Certification Class 1422-01, CE
• Applications: Motor branch circuits, feeder circuits, industrial control panels
• Class Rating: RK5
• Barrels: 1
• AIC rating: 20kA@250Vdc
• Weight: 2 lb

Product Identification

• UPC: 051712507530
• GTIN: 00051712507530