Bussmann FRS-R-250 - Time-Delay Fuse 250A (RK5 Class, 200kA AIC)

Bussmann FRS-R-250 is a Fusetron time-delay fuse designed for comprehensive circuit protection in industrial power systems. This low-voltage fuse features a 250A current rating and 600V voltage rating with a high 200kA interrupting capacity at 600VAC. The fuse construction includes a single-barrel design with 2.34-inch diameter and 11-5/8 inch length, weighing 1 lb, built to RK5 class specifications for time-delay characteristics. It meets UL 248-12 standards under guide JDDZ and carries CSA Certification Class 1422-01 along with CE marking for international compliance. Typical applications include motor branch circuits, feeders, and industrial control panels where reliable overload and short-circuit protection is required.

Key Features & Specifications

• Type: Fusetron time-delay fuse, single barrel, RK5 class
• Voltage Rating: 600V AC
• Current Rating: 250A
• Dimensions: 11-5/8 inch length, 2.34 inch diameter
• Weight: 1 lb
• Standards: UL 248-12 Guide JDDZ, CSA Certification Class 1422-01, CE
• Applications: Motor circuits, industrial control panels, feeder protection
• AIC rating: 200kA@600V
• Class Rating: RK5
• Barrels: 1
• Certification: CE, CSA Certification Class 1422-01, UL 248-12 Guide JDDZ

Product Identification

• UPC: 051712508506
• GTIN: 00051712508506