The hassle of frequently changing fuses will be reduced with a fuse from Bussmann. With time delay fuse speed, 80A fuse amps, an interrupt rating of 200kA at 250VAC, 20kA at 125VDC, and frn-r series, this fuse is a must-have. When it comes to product classification, this item can be grouped as RK5. The voltage rating is 250vac/125vdc. The body is made of fiberglass material. It has a dual element. Functionally equal to Mersen/Ferraz Shawmut TR-R, Littlefuse FLNR, you'll thoroughly enjoy its use. It is a nonindicating fuse. As far as size goes, it is 1-1/16" in diameter. Standards include: CE, UL 248-12 Guide JDDZ, CSA Certification Class 1422-01.