You know you have chosen the right electronic fuse when you choose a fuse from Mersen/Ferraz Shawmut. With time delay fuse speed, 600A fuse amps, an interrupt rating of 200kA at 600VAC, 20kA at 600VDC, and trs-r series, this fuse is a must-have. The voltage rating is 600vac/dc. It has a dual element. Functionally equal to Bussmann FRS-R, Littlefuse FLSR, you'll thoroughly enjoy its use. As far as size goes, it is 3-1/8" in diameter. When it comes to product classification, this item can be grouped as RK5. It is a nonindicating fuse. The body is made of polyester material. Standards include: UL, CSA.