We recommend you use a fuse from Mersen/Ferraz Shawmut for a fast replacement. With fast acting fuse speed, 3-1/2A fuse amps, an interrupt rating of 200kA at 600VAC, 100kA at 600VDC, and atmr series, this fuse is a must-have. It has a single element. The voltage rating is 600vac/dc. It is a nonindicating fuse. As far as size goes, it is 13/32" in diameter. When it comes to product classification, this item can be grouped as CC. Functionally equal to Bussmann KTK-R, Littelfuse KLKR, you'll thoroughly enjoy its use. The body is made of melamine material. Standards include: UL/CSA. This fuse also meets the following environmental guidelines: RoHS Compliant.