Bussmann KTK-R-1/2 is a low-voltage, current-limiting fuse designed for protecting control circuits, transformers, and small motors. It is rated for 600V AC/DC systems with a 1A current rating and features a fast-acting, 200kA interrupting rating at 600V for reliable short-circuit protection. The fuse is constructed as a single-barrel, 1/2 x 1-1/2 inch device with a 0.41-inch diameter, meeting the compact CC class physical dimensions. It is certified to UL 248-4, CSA Class 1422-02, and CE standards, ensuring compliance for industrial use in panelboards, control cabinets, and motor starter applications.