The MDL-4-R is a 4A time-delay fuse in a 1/4" x 1 1/4" glass tube package. It is rated for 250 Vac and features an AC interrupting rating of 200A at 250Vac and 10,000A at 125Vac. Key electrical characteristics include a typical DC cold resistance of 0.038 Ω and a typical melting I²t of 19.3 A²s. This UL Listed and CSA Certified fuse is constructed with a glass tube and nickel-plated brass endcaps, making it suitable for a wide range of electronic circuit protection applications where temporary inrush currents are expected.