COOPER BUSSMANN JJS-50 Fuse, 50A, Class T, JJS, 600VAC. More details: Fuse, 50 Fuse Amps, Nonindicating, JJS Series, 600VAC Voltage Rating, Fast Acting, Class T, Single Element, Body Material Melamine, Nonrejection, Cylindrical Body Style, Interrupt Rating 200kA at 600VAC, Length 1-1/2 In., Diameter 13/16 In., Functionally Equal To Ferraz/Gould AGT, Littlefuse JLLS, Standards CE/UL-248-15 Guide JDDZ/CSA Class 1422-02