Electric Fuse, 390A, 2400VAC, 50000A (IR), Inline/holder
COOPER BUSSMANN JCK-B-18R Fuse, 390A, Class R-Rated, JCK, 2540VAC. More details: Fuse, 390 Fuse Amps, Indicating, JCK Series, 2540VAC Voltage Rating, Time Delay, R-Rated Class, Dual Element, Body Material Fiberglass, Non-Rejection, Body Style Bolt-On, Interrupt Rating 80kA (Asym.) 50kA (Sym.), Length 14-3/16 In., Diameter 3 In., Standards UL Recognized (Guide MSSS2, File E96676)