High Speed Semiconductor Fuses, 350 Fuse Amps, Nonindicating, A50QS Series, 500VAC/DC Voltage Rating, Fast Acting, No UL Class Class, Single Element, Fiberglass Body Material, Nonrejection, Body Style Bolt On, Interrupt Rating 200kA at 500VAC, 87kA at 500VDC, Length 43/8 In., Diameter 11/2 In., Functionally Equal To Bussmann FWH, Littelfuse L50S, Standards CE, UL Recognized, Guide JFHR2, File 60314, CSA Certified LR12636 Also known as -MERSEN A50QS3504 Semiconductor Fuse, 350 Amps, 500V, A50QS