Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 50K0TS-40 found under Fuse Cartridge by Cefco English Electric Of N Y Inc. The National Stock Number assigned to this part is 5920009140832, and the Federal Supply Class is 5920 Fuses Arresters Absorbers And Protector. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 50K0TS-40.