Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3S2000AE121A1 found under Exciter Regulator by Ward Leonard Electric Company Inc. The National Stock Number assigned to this part is 6115014481535, and the Federal Supply Class is 6115 Generators And Generator Sets Electrical. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3S2000AE121A1.