Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AM3 A3A3A16 40 2 found under Circuit Breaker by Eaton Corporation. The National Stock Number assigned to this part is 5925011444556, and the Federal Supply Class is 5925 Circuit Breakers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AM3 A3A3A16 40 2.