Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number E4 450 116 52 found under Transformer Power by Abb Inc. The National Stock Number assigned to this part is 5950015261810, and the Federal Supply Class is 5950 Coils And Transformers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like E4 450 116 52.