Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3TH20 40-0AN1 found under Relay Electromagnet by Siemens Corp. The National Stock Number assigned to this part is 5945123460179, and the Federal Supply Class is 5945 Relays And Solenoids. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3TH20 40-0AN1.