Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BR17S401 found under Relay Electromagnet by Microsemi Corp. The National Stock Number assigned to this part is 5945002334450, 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 BR17S401.