Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3RH1131-1BB40 found under Contactor Relay by Siemens Energy And Automation Inc. The National Stock Number assigned to this part is 6110015805014, and the Federal Supply Class is 6110 Electrical Control Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3RH1131-1BB40.