The ABB 1SAM201902R1002 is a side-mount auxiliary contact block designed for use with ABB contactors and starters. It's listed under the Contactors and Starters category, specifically as an Auxiliary Contact accessory.
What It Does in the Panel
An auxiliary contact like this one mounts to the side of a contactor or starter to provide additional signal feedback — telling the PLC or control system that the main contacts have closed or opened. It's a common way to get a status signal without adding a separate relay. The side-mount form factor means it clips onto the contactor body, saving DIN-rail space compared to a standalone relay block. For a panel builder, that's one less terminal block and one less wire run back to the I/O rack.
Sourcing Reality
Because 1SAM201902R1002 is a current-production part, there's no last-time-buy window or obsolescence clock to watch.