What it is and where it fits
The Siemens 3RH2911-1XA22-0MA0-Z W98 is a front-mounted auxiliary switch block delivering 2 normally-open and 2 normally-closed contacts via screw terminals. It mounts directly onto 3RT2 contactors and 3RH2 contactor relays, adding status feedback or control logic to the switching assembly. The multi-unit packaging ships 60 pieces per pack, which is typical for panel builders wiring multiple starters on a single BOM line.
Contact configuration and wiring
The contact arrangement is 2 NO + 2 NC, with the current path sequenced as 1 NO, 1 NC, 1 NC, 1 NO. Terminal designations follow the standard numbering: 53/54, 61/62, 71/72, 83/84. The screw terminals accept solid or ferruled stranded wire — strip length and torque are per the contactor's own terminal specs, so no separate tooling change on the line.