Part identity and coil voltage
The Siemens 3RH2140-2AB00-ZW97 is a SIRIUS auxiliary contactor in size S00, carrying 4 NO instantaneous contacts. Coil is rated 24 V at both 50 Hz and 60 Hz — confirm your control voltage matches that before committing the BOM line.
The mounting position allows ±180° rotation on a vertical surface and can be tilted forward/backward ±22.5° on a vertical surface. Clearance: 10 mm upward, 10 mm forward, 10 mm downward, 6 mm at the side — plan your panel layout around those gaps.