Siemens 3SU1401-1BC40-1AA0 is a 22 mm LED lamp module designed for front-plate mounting as a green pilot indicator, rated for 110 V AC operation. It includes an integrated LED (no external transformer) and provides a screw-terminal connection for direct wiring to control panels or machine enclosures. This compact 22 mm LED module fits standard front-plate cutouts, delivering a clear, immediate status signal on Siemens automation and control equipment.
