The Siemens 3RG7401-7AB00 is a SIMATIC PXO320 K21 retro-reflective photoelectric sensor with a built-in polarisation filter. It runs on DC 10–30 V, switches PNP light-on at up to 150 mA, and detects objects at up to 3 m through the retro-reflector. The housing measures 31 x 20 x 12 mm and terminates in an M8 3-pole connector. IP68 rating means it handles washdown environments without a second thought.
Siemens 3RG7401-7AB00 Retro-Reflective Sensor, EOL Hot
MPN3RG7401-7AB00
End of Life
Siemens SIMATIC PXO320 K21 retro-reflective photoelectric sensor with polarisation filter, DC 10-30V, 3 m range, PNP light-on, 150 mA, M8 3-pole connector, IP68.
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026
Product details
Frequently asked questions
What is the closest pin-compatible alternative?
No official successor is listed for this order code. A direct swap would need the same 31 x 20 x 12 mm housing, M8 3-pole connector, PNP light-on output, and polarisation filter. Without a published cross, verify the replacement physically before committing the BOM line.
MPN
3RG7401-7AB00