What this sensor is and where it fits
The TELEMECANIQUE XS508B1PBM8 is a cylindrical inductive proximity sensor from the XS5 series, with an M8 threaded body, shielded sensing face, and a PNP NC output. It's built for tight spots on machine tools, grippers, or small-assembly stations where you need an 8 mm form factor and 2 mm sensing distance to ferrous targets. The stainless steel body (grade 303) and nickel-plated finish hold up in wet or dusty zones—IP65/IP67 seals handle washdown cycles.
Key ratings worth sorting
Shielded flush-mount construction allows embedding in metal. 2 mm max sensing distance, PNP NC at 200 mA over 12–24 V DC with built-in protection.
Pulling the peer into the conversation
If your BOM has XS9E11RPBL01M12 and you're looking for a functional second-source, this XS508B1PBM8 won't drop in without changes. The XS9 is a rectangular plastic block with a 10 mm sensing distance and an M12 remote connector; the XS5 is an M8 cylindrical stainless steel sensor with 2 mm sensing distance and an M8 connector. Same PNP NC logic, same 200 mA max load (the XS9 datasheet says 100 mA), but the housing, mounting hole, and connector size are different. For a new design or a panel where you can adapt the bracket and cable, it's a candidate. For a drop-in swap, you'll need the original XS9.