Balluff BES-516-357-E5-Y-S4 Inductive Proximity Sensor

Balluff BES-516-357-E5-Y-S4 is a compact cylindrical inductive proximity sensor designed for metal-detection tasks in harsh automation environments, featuring a 4 mm nominal sensing distance and a robust M12 connector (S4) for quick wiring.

It operates from 10 to 30 V DC in a 3‑wire, NPN normally‑open configuration, switching up to 130 mA with a maximum frequency of 400 Hz; no‑load current is typically around 12–25 mA, and the output exhibits a voltage drop near 3.5 V. The sensing end is PA12, the housing is nickel‑plated brass, and the unit is unshielded with a total length of 54.5 mm, mounted via M12x1 threading; it carries IP68 protection and a broad ambient temperature range of -25°C to +70°C, suitable for steel mounting in demanding environments.

Key characteristics include Sn = 4 mm with Sa = 0...3.2 mm, three‑wire DC operation, reverse polarity and short‑circuit protection, and a 24 V‑based operating context typical for Balluff inductive sensors; these specs align with standard industrial automation requirements for presence and position sensing on conveyors, tooling, and robotic setups where ferrous targets are involved.