Balluff BES Q40KFU-PAC20A-S04G-W0 Inductive Sensor

Balluff BES Q40KFU-PAC20A-S04G-W0 is a 40 x 40 x 62 mm flush‑mount inductive proximity sensor (factor 1) from Balluff, designed for rugged automation environments where space is at a premium. Housed in PBT with a ceramic-coated sensing surface, it enables flush panel mounting and detects metal targets up to 20 mm away. The sensor offers a PNP switching output in NO/NC configuration and communicates through a 4-pin M12x1 connector. It operates on 10–30 V DC, supports an ambient temperature range of -25 to +70 °C, and carries IP67 protection against dust and water, with immunity to magnetic fields on AC/DC supplies. The compact 40 mm footprint and robust housing are well-suited for end-of-stroke sensing, presence detection on conveyors, and machine-guarding applications where a low-profile sensor is required. The BES0216 family, which encompasses this Q40KFU-PAC20A-S04G-W0 model, reflects Balluff's Factor 1 inductive sensing line and aligns with the BES0457 range of inductive sensors. This part is appropriate when a reliable, non-contact metal-detection solution is needed in tight spaces on automation equipment and control panels.