Balluff BES023W Inductive Proximity Sensor 3-Wire

Balluff BES023W is a compact inductive proximity sensor in Balluff's BES line, designed for non-contact metal detection in manufacturing and automation environments. Identified in catalogs as BES 517-139-U5-H-S4, the BES023W operates as a three-wire DC proximity switch, delivering a switching output when a metal target enters its sensing field. This model is suited for end-stop positioning, part presence checks on conveyors, and general automation sensing where robust, wear-free sensing is required. The device belongs to Balluff's family of inductive sensors renowned for reliable performance in challenging factory conditions, with a metal-detecting field designed to withstand vibrations and contamination better than contact switches. The BES023W’s form factor and three-wire connection enable straightforward integration with common control systems and logic modules, and Balluff provides a broad ecosystem of mounting accessories and cables to fit panel or inline mounting configurations. For exact electrical characteristics, installation notes, and compatibility details, refer to Balluff’s BES023W specification data corresponding to the catalog entry BES 517-139-U5-H-S4.