Balluff BNS 819-D03-R12-100-10-FD Roller Limit Switch

Balluff BNS 819-D03-R12-100-10-FD is a mechanical roller limit switch with three roller positions, providing three discrete switching points along a moving part’s travel for end‑of‑travel and intermediate sensing in automation systems. The unit’s rugged aluminum, anodized housing measures 120 x 80 x 85 mm and houses a snap-contact switching mechanism, enabling reliable mechanical actuation from each roller. Actuation is mechanical—rollers are engaged by the moving part to trigger the corresponding contact, making it well suited for sequencing tasks in conveyors, packaging lines, and machine tools. This FD variant sits within Balluff’s classic BNS mechanical position switch family, delivering a compact, multi‑point solution in a single enclosure to monitor multiple limits along a single stroke.