Balluff BNS 542-E4-D12-72-10 is a mechanical cam switch in Balluff’s BNS 72-series, designed as a multi‑position position/limit switch for industrial automation equipment. The D12 designation indicates 12 mm plunger spacing, placing this unit in the 72 mechanical switch family that supports multiple plungers on a common housing. Some configurations include a function indicator (FD or FE) to show status, with FD covering 6–60 V AC/DC and FE covering 90–250 V AC/DC. The Series 72 family offers variants with 2, 3, 4, 5, 6, 8, or 10 plungers, and mounting footprints around 84 x 90 x 87.5 mm for common configurations, making it adaptable to a range of machine layouts.
