Sontheimer ST31 12ZM X84 3 Position Selector Switch

Sontheimer ST31 12ZM X84 3 Position Selector Switch is a 12‑pole, 3‑position cam switch in the ST31 family, designed for front‑mount ZM style with a 22.5 mm center‑hole footprint. The ZM mounting option offers IP65 protection when used with the appropriate enclosure accessories, aligning with the rugged, panel‑mounting intent of Sontheimer’s selector switches. The X84 designation identifies the cam variant used on this model, which indexes through three positions (0, 1, 2) with a 30‑degree step between positions. By default, ST31 selectors provide one contact per position, with configurable options depending on the build. These switches are commonly used for multi‑circuit control in industrial panels and machine controls, including motor switching and general electronic circuit control, where a single knob selects among multiple circuits.