Control Stations with Pushbutton - Plastic The 3SB3 range of enclosures come with standard fittings. These control stations are grey plastic and are equipped with actuators and indicators made of plastic. Plastic enclosure with an ingress protection of IP65 Vertical mounting type Contact blocks for floor mounting (are snapped into the enclosure base) Cable entry on the top and bottom 1 x M20 each Mounting diameter 22mm Siemens