With the Ex 99, the steute business unit Extreme will be presenting a new series of position switches developed especially for Extreme applications and conforming to DIN EN 50041 dimensions. Extreme conditions include use in explosive environments. These new switching devices have therefore been tested and approved in accordance with ATEX and IECEx for use in gas Ex zones 1 and 2, as well as dust Ex zones 21 and 22. A further Extreme criterion is suitability for low temperatures. The Ex 99 series can be used in temperatures down to -60°C, making high demands on design, especially housing construction and sealings. The housings in the new position switches are therefore made out of high-quality fibreglass-reinforced plastic. This material guarantees that even after an impact test at -60°C the high protection class of the switchgear (IP 66) is maintained. As is usual with steute position switches, a wide range of actuators is available for example plungers, roller plungers, roller levers, parallel levers, turning levers, adjustable turning levers and push buttons. Regarding switching inserts, users can choose between different variants with slow-action or snap-action. A function for safety-related applications is a further option.