On-off electric actuator with 90° rotation ATEX. The actuator is equipped with 4 limit switches, where 2 are potential free and 2 are used for protection of the motor. Torque switches are available for actuators with torque value from 150 Nm and up. It has optical position indicators, hand wheel for manual operation and a built-in heating element. Protection class IP 67. Mounting flange in accordance with ISO 5211 - DIN3337.