Siemens STA63 Electrothermal Actuator - PIR Sensors

Electrothermal actuators are Robust, maintenance-free and noise-free for radiator valves, small valves and PICV. The actuator stem retracts and the radiator valve is opened by the spring. The position of the stem is proportional to the DC 0…10 V positioning signal. The actuator stem extends when de-energized and the radiator valve is closed. The actuator deploys to the 50% stroke position if the positioning signal is lost when applying operating voltage. DC 0…10 V actuators support various operation modes, see also under DIPSwitch settings