Description

The Valve Drive Actuators VAA/S are modular installation devices in Pro M design for mounting on 35 mm mounting rails in the distribution board. Thermoelectric valve drives in heating and cooling systems are controlled by the devices, which have six or twelve semiconductor outputs. The outputs may run on 24 to 230 V AC. Short-circuit and overload protection is built-in, where the manual buttons can be used to control the outputs directly. The output status is shown by the LEDs on the device's front panel.