Valve Drive Actuator, 12-fold, 230V, MDRC
ABB VAA/S12.230.2.1

Valve Drive Actuator, 12-fold, 230V, MDRC

Product code: VAA/S12.230.2.1
For controlling thermoelectric valve drives in heating/cooling systems at 24...230 V AC. The outputs are protected against short circuits and overload and can be switched via manual push buttons during commissioning.
Price (Excluding GST)


The Valve Drive Actuator VAA/S is a modular installation device in Pro M Design for installation in the distribution board on 35 mm mounting rails. The devices features twelve semiconductor outputs for control of Thermoelectric Valve Drives in heating and cooling systems.

The outputs can be operated at 24...230 V AC.

The outputs are short-circuit and overload protected. The outputs can be directly controlled using the manual buttons. The LEDs on the front of the device signal the status of the outputs. The connection to the KNX Bus is implemented via a bus connection terminal.

The devices do not require an additional auxiliary power supply

Technical Details


  • Bus Voltage: KNX Bus 21...32VDC
  • Bus Current Consumption: 12mA
  • Outputs: 12 x Semiconductor in 4 Groups
  • Output Rated Voltage: 24...230 VAC 50/60Hz
  • Max Current per Output: 160mA Resistive Load
  • Max Inrush Current per Output: 300mA for 2 Minute
  • Max Number of electro-thermal valve drives per output: Based on above current limits



Brand ABB
Technology KNX
Mounting DIN Rail
Input voltage KNX Bus (29VDC)
Outputs 12
IP rating IP20
Mounting Width 8MW
EAN 40 16779 82987
brand ABB

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