The electrothermal actuator STA321.65/00 from Siemens is designed for use with valves in heating and cooling systems. Its construction ensures quiet and maintenance-free operation, which is crucial for applications requiring minimal disturbance and low operating costs. The actuator is equipped with a preset function that facilitates installation and system preparation without the need for additional adjustments. Thanks to the operating voltage of AC 230 V, this model is ideal for installations where standard mains voltage is available.

Applications

• Control of terminal units on the water side, heating and cooling zones
• Combination with Siemens radiator valves (VDN, VEN, VPD, VPE....)
• Can also be combined with radiator valves from other manufacturers (Heimeier, Cazzaniga, Oventrop M30 x 1.5, Honeywell-Braukmann, and MNG - without the need for an adapter)
• Quick response: The time for opening and closing the valve is optimized for efficient control

Features

• Power supply 230 VAC
• Adjustment time 210 s
• 2-position control
• Without connection cable
• Stroke 6.5 mm
• Valve open without voltage