Thermostatic actuator ENGO E28NC2-30, M28x1.5, NC (normally closed), black, 230V, 932211572

Thermoelectric actuators for underfloor heating – reliable control of thermal comfort

The ENGO E28NC2-30 thermoelectric actuator is a component designed for precise control of the heating medium flow in underfloor heating installations. It will work both with valve inserts and zone valves, offering flexibility in system construction and configuration. The device is characterized by low power consumption – only 2 VA – which translates into energy savings. Solid construction and high quality workmanship guarantee long-lasting and trouble-free operation.

Functionality and application

The E28NC2-30 actuator operates in normally closed (NC) mode, which means that the heating medium flow is open by default. Opening or closing the flow occurs after receiving a control signal, allowing precise temperature regulation in individual heating zones. It can work directly with the controller or via a control strip, providing a high degree of freedom in choosing the control system. Thanks to the FIRST OPEN function, the initial installation is much easier – the actuator immediately opens the flow after connecting the power supply.

Design features and operating parameters

The actuator design was created with ease of installation and reliability in mind. Compact dimensions (diameter 45 mm, height 65 mm) allow installation even in tight spaces. Made of high-quality materials, resistant to external factors (IP54 protection class) and maintains stable operating parameters in a wide range of ambient temperatures (-25°C to 60°C). It has a position indicator that facilitates visual control of the actuator status. The stroke length is 4.5 mm and the cycle time is 120 seconds. The power supply is 230 V AC, and a two-point control signal is used for connection. The cable length is 0.9 m and the connection thread is M28x1,5.