Thermoelectric actuator, 4 mm stroke, normally open, 230V, with auxiliary contact MT4-230S-NO

Thermoelectric actuator for precise regulation

This thermoelectric actuator with a 4 mm stroke is a reliable solution for controlling heating and cooling systems. Designed to work with heating valves, fan coil units, underfloor heating and other devices requiring two-point control. This model features a normally open (NO) function, meaning the valve is closed in the resting state. 230V AC power supply ensures wide compatibility with electrical installations.

Design and application

The actuator uses a wax element that expands when heated, generating linear motion. This simple but effective solution is ideal for room and zone applications. Thanks to the valve adapter (included), installation is quick and easy – no special tools are required. Designed for standard valves with a M30 x 1.5 connection, as well as thermostatic valves and valve inserts. An additional auxiliary contact allows controlling the operation of pumps or fans, expanding the application possibilities. A waterproof housing (IP44) allows mounting in various positions, increasing installation flexibility.

Key features and benefits

• Versatility: ideal for heating and cooling systems – fan coil units, radiators, underfloor heating, chilled ceilings.
• Easy installation: valve adapter included eliminates the need for additional tools.
• Safety: features overvoltage protection for 230V models.
• Position indicator: visual information about the valve status (NO/NC) facilitates diagnostics and servicing.
• Durability: solid construction ensures reliable and long-lasting operation.
• Two-point control signal: enables simple integration with building management systems.
• Long cable: 1 meter long cable provides freedom during installation.
• Warranty: the manufacturer offers a 5-year warranty from the date of production – assurance of reliability and durability!

Additionally, the actuator has a visual indicator showing the valve position and the type of operation (NO or NC). The quiet operation of the device minimizes noise disturbance in the room. Compact dimensions allow installation even in limited spaces.