Thermal actuator TWA-A NO with Danfoss RA connection and 24 V AC supply voltage 088H3111

Thermal actuator for valves – reliable flow control

This Danfoss TWA-A NO thermal actuator, powered by 24 V AC/DC, is a key component of heating and cooling systems. Designed to work with Danfoss RA, VMT and RAV valves, it provides precise and efficient flow control. Its versatility makes it suitable for both domestic and industrial installations.

Construction and application

The TWA-A NO actuator uses a wax filling to generate the force needed to open and close the valve. Thanks to the normally open (NO) function, the valve remains open in the event of a power failure – which is particularly important in safety systems. A built-in position indicator allows for visual monitoring of the valve status, facilitating diagnostics and servicing. Two-point control signal enables easy integration with various automation systems. A cable length of 1.2 m ensures convenient installation and connection to the controller.

Key features and benefits

• Versatility: Compatible with popular Danfoss RA, VMT and RAV valves – minimizes the need to use different types of actuators in the installation.
• Position indicator: Enables quick identification of the valve status without the need for disassembly or additional measurements. This saves time during servicing and diagnostics.
• Normally open (NO) function: Ensures safe system operation in the event of a power failure – the valve remains open, which may be crucial in applications requiring continuous medium flow.
• Solid construction: Made of high-quality materials, resistant to mechanical damage and the influence of external factors (IP41 protection class).
• Low energy consumption: Power consumption of 7 VA (maximum) and 2 VA (rated) translates into energy savings.
• Simple installation: Compact dimensions (40.5 mm diameter, 62 mm width, 54 mm height) make installation easy even in tight spaces.
• Wide operating temperature range: The ability to operate at an ambient temperature from 0°C to +60°C allows the actuator to be used in various environmental conditions.

The TWA-A NO thermal actuator is a reliable solution for professionals and users looking for an effective way to control the flow of medium in heating and cooling systems. Its solid construction, versatility and ease of installation make it an ideal choice for a variety of applications.