Danfoss TWA-A Actuator 24V Normally Closed 088H3110 RA Valve

The Danfoss TWA-A Actuator 088H3110 is a compact thermal wax actuator designed for precise on/off control of Danfoss RA series zone valves in hydronic heating systems. Operating on 24V power with a normally closed configuration, this actuator delivers quiet, energy-efficient performance while helping eliminate water hammer associated with fast-acting motorized valves.

Engineered for reliability and easy installation, the TWA-A actuator features a visual position indicator and low power consumption, making it ideal for residential and commercial hot water heating applications.

Key Features

• 24V thermal wax actuator for Danfoss RA zone valves
• Normally Closed (NC) operation
• Compatible with Danfoss RA2000 and RA-C valves
• Slow-opening thermal actuator reduces water hammer
• Quiet, maintenance-free operation
• Visual valve position indicator
• Low power consumption (2W / 2 VA)
• Compact design for easy installation in tight spaces
• Pre-wired cable connection for simplified setup

Applications

Ideal for:

• Hydronic heating systems
• Radiant floor heating controls
• Hot water radiator systems
• Baseboard and fin tube heating systems
• Zoned HVAC applications

Specifications

• Brand: Danfoss
• Model: 088H3110
• Product Type: TWA-A Thermal Actuator
• Voltage: 24V AC/DC
• Function: Normally Closed (NC)
• Power Consumption: 2W / 2 VA
• Frequency: 50/60 Hz
• Connection Type: RA
• Cable Length: 0.95 m (approx. 3 ft.)
• Protection Class: IP41
• Operating Temperature: 32°F – 140°F (0°C – 60°C)

Why Choose Danfoss TWA-A Actuators

Danfoss thermal actuators are trusted for dependable zone control, silent operation, and long service life. The TWA-A actuator uses thermal wax technology for smooth valve movement, helping improve comfort and system efficiency while reducing mechanical stress on the heating system.