Product Overview

ManualsBrandsDanfoss ManualsHeating SuppliesTWA-A Actuator for RA Zone Valves (24V, Normally Closed)

Application

The TWA is a small actuator for electrical on/off -

controls to activate several types of valves and

floor heating manifolds. The actuator is equipped

with a visual position indicator to show the open

or closed position of the valve. The TWA range

covers actuators for 24 V (SELV) or 230 V supply in

both normally closed (NC) or normally open (NO)

versions (valve positions with no supply voltage

to the actuator), and the 24 V TWA for RA valves

also comes in a NC/S-version with an end-switch.

The TWA can be connected to the RA, RTD, RAVL

and RAV-valves from Danfoss. Furthermore ver-

sions for valves with Heimeier/MNG/Oventrop

M30×1.5 connection are available. Other valves

must be verified individually to ensure correct

valve closing measurement and valve top geom-

etry.

Ordering

Actuator Connection type Supply Voltage Function Order Number

TWA-A RA 24 V AC/DC NC 088H3110

TWA-A RA 24 V AC/DC NO 088H3111

TWA-A RA 230 V AC NC 088H3112

TWA-A RA 230 V AC NO 088H3113

TWA-A RA 24 V AC/DC NC/S* 088H3114

TWA-V RAV/VMT 24 V AC/DC NC 088H3120

TWA-V RAV/VMT 24 V AC/DC NO 088H3121

TWA-V RAV/VMT 230 V AC NC 088H3122

TWA-V RAV/VMT 230 V AC NO 088H3123

TWA-L RAVL 24 V AC/DC NC 088H3130

TWA-L RAVL 24 V AC/DC NO 088H3131

TWA-L RAVL 230 V AC NC 088H3132

TWA-L RAVL 230 V AC NO 088H3133

TWA-K M30x1.5** 24 V AC/DC NC 088H3140

TWA-K M30x1.5** 24 V AC/DC NO 088H3141

TWA-K M30x1.5** 230 V AC NC 088H3142

TWA-K M30x1.5** 230 V AC NO 088H3143

TWA-D RTD 24 V AC/DC NC 088H3150

TWA-D RTD 24 V AC/DC NO 088H3151

TWA-D RTD 230 V AC NC 088H3152

TWA-D RTD 230 V AC NO 088H3153

* With end-switch (end-switch only 24 V~)

** Connection to Heimeier, MNG and Oventrop valves with M30×1.5 connection. Other valves must veri-

fied individually to ensure correct valve closing measurement and valve top geometry (see page 3).

Data Sheet

TWA Thermal Wax Actuator

Summary of content (4 pages)

PAGE 1
Data Sheet TWA Thermal Wax Actuator Application The TWA is a small actuator for electrical on/off controls to activate several types of valves and floor heating manifolds. The actuator is equipped with a visual position indicator to show the open or closed position of the valve.
PAGE 2
Data Sheet Technical Data TWA Thermal Wax Actuator Supply voltage Max. inrush current Frequency Running power consumption Spindle travel time Ambient temperature Enclosure Cable length 24 V (Class II (SELV)) and 230 V (3 A pre-fuse) 24 V: 350 mA, 230 V: 250 mA 50-60 Hz 2W ~3 min. 0-60° C IP 41 1200 mm Combination overview for Danfoss thermal wax actuator and valves (V) or manifolds (M) Valve/ RA-N RTD-N RA-C RA-FN RA-G RTD-G RAV-/8 VMT-8 RAVL-6 FHD manifold (V) (V) (V) (V) (V) (V) (V) (V) (V) (M) 0.
PAGE 3
Data Sheet Dimensions TWA Thermal Wax Actuator TWA-A / RA valves DN d2 D ISO 7/1 RP 3/8 R 3/8 Valve type H, mm L, mm RA-N, RA-FN 92 75 15 RP 1/2 R 1/2 RA-N, RA-FN 92 82 20 RP 3/4 R 3/4 RA-N, RA-FN 97 98 25 RP 1 R1 RA-N, RA-FN 97 125 15 RP 1/2 R 1/2 RA-G 95 96 20 RP 3/4 R 3/4 RA-G 95 107 25 RP 1 R1 RA-G 99 125 D d2 RAV H, mm L, mm 10 TWA-V / RAV valves DN 15 ISO 7/1 RP 1/2 R 1/2 15/8 74 95 20 RP 3/4 R 3/4 20/8 74 106 25 RP 1 R1 25/8 87 125
PAGE 4
Data Sheet TWA Thermal Wax Actuator TWA-D / RTD valves DN 67,8 H 10 d2 D L D d2 ISO 7/1 RP 3/8 R 3/8 Valve type H, mm L, mm RTD-N 83.2 75 15 RP 1/2 R 1/2 RTD-N 83.2 82 20 RP 3/4 R 3/4 RTD-N 88.2 98 25 RP 1 R1 RTD-N 88.2 125 15 RP 1/2 R 1/2 RTD-G 86.2 96 20 RP 3/4 R 3/4 RTD-G 86.2 107 25 RP 1 R1 RTD-G 90.2 125 TWA-K Danfoss A/S Heating Solutions Haarupvaenget 11 8600 Silkeborg Denmark Phone:+45 7488 8000 Fax: +45 7488 8100 Email: heating.solutions@danfoss.