Product Overview

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

Technical Data

Supply voltage 24 V (Class II (SELV)) and 230 V (3 A pre-fuse)

Max. inrush current 24 V: 350 mA, 230 V: 250 mA

Frequency 50-60 Hz

Running power consumption 2 W

Spindle travel time ~3 min.

Ambient temperature 0-60° C

Enclosure IP 41

Cable length 1200 mm

Combination overview for Danfoss thermal wax actuator and valves (V) or manifolds (M)

Valve/

manifold

RA-N

(V)

RTD-N

(V)

RA-C

(V)

RA-FN

(V)

RA-G

(V)

RTD-G

(V)

RAV-/8

(V)

VMT-8

(V)

RAVL-6

(V)

FHD

(M)

(m³/H)

0.65 to

1.40

0.65 to

1.40

1.20 to

3.30

0.65 to

1.40

2.06 to

4.75

2.00 to

4.40

1.20 to

3.10

1.50 to

3.10

0.20 to

1.50

0.10 to

1.10

Max. Δ

(Bar)

0.6 0.6 0.6 0.6 0.2* 0.2* 0.8 0.8 0.6 0.6

Actuator

TWA-A TWA-D TWA-A TWA-A TWA-A TWA-D TWA-V TWA-V TWA-L TWA-A

* The RA-G/ RTD-G 25 valve has a max. Δp = 0.16 bar. Consult valve/manifold datasheets for further infor-

mation.

**If the actuator should be an 24 V or 230 V and normally open (NO) or normally closed (NC), depends

mainly of the application, control strategy and the controller connected to the actuator.

Electrical Connection

   

Blue Green

Brown Green

* 24 V Class II transformer (SELV)

** 230 V max. 3 A pre-fuse

Please note: All NC-versions are equipped with a red mounting split on the position indicator to secure

easy valve connection. When mounted this split must be removed for correct operation.

Data Sheet TWA Thermal Wax Actuator