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Datasheet generated 2026-10-07
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Danfoss TWA-A electrothermal actuator, 230 V AC, NC with end-switch (088H3106)

Danfoss · HVAC & Refrigeration · Valve Actuators · Denmark · danfoss.com
Part Number
088H3106  ·  HS 8481.90
Danfoss TWA-A electrothermal actuator, 230 V AC, NC with end-switch (088H3106)

Danfoss TWA-A electrothermal (thermal-wax) valve actuator, OEM order code 088H3106. The TWA-A converts a switching signal from a room thermostat or controller into valve movement on hydronic floor-heating manifolds and radiator/zone valves — no auxiliary air or hydraulics. Normally closed with auxiliary end-switch (NC/S) — closed when de-energised, opens when powered; the built-in end-switch signals the open/closed position. Supply voltage 230 V AC (50/60 Hz), power consumption 2 W. RA snap-on connection; fits Danfoss RA valve bodies and RA-connection manifold valves. 0.95 m connecting cable. Enclosure rating IP41. Integral end-switch for open/closed feedback. Net weight 0.138 Kilogram. Genuine Danfoss part; technical data quoted verbatim from store.danfoss.com (code 088H3106). OEM P/N 088H3106, EAN 5702425114045.

Technical Specifications

BrandDanfoss
Part number088H3106
TypeTWA-A
Product groupThermal actuators
DescriptionTWA-A NC/S 230V
Actuator principleElectrothermal (thermal wax element)
Valve functionNC/S (with end-switch)
End-switchYes
Supply voltage230 V AC
Frequency range50 Hz – 60 Hz
Power consumption2 W
ConnectionRA
Connection typeRA
Cable length0.95 m
IP protection classIP41
REACH candidate-list substancesLead (CAS no. 7439-92-1)
Net weight0.138 Kilogram
Gross weight0.138 Kilogram
EAN5702425114045
HS code8481.90 (parts of taps, cocks, valves and similar appliances)

Properties

MaterialPolyamide housing
IP ratingIP41
MOQ1

Compatibility

Electrothermal actuator for Danfoss RA valve bodies and RA-connection manifold valves. Signalled by a 24 V or 230 V AC room-thermostat/controller output — match the supply voltage (230 V AC) and valve function (NC with end-switch) to the control system. Confirm the valve connection (RA) against the manifold or valve body before ordering.

Attached Documents