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Datasheet generated 2026-10-08
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Danfoss TWA-K electrothermal actuator, 230 V AC, NC with end-switch (088H3105)

Danfoss · HVAC & Refrigeration · Valve Actuators · Denmark · danfoss.com
Part Number
088H3105  ·  HS 8481.90
Danfoss TWA-K electrothermal actuator, 230 V AC, NC with end-switch (088H3105)

Danfoss TWA-K electrothermal (thermal-wax) valve actuator, OEM order code 088H3105. The TWA-K 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. M 30 x 1.5 threaded connection; fits valve bodies and manifolds with the standard M 30 x 1.5 valve thread. 0.95 m connecting cable. Enclosure rating IP41. Integral end-switch for open/closed feedback. Net weight 0.136 Kilogram. Genuine Danfoss part; technical data quoted verbatim from store.danfoss.com (code 088H3105). OEM P/N 088H3105, EAN 5702425123429.

Technical Specifications

BrandDanfoss
Part number088H3105
TypeTWA-K
Product groupThermal actuators
DescriptionTWA-K 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
ConnectionM 30 x 1.5
Connection typeM 30 x 1.5
Cable length0.95 m
IP protection classIP41
REACH candidate-list substancesLead (CAS no. 7439-92-1)
Net weight0.136 Kilogram
Gross weight0.136 Kilogram
EAN5702425123429
HS code8481.90 (parts of taps, cocks, valves and similar appliances)

Properties

MaterialPolyamide housing
IP ratingIP41
Thread standardM 30 x 1.5
MOQ1

Compatibility

Electrothermal actuator for valve bodies and manifolds with the standard M 30 x 1.5 valve thread. 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 (M 30 x 1.5) against the manifold or valve body before ordering.

Attached Documents