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Datasheet generated 2026-10-07
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Danfoss TWA-A electrothermal actuator, RA connection, 230 V AC, normally closed, 1.15 m cable (088H3250)

Danfoss · HVAC & Refrigeration · Valve Actuators · Denmark · danfoss.com
Part Number
088H3250  ·  HS 8481.90
Danfoss TWA-A electrothermal actuator, RA connection, 230 V AC, normally closed, 1.15 m cable (088H3250)

Danfoss TWA-A electrothermal (thermal-wax) valve actuator, OEM order code 088H3250. 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 (NC) — the valve is closed when de-energised and opens when the actuator is powered. Supply voltage 230 V AC (50/60 Hz), power consumption 2 W. RA connection. 1.15 m connecting cable. Enclosure rating IP41. Net weight 0.13 Kilogram. Genuine Danfoss part; technical data quoted verbatim from store.danfoss.com (code 088H3250). OEM P/N 088H3250.

Technical Specifications

BrandDanfoss
Part number088H3250
TypeTWA-A
Product groupThermal actuators
DescriptionTWA-A NC 230V, 1.15 m cable
Actuator principleElectrothermal (thermal wax element)
Valve functionNC
End-switchNo
Supply voltage230 V AC
Frequency range50 Hz – 60 Hz
Power consumption2 W
Connection sizeRA
Cable length1.15 m
IP protection classIP41
REACH candidate-list substancesLead (CAS no. 7439-92-1)
Net weight0.13 Kilogram
Gross weight0.132 Kilogram
HS code8481.90 (parts of taps, cocks, valves and similar appliances)
Cable length [m]1.15 m
China RoHS complianceOut of scope
Connection typeRA
EU RoHS complianceYes with exemptions
EU RoHS exemption clause6(c)
Frequency range [Hz] [Max]60 Hz
Frequency range [Hz] [Min]50 Hz
Power consumption [W]2 W
Supply voltage [V] AC230 V
UNSPSC CODE40101801

Properties

MaterialPolyamide housing
IP ratingIP41
MOQ1

Compatibility

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

Attached Documents