SIEMENS Electromotoric actuator SFA21/18 AC 230V, 200N, 2.5mm, 2-point, 10s, cable 1.8m

Electromotoric actuators for on/off control of zone. For on/off control of terminal units and heating and cooling zones. The actuators are equipped with a manual lever, spring return facility (NO valve closed) and 1.8 m connecting cable. 1 auxiliary switch is available as an accessory item. For VVI46.. and VXI46.. zone valves, AC 24 V and AC 230 V versions.

• Positioning force 200 N
• Spring return
• Manual adjustment
• For direct mounting with union nut (no tools required)
• Integral 1.8 m connecting cable
• Auxiliary switch, type ASC2.1/18 (optional)
• For Siemens zone valves V..I46..
• Primarily in heating, ventilation, air conditioning and refrigeration systems for waterbased control of low-temperature hot water and cooling water

---

SIEMENS – Electromotoric actuator SFA - Datasheet /en/

---

SIEMENS – Electromotoric actuator SFA - Mounting instruction /en/