We offer an assembly service for the actuator with the fitting for this product. More information

THIS PRODUCT HAS BEEN REPLACED BY TYPE SFA-S2

Emergency actuator Belimo SF for HVAC dampers or ball valves (e.g. Giacomini R250D with adapter). The actuator is designed for damper sizes up to approx. 4m2. The actuator control is open/close.

Function

In the event of a power interruption, the return spring begins to rotate the actuator to its default position. For example, in the event of a power failure, it closes the damper or ball valve. The same can be achieved in reverse, depending only on the initial position of the damper. The actuator is equipped with two auxiliary contacts. One adjustable and one fixed. This allows signalling of a working angle of 10% or 10-90%.

• The actuator can be manually operated using a locking button and a manual crank. 

Features

• The actuator is protected against overload, no end stops are necessary.
• Simple installation on the damper shaft using a universal bracket.
• Adjustable working angle with mechanical stop.
• The actuator can be equipped with a feedback potentiometer.