Belimo 24V ac/dc Modulating Damper Actuator 20 Nm SF24A-SR

Belimo SF24A-SR 24V ac/dc Modulating Damper Actuator is a high-precision device intended for adjusting air dampers in ventilation and air conditioning systems within commercial, industrial, and residential buildings. The actuator features a modulating control type that allows varying the damper position based on a control signal ranging from 0 to 10 V DC.

This model provides a motor torque of 20 Nm capable of handling dampers with a maximum area of 4 square meters. It supports a supply voltage of both 24V AC and DC, making it suitable for diverse power environments.

The actuator comes with an emergency spring return function that moves the damper to a safe position in case of power failure, assuring system safety. It is designed with a reversible direction of rotation and a universal spindle clamp that fits damper spindles from 10 mm up to 25.4 mm in diameter, compatible with round or square shafts.

The unit is IP54 rated, protecting it from dust ingress and splashing water, making it reliable for HVAC installations. It operates silently at 40 dBA noise level, minimizing acoustic disturbance. The running time to move fully between positions is 150 seconds, offering controlled adjustment speed.

Its wide operating temperature range from -30°C to 50°C ensures robustness across different climatic conditions. The actuator's angle of rotation is 95 degrees, accommodating most damper applications.

The product carries certifications complying with RoHS, EN, IEC, CE, CSA, and UL standards, indicating adherence to international safety and quality criteria. Operates on 24V AC/DC power supply for flexible application. 20 Nm torque for controlling dampers up to 4 m².

Modulating control type for precise positioning. Emergency spring return functionality enhances safety. Reversible direction of rotation and universal spindle clamp. IP54 rating for protection against dust and water splashes.

Quiet operation with a noise level of 40 dBA. Wide operating temperature range from -30°C to 50°C. Complies with multiple international standards including RoHS and UL.

This actuator is ideal for use in HVAC systems within industrial, commercial, and residential buildings where precise and reliable air damper control is required. Its robust construction and versatile features also support applications in manufacturing facilities and other industrial infrastructures.

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