BELIMO SF24A-SR Modulating Spring-Return Damper Actuator (SF Series)

• Power & Voltage: 24 V AC/DC (50/60 Hz), with a power consumption of 5 W during operation and 3 W in rest position.
• Control & Feedback: Modulating control input signal of 0–10 VDC, operating range of 2–10 V, and mechanical position feedback of 2–10 V.
• Torque: 20 Nm (Newton-meters) for both motor and spring-return functions.
• Running Time: 140 to 150 seconds for motor operation, and a rapid emergency spring-return fail-safe time of less than 20 seconds.
• Mechanical Interface: Universal shaft clamp compatible with damper spindles ranging from 10 mm to 25.4 mm.
• Environmental Protection: IP54 enclosure rating (NEMA 2) with a permissible ambient temperature range of -30°C to 50°C.
• Fail-Safe Operation: When power is interrupted, the internal mechanical spring automatically drives the connected air damper back to its designated safe position (either fully open or fully closed depending on mounting orientation).
• Manual Override: Features an integrated locking switch and manual crank that allows for temporary positioning of the damper when the system is unpowered.
• Angle of Rotation: Adjustable up to a maximum angle of 95° using integrated mechanical end stops.
• Maintenance: Overload-protected and completely maintenance-free with a rated service life of at least 60,000 fail-safe positions.

Brand New BELIMO SF24A-SR Actuator. In stock — ships worldwide within 5-10 days.

1-year warranty against manufacturing defects. Contact us for pricing — reply within 24 hours.