Belimo SRF24A-R - rotary actuator with spring return

Belimo SRF24A-R

RetroFIT+ rotary actuator for rotary valves and dampers. During operation, the actuator moves the valve and tensions the return spring; if the power supply is interrupted, the spring moves the valve to the safety position.

Key features

• Motor and safety function torque: 20 Nm.
• Rated voltage: AC/DC 24 V; rated voltage frequency: 50/60 Hz.
• Control: Open/Close.
• Motor running time: 75 s / 90°; safety function running time: <20 s @ -20...50°C, <60 s @ -30°C.
• Selectable safety function direction: NC — valve closed when power is lost (A–AB = 0%) or NO — valve open when power is lost (A–AB = 100%).
• Power consumption during operation: 5.5 W; in rest position: 1.5 W; sizing power for cable selection: 7.5 VA.
• Power and control connection: 1 m cable, 2x 0.75 mm².
• F03/F04/F05 connection flange; manual adjustment using a crank and locking switch.
• Mechanical position indicator and adjustable rotation angle with mechanical stops.
• IEC/EN degree of protection: IP54.

The stem shape adapter is not included in the scope of delivery.