Overview
The Belimo AFRX24-SR is a proportional spring return actuator designed for fail-safe, modulating control of dampers and control valves in HVAC installations.
Features
- Robust spring return mechanism ensures reliable fail-safe positioning on power loss
- Proportional control responding to 2 to 10 VDC input signals
- Low power consumption with brushless DC motor technology
- Manual override crank for quick positioning without electrical power
Specifications
- Torque: 180 in-lb [20 Nm]
- Nominal Voltage: AC/DC 24 V
- Control Signal: Proportional (2 to 10 VDC)
- Actuator Type: Spring Return
- Power Consumption: 7.5 W operating, 3 W holding
Applications
- Emergency fail-safe positioning for supply and return air dampers
- Proportional fluid flow regulation in large heating and cooling systems



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