Overview
The Belimo AFB24-SR-S is a high-torque spring return damper actuator designed for modulating fail-safe control with built-in auxiliary switching in HVAC applications.
Features
- True spring return operation for positive close-off and fail-safe safety
- Modulating 2 to 10 VDC control signal with matching position feedback
- Microprocessor-controlled brushless DC motor for consistent operation
- Integrated auxiliary switch for position status monitoring
Specifications
- Torque: 180 in-lb [20 Nm]
- Nominal Voltage: AC/DC 24 V
- Control Type: Modulating (2 to 10 VDC)
- Actuator Type: Spring Return with Auxiliary Switch
- Angle of Rotation: 95°
Applications
- Fail-safe modulating damper control in commercial HVAC systems
- Ventilation airflow modulation and auxiliary status signaling



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