Overview
The Belimo AFB24-MFT is a heavy-duty spring return damper actuator designed for modulating, floating point, or on/off control in commercial HVAC systems. It provides 180 in-lb of torque to operate large air dampers with emergency fail-safe protection.
Features
- High output torque of 180 in-lb for larger damper applications
- Multi-Function Technology provides versatile, programmable control signal options
- Mechanical spring return mechanism guarantees positive safety positioning
- Low power consumption in holding state for optimal energy efficiency
- Direct mounting on damper shafts with universal clamp assembly
Specifications
- Torque: 180 in-lb [20 Nm]
- Control Signal: Multi-Function Technology (2-10 V, 4-20 mA, On/Off, Floating)
- Supply Voltage: AC/DC 24 V
- Fail-Safe Mode: Spring Return
- Running Time: 95 seconds
Applications
- Control of primary air handling unit dampers
- Modulating airflow regulation in commercial HVAC ductwork
- Critical ventilation systems requiring fail-safe damper positioning



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