Overview
The Belimo LF24-S US is a spring-return damper actuator providing reliable on/off fail-safe control for mixed air setpoint and ventilation dampers.
Features
- True spring-return mechanism for guaranteed emergency positioning
- Built-in auxiliary switch for position feedback or interlocking
- Double-insulated electrical construction requiring no ground wire
- Mechanical position indication with graduated scale
Specifications
- Torque: 35 in-lb [4 Nm]
- Nominal Voltage: AC/DC 24 V
- Control Signal: On/Off
- Auxiliary Switch: 1 x SPDT
- Power Consumption: 5 W operating, 2.5 W holding
Applications
- On/Off fail-safe control of air dampers in commercial HVAC systems
- Mixed air setpoint control and economizer dampers



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