Overview
The Belimo LF24-SR-E US is a spring-return modulating damper actuator designed for fail-safe performance in economizers and air handling systems.
Features
- Spring-return fail-safe action returns damper to home position on power loss
- ASIC-controlled brushless DC motor provides consistent rotation rate
- Graduated visual indicator displays angle of rotation from 0° to 95°
- Direct coupling design simplifies installation on damper shafts
Specifications
- Torque: 35 in-lb [4 Nm]
- Nominal Voltage: AC/DC 24 V
- Control Signal: 2-10 V DC modulating
- Running Time: 150 s (Motor), < 25 s (Spring Return)
- Power Consumption: 5 VA
Applications
- Modulating fail-safe control in HVAC economizer units
- Air volume modulation and ventilation damper positioning



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