Overview
The Belimo LF24-SR US is a direct-coupled, spring-return damper actuator engineered for precise modulating control in commercial and industrial HVAC applications. Delivering 35 in-lb of torque and accepting a 2–10 Vdc control signal, this actuator provides dependable fail-safe operation — automatically returning to its spring position upon loss of power to protect system integrity and occupant safety.
Key Features
- 35 in-lb (4 Nm) torque output for reliable damper control
- Spring-return fail-safe design — returns to home position on power loss
- Direct-coupled mounting — no crank arm or linkage required
- 2–10 Vdc modulating control signal for precise positioning
- 24 Vac/dc power supply for broad system compatibility
- Compact, lightweight design for fast, straightforward installation
- UL listed and cULus approved for North American applications
Specifications
- Brand: Belimo
- SKU: LF24-SR US
- Torque: 35 in-lb (4 Nm)
- Control Signal: 2–10 Vdc modulating
- Power Supply: 24 Vac/dc
- Actuator Type: Spring-return, direct-coupled
- Mounting: Direct shaft coupling — no linkage required
Applications
- VAV and CAV air handling systems
- Modulating damper control in commercial HVAC
- Building automation and energy management systems
- Ventilation and air distribution control
