BELIMO LM24A-SR

For HVAC systems demanding precise airflow control in ventilation ducts or air‑handling units, the BELIMO LM24A‑SR actuator offers a highly reliable and streamlined solution. Instead of relying on bulky or separate components, this modulating damper actuator combines high torque (5 Nm) with a standard 24 V AC/DC supply—making installation straightforward in building‑services settings. The 2–10 V input allows smooth proportionate control of damper position, while the 2–10 V feedback signal provides the building automation system direct visibility of the damper’s actual position—valuable for diagnostics and fine‑tuning. With a universal shaft clamp accommodating 6–20 mm damper shafts, it adapts easily to a wide variety of damper sizes. The IP54/NEMA2 rated housing protects against dust and splashes while maintaining compact profile, making it suitable for typical indoor HVAC environments. Manual override push‑button ensures field service access without fully dismounting the unit. Compared to simpler open/close actuators, the LM24A‑SR’s modulating control enhances comfort, energy efficiency and lifecycle performance of HVAC zones. It specifically addresses the challenge of adapting an actuator to existing damper shafts, minimizing wiring complexity by using standard 24 V supply and offering smooth integration into analog or BMS‑controlled environments. For installers and system integrators seeking a professional‑grade actuator for dampers up to ~1 m², this model delivers a flexible, dependable solution with minimal fuss.