Description
The Belimo SM24A-MOD is a heavy-duty, 24-volt non-spring return rotary actuator engineered for reliable modulating damper control in commercial and industrial HVAC systems. Delivering 180 in-lb of torque, this actuator is built to handle large damper assemblies and demanding applications where precise, repeatable positioning is critical.
Key Features
- 24V AC/DC operating voltage for broad system compatibility
- 180 in-lb (20 Nm) torque output for large damper applications
- Modulating (MOD) control signal for precise positioning
- Non-spring return operation for energy-efficient control
- Compact, rugged housing designed for long service life
- Manual override for commissioning and emergency operation
- Accepts 0–10 VDC or 2–10 VDC control signal (modulating)
- Visual position indicator for easy field verification
- Auxiliary switch output available for system feedback
Typical Applications
- Large commercial HVAC air handling units (AHUs)
- Outdoor air, return air, and exhaust dampers
- VAV and mixed-air control systems
- Building automation and energy management systems
Why Choose Belimo
Belimo is a globally recognized leader in actuator and valve technology for HVAC applications. The SM24A-MOD is manufactured to Belimo’s exacting quality standards, ensuring dependable performance, easy installation, and long-term reliability in commercial building environments. The modulating control capability allows integration with virtually any modern building automation system (BAS) or direct digital control (DDC) platform.
Installation Notes
- Direct-coupled design mounts directly to damper shaft — no crank arm or linkage required
- Suitable for shafts up to 1″ (25 mm) diameter with included hardware
- UL listed for safe installation in commercial HVAC systems
- Designed for indoor use in standard HVAC environments
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