Belimo LUB24-3 Damper Actuator 27 In-lb 24V On/off

Product Description

The BELIMO LUB24-3 is a non-spring return damper actuator rated at 27 in-lb of torque, designed for use in commercial and residential HVAC air distribution systems. Operating on 24 VAC or 24 VDC power at 2 VA, it accepts two-position and floating point control signals, making it compatible with standard on/off and tri-state zone controllers. The unit carries an NEMA 2 and IP54 enclosure rating, providing protection against light moisture and dust ingress in typical mechanical room and air handling environments. Licensed HVAC technicians and controls specialists are the primary installers of this component.

The LUB24-3 is suited for damper control applications in variable air volume systems, zone control setups, and air handling units where non-spring return actuation is appropriate. Its floating point control capability allows incremental positioning via open and close pulse signals from a building automation system or standalone zone controller. This actuator is appropriate for both new construction and retrofit installations where direct-coupled damper actuation is required.

Key Features

• 27 in-lb torque output for reliable damper shaft engagement
• Accepts 24 VAC or 24 VDC power supply at 2 VA draw
• Two-position and floating point control signal compatibility
• Non-spring return design holds last position on power loss
• NEMA 2 and IP54 enclosure rating for light moisture and dust protection

Compatibility

Designed as an OEM-style direct-coupled replacement damper actuator for HVAC systems requiring 24V non-spring return actuation with on/off or floating point control.

Installation Notes

Installation should be performed by a licensed HVAC technician or controls specialist familiar with low-voltage wiring practices and applicable mechanical codes. Disconnect and lock out all power to the air handling system before mounting or wiring the actuator. The actuator mounts directly to the damper shaft without additional linkage in most applications; verify shaft size compatibility before installation. Follow all local codes and manufacturer wiring diagrams when connecting control signal and power supply terminals.

Technical Specifications

• Torque: 27 in-lb
• Power Supply: 24 VAC / 24 VDC
• Supply VA: 2 VA
• Control Signal: Two Position, Floating Point
• Enclosure Rating: NEMA 2, IP54
• Spring Return: Non-Spring Return

Standard Information

• Brand: BELIMO
• Manufacturer Part Number: LUB24-3