Description
Belimo LRB24-3-S Non-Spring Return Damper Actuator Overview
The Belimo LRB24-3-S is a robust, non-spring return damper actuator engineered for reliable performance in commercial and industrial HVAC applications. Delivering 45 in-lb of torque, this actuator is designed to handle a wide range of damper sizes and configurations. With support for On/Off and Floating control signals and dual-voltage compatibility at 24Vac and 24Vdc, the LRB24-3-S integrates seamlessly into virtually any building automation or zone control system. The integrated auxiliary switch provides valuable end-position feedback, making it an ideal choice for system monitoring and interlock applications.
Key Features
- Non-spring return design for reliable bi-directional damper control
- 45 in-lb torque output — suitable for medium to large damper assemblies
- On/Off and Floating point control signal compatibility
- Dual voltage operation: 24Vac / 24Vdc
- Integrated auxiliary switch for end-position feedback and interlock wiring
- Compact, direct-coupled mounting — no crank arm or linkage required
- Manual override for commissioning and emergency operation
- Belimo quality construction for long service life and low maintenance
Specifications
- Brand: Belimo
- Model / SKU: LRB24-3-S
- Actuator Type: Non-Spring Return
- Torque: 45 in-lb
- Control Signal: On/Off / Floating Point
- Supply Voltage: 24Vac / 24Vdc
- Auxiliary Switch: Included
Applications
- Commercial HVAC air handling units (AHUs)
- VAV and zone damper control
- Building automation and energy management systems
- Outdoor air, return air, and exhaust damper control
- Industrial ventilation systems







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