Description
The Belimo LRB120-3 is a reliable, non-spring return rotary actuator engineered for precise damper control in commercial and industrial HVAC applications. Designed to deliver consistent 45 in-lb of torque, this actuator operates on a 120 VAC power supply and supports On/Off and Floating point control modes, making it a versatile solution for a wide range of air handling and ventilation systems.
Built on Belimo’s trusted LRB-series platform, the LRB120-3 offers straightforward installation with a universal shaft clamp that accommodates a variety of damper shaft sizes. Its non-spring return design means the actuator holds its last position upon power loss, making it ideal for applications where fail-in-place operation is required.
Key Features
- Non-spring return operation — holds last position on power loss
- 45 in-lb nominal torque output for reliable damper actuation
- On/Off and Floating point control modes
- 120 VAC power supply
- Universal shaft clamp for easy installation on multiple shaft sizes
- Compact, rugged housing suitable for commercial HVAC environments
- Manual override for commissioning and service convenience
- Belimo quality construction for long service life and low maintenance
Specifications
- Brand: Belimo
- Model / SKU: LRB120-3
- Torque: 45 in-lb
- Supply Voltage: 120 VAC
- Control Type: On/Off / Floating Point
- Spring Return: No (Non-Spring Return)
- Actuator Type: Rotary
Applications
- Commercial air handling units (AHUs)
- Ventilation and exhaust damper control
- Building automation and HVAC zoning systems
- Economizer and outside air damper applications
- Fan coil unit damper control
