Belimo LRB24-3-T Actuator

The Belimo LRB24-3-T is a high-torque, non-spring return actuator engineered for precise control of pressure independent characterized control valves (PICCV) and standard ball valves in demanding HVAC environments. Delivering 45 in-lb (5 Nm) torque, this unit offers flexible On/Off or Floating point control, operating on 24VAC or 24VDC power supplies. Built for long-term field reliability, the LRB24-3-T actuator features a brushless DC motor controlled by an Application Specific Integrated Circuit (ASIC) and is microprocessor controlled to provide constant torque throughout its 95° rotation. The screw terminal strip connection simplifies high-density wiring for contractors, while the manual override button and visual position indicator allow for rapid mechanical commissioning. Its NEMA 2 (IP54) rating ensures protection against drip and dust, making it an ideal choice for VAV terminal units, fan coils, and small air handlers requiring reliable b-control valve automation.

• Electronic Overload Protection: Eliminates the need for limit switches by automatically stopping the motor at the end of the stroke.
• Consistent Run Time: Maintains a standard 95-second motor run time, ensuring predictable system response across all loops.
• Dual-Voltage Compatibility: Operates on either 24V AC/DC, offering versatility for different control panel specifications.
• Direction of Rotation Switch: External slide switch allows for easy adjustment of clockwise or counter-clockwise operation without re-wiring.
• Maintenance-Free Design: Sealed gear train requires no field lubrication, reducing long-term service calls.

How do I wire the LRB24-3-T for floating control?
Connect terminal 1 (Common) and terminal 2 (+), then use terminal 3 to drive the actuator clockwise or counter-clockwise depending on your controller's output signal.

What is the torque rating and limit of this actuator?
The Belimo LRB24-3-T provides a minimum torque of 45 in-lb and is designed to stop automatically at the valve's physical limit using stall protection technology.

Can I manually adjust the valve position?
Yes, pressing the manual override button on the side of the housing simplifies positioning the valve during power outages or system testing.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.