Belimo LRB24-3 Actuator

The Belimo LRB24-3 is a high-performance non-spring return actuator engineered for precise control in HVAC applications. Delivering 45 in-lb of torque, this 24V AC/DC unit is designed for On/Off and Floating (3-point) control of dampers and valve assemblies. As a direct LRB24-3 replacement for discontinued models like the LR24, LR24-1, and LRX24-3, it ensures seamless integration into existing systems. The actuator features a brushless DC motor controlled by an Application Specific Integrated Circuit (ASIC), providing constant run time regardless of load. With a 90-second run time and an external push-button for manual override, it allows for efficient commissioning and troubleshooting. The NEMA 2 rated enclosure and UL Type 2 protection ensure durability in demanding environments, while the reversible mounting bracket facilitates flexible clockwise or counter-clockwise installation.

• Universal Compatibility: Serves as the primary Belimo LRB24-3 replacement for older LR series actuators, simplifying field retrofits.
• Precision Control: Utilizes floating control logic for accurate 3-point positioning, optimizing airflow and hydronic balancing.
• Low Power Consumption: Consumes only 1.5W during operation and 0.2W in standby, reducing total transformer sizing requirements.
• Robust Field Reliability: Equipped with electronic overload protection to prevent motor burnout and ensure consistent 45 in-lb torque delivery.
• Efficiency in Installation: The standard 1/2-inch cold-pressed universal shaft clamp provides a secure, slip-free connection to damper shafts.

Is the Belimo LRB24-3 a spring return actuator?
No, this is a non-spring return motor actuator. It maintains its last position upon loss of power and does not provide a mechanical fail-safe return.

Can I use this for both On/Off and Floating control?
Yes, the LRB24-3 is dual-capable. It can be wired for standard On/Off operation or used with a 3-point controller for floating applications.

What size damper can this actuator handle?
Ideally, this 45 in-lb actuator is rated for dampers up to approximately 11 square feet, depending on the damper’s torque requirements and air velocity.

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.