Belimo ARB24-SR Actuator

The Belimo ARB24-SR is a high-torque non-spring return actuator engineered for precise control of ball valves and dampers in demanding HVAC applications. Delivering 180 in-lb of torque, this proportional valve actuator operates on a 24VAC/DC power supply and accepts a 2-10 VDC control signal for accurate positioning. Designed for seamless integration into building automation systems (BAS), the ARB24-SR features a brushless DC motor controlled by an Application Specific Integrated Circuit (ASIC), which monitors and adapts the drive to provide consistent torque throughout its 95-degree rotation. The manual override button allows for quick mechanical positioning during system testing or power loss, ensuring field flexibility. This Belimo globe valve actuator replacement is built with a rugged NEMA 2 (IP54) housing, making it a reliable solution for modulating flow control in chilled water, hot water, or steam systems requiring high close-off pressure performance.

• High Torque Output: Provides 180 in-lb (20 Nm) to handle large valve assemblies and high-pressure drops without stalling.
• Precise Modulating Control: Utilizes a 2-10 VDC feedback signal for real-time position monitoring and accurate flow regulation.
• Electronic Overload Protection: Optimized ASIC technology prevents motor burnout by automatically sensing end-of-stroke conditions.
• Simplified Installation: Universal bolt pattern and standard 24V wiring reduce labor time during retrofit or new construction projects.
• Constant Run Time: Maintains a consistent 95-second motor drive time, independent of load, for predictable system response.

Can the ARB24-SR be used on third-party valves?
Yes, this actuator is compatible with various valve bodies when used with the appropriate Belimo linkage kits, though it is primarily designed for B2 and B3 series ball valves.

Does the ARB24-SR return to a fail-safe position on power loss?
No, this is a non-spring return model. It will maintain its last position upon loss of power. For fail-safe requirements, an ARX or AF series actuator should be specified.

What is the maximum ambient temperature rating for this drive?
The unit is rated for operation in ambient temperatures ranging from -22°F to 122°F (-30°C to 50°C).

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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.