Belimo ARB24-3 Actuator Motor

The Belimo ARB24-3 is a high-torque, non-spring return rotary actuator designed for precise control of ball valves in HVAC systems. Delivering 180 in-lb of torque, this motor is a reliable choice for field-mounting on B2 and B3 series valves or retrofitting existing installations. It operates on a universal 24VAC/DC power supply and supports both On/Off and Floating Point control signals, providing flexibility for various automation sequences. The brushless DC motor is controlled via an Application Specific Integrated Circuit (ASIC) to ensure constant run time and overload protection across its full 95-degree rotation. Mechanics will appreciate the manual override button and the simple universal clamp that handles 1/2" to 1.05" shafts. With its NEMA 2 (IP54) enclosure and 3-foot rugged cable connection, the ARB24-3 is built for sustained performance in mechanical rooms where moisture and dust are present.

• Constant Torque Output: Provides a consistent 180 in-lb (20 Nm) to ensure reliable valve positioning under varying pressure drops.
• Electronic Overload Protection: Eliminates the need for limit switches, protecting the gear train from damage at the end of rotation.
• Field Flexibility: The direction of rotation is easily reversible with a simple external switch, streamlining the commissioning process.
• Efficient Power Consumption: Consumes only 2.5W during operation and 0.2W in hold mode, maximizing transformer capacity.
• Manual Override: Integrated external push-button allows for manual valve positioning during system testing or power failures.

Can the ARB24-3 be used in proportional 2-10VDC systems?
No, the ARB24-3 is strictly for On/Off or Floating Point control. For proportional 2-10VDC applications, use the ARB24-SR model.

What is the standard runtime for this actuator?
The motor provides a constant runtime of 95 seconds for 90-degree travel, regardless of the load, ensuring predictable system response times.

How do I wire the ARB24-3 for floating control?
Use a three-wire configuration: Connect Terminal 1 (Common) and Terminal 2 (+), then drive the actuator open or closed by pulsed signals to Terminal 3.

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.