Belimo ARB24-SR-T Actuator

The Belimo ARB24-SR-T is a high-torque non-spring return rotary actuator designed for the precise modulation of ball valves in HVAC systems. Providing 180 in-lb of torque, this unit operates on a 24V AC/DC power supply and responds to a 2-10 VDC control signal, ensuring accurate positioning for flow control applications. The "T" designation signifies the inclusion of a screw terminal strip, which simplifies field wiring for contractors and reduces installation time compared to lead-wire models. Engineered for reliability, the ARB series features a brushless DC motor controlled by an Application Specific Integrated Circuit (ASIC) for consistent performance and overload protection. This actuator is compatible with specific Belimo B2 and B3 series valves ranging from 1/2" to 2", making it a staple for building automation upgrades. Its 95-degree rotation and manual override capability allow for easy commissioning and mechanical adjustment during system maintenance or power loss scenarios.

• 180 in-lb Torque Output: Delivers sufficient force for high-differential pressure applications in large-bore valve assemblies.
• Proportional 2-10 VDC Control: Provides high-resolution modulation for optimal temperature stability and energy efficiency.
• Terminal Block Connection: Simplifies the wiring process, allowing for direct electrical termination without additional junction boxes.
• Brushless DC Motor: Professional-grade motor technology ensures long-term operational life and precise positioning without the need for limit switches.
• NEMA 2 / IP54 Protection: Durable housing designed to withstand standard mechanical room environments and light moisture.

What is the typical runtime for the ARB24-SR-T?
The standard motor runtime is 90 seconds for a full 90-degree stroke, providing stable control and preventing water hammer in piping systems.

Can this actuator be used on both 2-way and 3-way valves?
Yes, the Belimo ARB24-SR-T is compatible with both 2-way and 3-way Belimo B2/B3 series ball valves using the appropriate linkage kit.

What happens if the control signal fails?
As a non-spring return actuator, the unit will remain in its last position upon loss of control signal, unless configured otherwise via the control logic.

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.