Belimo AMB24-SR Actuator

The Belimo AMB24-SR is a high-torque rotary actuator designed for precise control of ball valves and dampers in demanding HVACR applications. Delivering 180 in-lb of torque, this unit operates on a 24V AC/DC power supply and utilizes a 2-10 VDC proportional control signal for accurate positioning. Built for reliability in commercial building automation systems, the AMB24-SR features overload protection and does not require limit switches, as it is electronically protected against stalling. Its brushless DC motor ensures consistent performance and long-term operational efficiency. This actuator is specifically engineered for easy field integration and includes a manual override for simplified commissioning and troubleshooting. Whether used for proportional control in hydronic systems or air handling units, the AMB24-SR provides the modulating torque necessary for stable environmental control. Technicians can rely on its NEMA 2 (IP54) housing for protection in standard mechanical room environments.

Technical Benefits

• High Torque Output: Provides 180 in-lb (20 Nm) to handle large HVAC ball valves and dampers without binding.
• Universal Power Compatibility: Runs on 24V AC/DC, simplifying inventory for multiple job site configurations.
• Precision Modulation: Uses a 2-10 VDC control signal to provide linear positioning and feedback.
• Direct Mount Design: Reduces installation time with a universal shaft clamp and an anti-rotation strap.
• Low Power Consumption: Optimized brushless DC technology reduces energy draw during holding and runtime.

Common Questions

Can the AMB24-SR be used for fail-safe applications?
No, this model is a non-spring return actuator. It will maintain its last position upon loss of power. For fail-safe requirements, an electronic or mechanical spring-return model should be specified.

What is the typical runtime for this actuator?
The AMB24-SR runtime is approximately 95 seconds for 95 degrees of rotation, providing stable proportional control without rapid hunting.

Does this unit require a specific mounting orientation?
It can be mounted in any orientation, provided that the NEMA 2 protection is maintained and moisture is not directed into the cable entry points.

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.