Belimo GMX120-3 Actuator Motor

The Belimo GMX120-3 is a heavy-duty, non-spring return rotary actuator designed for high-torque applications in commercial HVAC systems. Delivering a robust 360 in-lb torque, this motor provides reliable operation for large dampers and valve assemblies. It operates on 120V AC and offers flexible control via on/off or floating point signals. Built with a brushless DC motor controlled by an Application Specific Integrated Circuit (ASIC), the GMX120-3 actuator features precise positioning and overload protection without the need for limit switches. Its universal spindle clamp accommodates various shaft sizes, ensuring a secure mechanical connection. The manual override button allows for quick system testing and emergency adjustments, making it a staple for technicians maintaining airflow control and temperature regulation in demanding piping or ducting environments. Ensure your HVAC damper motor meets the necessary run-time requirements, as this unit provides a consistent 150-second motor drive time for stable modulation.

• High Torque Output: Provides 360 in-lb (40 Nm) to manage large area dampers and high-pressure valves.
• Reliable 120V Operation: Plugs directly into standard line voltage, eliminating the need for step-down transformers in specific layouts.
• Internal Overload Protection: Eliminates the risk of motor burnout by detecting torque resistance automatically.
• Simple Installation: Features a universal mounting bracket and easy-to-wire terminal strip for rapid field replacement.
• Manual Override: Includes a push-button gear release for manual positioning during commissioning or maintenance.

What is the typical runtime for the Belimo GMX120-3?
The motor is engineered for a constant 150-second runtime for 95 degrees of rotation, ensuring smooth and predictable control cycles.

Can this actuator be used in multi-unit setups?
Yes, the Belimo GMX120-3 supports parallel actuator wiring for applications requiring synchronized movement across large damper banks.

Is the GMX120-3 a spring-return model?
No, this is a non-spring return actuator. It will maintain its last position upon loss of power unless manually adjusted.

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.