Belimo AMX120-SR 120V Spring Return Modulating Damper Actuator

The Belimo AMX120-SR is a 120-volt spring return modulating actuator designed for HVAC damper control applications. This actuator provides precise proportional control of damper positioning with automatic spring return to the failsafe position upon power loss, making it ideal for safety-critical applications requiring reliable fail-safe operation.

Key Features:

• 120V AC power supply for standard North American electrical systems
• 180 in-lb (20 Nm) torque output for dampers up to approximately 15 square feet
• Spring return failsafe operation automatically closes or opens damper on power failure
• Modulating control with 2-10 VDC or 4-20 mA control signal input
• 90-degree rotation with adjustable mechanical end stops
• Direct-coupled mounting to damper shaft
• Durable housing suitable for commercial HVAC environments
• Visual position indicator for easy verification of damper position

This actuator is commonly used in commercial building automation systems for control of fire and smoke dampers, outdoor air dampers, and other critical HVAC applications where spring return failsafe operation is required. The modulating control allows for precise positioning throughout the full stroke range, enabling optimal airflow control and energy efficiency.