OVERVIEW

The Belimo GM24A-SR is a modulating rotary actuator designed primarily for use in HVAC systems to control dampers, air handling units, and other components. Here are some key features and specifications of the GM24A-SR actuator.

SPECIFICATION

Power Supply: 24 VAC/DC

Control Type: Modulating (0-10 V DC control signal)

Torque: 40 Nm (354 in-lb), suitable for large dampers

Running Time: Approximately 150 seconds (for 90° rotation)

Fail-Safe: No fail-safe function; this actuator requires continuous power to maintain the position.

FEATURES

Power Supply:

Operates on a 24 V AC/DC power supply.

Torque:

High torque capacity, typically around 40 Nm, making it suitable for large dampers up to 8 m² in size.

Control Type:

SR in the model name stands for “Spring Return,” which means the actuator has a spring-return mechanism for safety. If the power fails, it will automatically return to a predefined position.

Modulating Control:

Provides modulating control with a 2-10 V or 4-20 mA input signal. This allows for precise control of damper positions rather than simple on/off operation.