Johnson Controls M9208-GGA-2 Actuator

The Johnson Controls M9208-GGA-2 is a professional-grade spring return direct coupled actuator engineered for precise proportional control in commercial HVAC systems. Delivering a reliable 70 lb-in torque (8 Nm), this unit is designed to drive dampers up to approximately 17.5 square feet, ensuring fail-safe performance during power loss. The microprocessor-controlled brushless DC motor provides a constant 150-second runtime regardless of the load, while the electronic stall detection allows the actuator to be stalled anywhere in its rotation without the need for mechanical end switches. This specific model features a 120-inch plenum-rated cable with an integrated 3/8-inch FMC connector, making it ideal for installation in plenum spaces. It accepts versatile control signals including 0-10VDC, 2-10VDC, and 4-20mA (via the included 500 Ohm resistor), allowing for seamless integration with high-end building automation systems like Metasys.

• Universal Compatibility: Mounts directly to round shafts (5/16" to 5/8") or square shafts (1/4" to 1/2"), eliminating the need for complex linkages.
• Precise Modulation: Advanced proportional damper control ensures accurate positioning for optimal airflow and energy efficiency.
• Enhanced Durability: The brushless DC motor technology significantly extends operational life compared to traditional brushed motors by reducing internal friction and heat.
• Fail-Safe Logic: Mechanical spring return provides rated torque in power-off conditions, protecting your system from freeze-ups or over-pressurization.
• Flexibility: Features a reversible mounting design and a 120-step resolution for high-accuracy HVAC applications.

• What size damper can the M9208-GGA-2 handle? This 70 lb-in actuator is typically rated for dampers up to 17.5 sq. ft., depending on the damper seal type and pressure.
• Can I use a 4-20mA signal with this model? Yes, the M9208-GGA-2 includes a 500 Ohm resistor to convert current signals to the required voltage range.
• Does this actuator require an external end switch to prevent motor burnout? No, it utilizes electronic stall detection to protect the motor by cutting power when a stall is detected throughout the entire rotation.

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.