Johnson Controls M9104-AGA-3S Actuator

The Johnson Controls M9104-AGA-3S is a high-performance non-spring return direct coupled actuator engineered for precise control in small to medium-sized damper applications. Operating on 24VAC power, this unit delivers 35 lb-in torque (4 N·m), making it a reliable solution for VAV box control and VVT zone systems. The synchronous motor design ensures a consistent 60-second travel time at 60 Hz, maintaining timing accuracy regardless of the load. This specific model utilizes floating control without timeout, requiring a controller with a defined time-limit function to prevent motor fatigue during stall conditions.

Designed for field efficiency, the M9104-AGA-3S actuator features M3 screw terminals for secure electrical connections and a single-screw coupler that allows direct mounting to 3/8 in. to 1/2 in. round or 3/8 in. square shafts. Its compact NEMA 1 enclosure and 35 dBA noise rating make it suitable for open ceiling environments where quiet operation is essential. A manual gear release enables easy manual positioning during commissioning, while the magnetic clutch protects the gear train from excessive torque. For contractors looking for a Johnson Controls damper actuator 24V replacement or new installation, this unit offers robust performance without the complexity of external linkages.

• Precise Synchronization: Constant rotation speed independent of load variations ensures predictable system response.
• Direct Shaft Mounting: Single-screw coupler reduces labor time and simplifies installation on standard round or square shafts.
• Quiet Operation: Low decibel rating ideal for noise-sensitive commercial office spaces.
• High Cycle Life: Rated for 100,000 full stroke cycles to provide long-term reliability in demanding HVAC environments.
• Compact Footprint: Designed for tight-fitting VAV boxes where mounting space is restricted.

• Does this actuator require a timeout function? Yes, because the AGA model lacks an internal timeout, the VAV or VVT controller must provide a software-based timeout to prevent excessive motor wear at the end of rotation.
• What mounting hardware is included? The package typically includes the actuator, an anti-rotation bracket, and self-drilling sheet metal screws for immediate field installation.
• Is it compatible with triac outputs? When interfacing with controllers using triac outputs, it is technically recommended to add a 4.7k ohm resistor between the Common and CCW terminals to ensure stable signal processing.

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.