M9208-BGA-3 Johnson Controls Actuator

Overview

The Johnson Controls M9208-BGA-3 is a reliable, two-position spring return direct-coupled actuator engineered for precise damper control in commercial and light industrial HVAC systems. Designed to operate on both 24 VAC and 24 VDC power supplies, this actuator utilizes a brush DC motor controlled by analog electronics to deliver consistent performance and an automatic fail-safe return upon power loss, making it ideal for critical air-handling and ventilation systems. Its direct-coupled design allows for simple installation without the need for a crankarm or linkage.

Features

• Spring return mechanism provides automatic fail-safe positioning to ensure safety during power loss
• Two-position control allows for straightforward open and close damper operations
• Direct-coupled mounting attaches directly to the damper shaft with a universal clamp, eliminating the need for a linkage
• Electronic stall detection protects the motor from overload at all angles of rotation without requiring mechanical end switches
• Reversible mounting design allows for easy adaptation to either clockwise or counterclockwise operation
• Double-insulated construction removes the need for an additional electrical ground connection
• Integral 3/8-inch flexible metal conduit (FMC) connector simplifies code-compliant wiring

Specifications

• Torque: 70 lb-in (8 N-m)
• Supply Voltage: 24 VAC (19.2 to 28.8 VAC) at 50/60 Hz or 24 VDC (21.6 to 28.8 VDC)
• Power Consumption: 6.1 VA
• Power-On Run Time: 55 to 71 seconds
• Rotation Angle: 95° nominal (stroke degree 90°)
• Wiring Connection: 48-inch (1.2m) appliance cable with 18 AWG conductors
• Enclosure Rating: NEMA 2 (IP54)
• Operating Temperature: -40°F to 140°F (-40°C to 60°C)
• Operating Humidity: 0 to 95% RH, non-condensing
• Compliance: UL listed, CE marked, and C-Tick compliant

Applications

• Commercial HVAC damper control systems
• Air handling units (AHUs) and ventilation systems
• Automated building control and demand ventilation systems
• Fail-safe air-tight damper applications requiring reliable open/close functionality