M9208-BGC-3G Johnson Controls Actuator

Overview

The Johnson Controls M9208-BGC-3G is an electric spring-return actuator designed to provide control of dampers in HVAC systems. It provides 70 lb-in (8 Nm) of running and spring-return torque, utilizing a mechanical spring-return system to ensure reliable operation with or without applied power. It features two integrated line-voltage auxiliary switches to indicate end-stop positions or perform switching functions.

Features

• Direct-coupled design requires no damper linkage, simplifying installation.
• Reversible mounting allows for easy adaptation to various damper configurations.
• Two integrated line-voltage-capable auxiliary SPDT switches for positional feedback.
• Electronic stall detection monitors motor rotation to prevent damage to the actuator.
• Double-insulated construction eliminates the requirement for an electrical ground.

Specifications

• Torque: 70 lb-in (8 Nm) running and spring-return
• Supply Voltage: 24 VAC at 50/60 Hz or 24 VDC
• Control Signal: On/Off (Two-position)
• Rotation Range: 95 degrees
• Enclosure Rating: NEMA 2 (IP54)
• Operating Temperature: -40 to 140°F (-40 to 60°C)

Applications

• Designed for control of dampers in Heating, Ventilating, and Air Conditioning (HVAC) systems.
• Suitable for direct mounting on standard round or square damper shafts.
• Ideal for building automation systems requiring reliable emergency shutdown or two-position control.