Description
Honeywell ML6174A2010 Non-Spring Return Direct Coupled Damper Actuator
The Honeywell ML6174A2010 is a robust, non-spring return direct coupled damper actuator engineered for reliable HVAC damper control in commercial and light industrial applications. Designed for straightforward direct-shaft mounting, this actuator eliminates the need for linkage hardware, reducing installation time and potential failure points. With multiple control modes and a generous torque output, it is well-suited for a wide range of damper sizes and system configurations.
Key Features
- Non-spring return design — holds last position on power loss
- Direct coupled mounting — no linkage required for fast, secure installation
- On/Off, SPDT, and Floating control modes for flexible system integration
- 70 lb-in torque output for dependable damper operation
- 180-second nominal drive time for smooth, controlled actuation
- Feedback signal available with accessory for position monitoring and BAS integration
- Compatible with 3/8″ to 1/2″ square or round shafts
- 24Vac power supply for compatibility with standard HVAC control systems
Specifications
- Model: ML6174A2010
- Supply Voltage: 24Vac
- Control Type: On/Off, SPDT, Floating
- Torque Output: 70 lb-in
- Nominal Drive Time: 180 seconds
- Shaft Compatibility: 3/8″ – 1/2″ square or round
- Ambient Temperature Range: 20°F to 125°F
- Relative Humidity: 5% to 95% RH (non-condensing)
- Feedback: Available with accessory
- Mounting: Direct coupled, non-spring return
Applications
- Commercial HVAC air handling units
- VAV and constant volume damper control
- Economizer and outdoor air dampers
- Building automation and energy management systems
- Ventilation and exhaust damper control









