Honeywell ML6174A2010 Non-Spring Return Damper Actuator with Potentiometer 70 lb-in 3-Minute

The Honeywell ML6174A2010 is a 70 lb-in non-spring return direct coupled actuator designed for controlling dampers in HVAC applications such as variable air volume (VAV) terminal units and ball valve mounting. This floating control actuator features an integrated potentiometer for position feedback, making it ideal for building automation systems.

Key Features:

• 70 lb-in torque rating with 130 lb-in maximum stall torque
• 3-minute stroke timing for 90-degree rotation
• 24 VAC power supply with 2.4 VA power consumption
• Floating SPDT control signal type
• Integrated potentiometer option for position feedback
• Selectable rotation: 45°, 60°, or 90° stroke in clockwise or counterclockwise direction
• Manual declutch lever for easy manual operation
• Mounts directly on 3/8 inch to 1/2 inch round or square damper shafts
• AC synchronous motor for consistent timing and long service life
• Operating temperature: 20°F to 125°F (-18°C to 50°C)

The ML6174A2010 eliminates the need for limit switches through magnetic coupling and includes adjustable minimum position setscrews. Suitable for damper applications up to 10 square feet (assuming 3.5 in-lb per square foot). The 3-minute timing makes it ideal for pressure-dependent systems that require slower actuator response. Field-addable auxiliary switches (201052A/B) available separately for additional control integration.