Schneider Electric MF41-6343 DuraDrive Non-Spring Return Electric Damper Actuator

The Schneider Electric MF41-6343 is a heavy-duty DuraDrive™ direct coupled electric damper actuator designed for demanding HVAC applications. This non-spring return (NSR) actuator delivers 300 inch-pounds of torque and operates on 24 VAC/VDC power, making it ideal for controlling large dampers in commercial and industrial air handling systems.

Key Features:

• 300 in-lb (34 Nm) torque output for controlling large dampers and valves
• Floating control (2-position or modulating) accepts tri-state control signals from DDC systems or thermostats
• Non-spring return design maintains position when power is removed
• 24 VAC/VDC dual voltage operation for flexible installation
• NEMA 4 environmental rating when used with supplied gasket and watertight conduit connectors
• Operating temperature range: -22°F to 140°F (-30°C to 60°C)
• Direct coupled mounting for reliable, maintenance-free operation
• Includes 3-foot appliance cable for easy wiring

Applications:

• Air handling unit dampers and inlet vanes
• Variable air volume (VAV) boxes
• Unitary HVAC equipment
• Industrial ventilation systems
• Globe valve control (linkage required separately)

The MF41-6343 is part of the proven MF4 Series DuraDrive actuator line, known for reliability in commercial HVAC control applications. The floating control accepts two-position or modulating signals, allowing precise damper positioning for optimal air flow control and energy efficiency.