Damper Actuators

Damper actuators are air management accessories. These are devices that stop or regulate the flow of air inside a duct, chimney, VAV box or other air-handling equipment. They’re commonly used in heating, ventilation and air conditioning (HVAC) systems.

How do damper actuators work?
A damper actuator requires a control signal and a source of energy, typically an electrical current, hydraulic fluid pressure or pneumatic pressure. They then convert that energy into motion.
Damper actuators may be used to cut off central air conditioning (heating or cooling) to an unused room, or to regulate it for room-by-room temperature and climate control. This in turn helps you to save on energy and energy bills.

Types of damper actuators
There are two types of damper actuators: modulating and open/close.

  • A modulating damper actuator will position, or throttle, the damper or valve to achieve a desired position or flow.
  • An open/close damper actuator produces a two-position response (0% open or 100% open).
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Part Details Brand Maximum Damper Area Damper Spindle Compatibility Switch Included Power Consumption Control Type Supply Voltage Motor Torque Noise Level Maximum Damper Spindle Size Minimum Damper Spindle Size
Open/Close Damper Actuator, 20Nm, 240 V ac Belimo 4m² 10 → 20mm - 2.5W Open/Close 240 V ac 20Nm 45dB(A) 20mm 10mm
Modulating Damper Actuator, 20Nm, 24 V ac/dc Belimo 4m² 10 → 20mm - 2W Modulating 24 V ac/dc 20Nm 45dB(A) 20mm 10mm
Modulating Damper Actuator, 10Nm, 24 V ac/dc Belimo 2m² 8 → 20 mm, 8 → 26.7 mm Yes 2W Modulating 24 V ac/dc 10Nm 35dB 20 mm, 26.7 mm 8mm
Open/Close Damper Actuator, 20Nm, 24 V ac/dc Belimo 4m² 10 → 20mm - 2W Open/Close 24 V ac/dc 20Nm 45dB(A) 20mm 10mm
Open/Close Damper Actuator, 5Nm, 24 V ac/dc Belimo 1m² 6 → 20mm Yes 1W Open/Close 24 V ac/dc 5Nm 35dB(A) 20mm 6mm
Open/Close Damper Actuator, 5Nm, 240 V ac Belimo 1m² 6 → 20mm - 1.5W Open/Close 240 V ac 5Nm 35dB(A) 20mm 6mm
Open/Close Damper Actuator, 20Nm, 19.2 → 264 V ac, 21.6 → 137.5 V dc Belimo 4m² 10 → 25.4mm Yes 7W Open/Close 19.2 → 264 V ac, 21.6 → 137.5 V dc 20Nm ≤45 (Motor) dBA, ≤62 (Spring Return) dBA 25.4mm 10mm
Modulating Damper Actuator, 40Nm, 24 V ac/dc Belimo 8m² 12 → 26.7mm - 4.5W Modulating 24 V ac/dc 40Nm 45dB(A) 26.7mm 12mm
Modulating Damper Actuator, 20Nm, 24 V ac/dc Belimo 4m² 10 → 25.4mm - 5W Modulating 24 V ac/dc 20Nm 40dB(A) 25.4mm 10mm
Modulating Damper Actuator, 10Nm, 24 V ac/dc Belimo 2m² 8 → 26.7mm - 2W Modulating 24 V ac/dc 10Nm 35dB(A) 26.7mm 8mm
Open/Close Damper Actuator, 5Nm, 24 V ac/dc Belimo 1m² 6 → 20mm - 1W Open/Close 24 V ac/dc 5Nm 35dB(A) 20mm 6mm
Open/Close Damper Actuator, 10Nm, 24 V ac/dc Belimo 2m² 8 → 26.7mm - 1.5W Open/Close 24 V ac/dc 10Nm 35dB(A) 26.7mm 8mm
Open/Close Damper Actuator, 10Nm, 240 V ac Belimo 2m² 8 → 26.7mm - 2.5W Open/Close 240 V ac 10Nm 35dB(A) 26.7mm 8mm
Open/Close Damper Actuator, 20Nm, 19.2 → 264 V ac, 21.6 → 137.5 V dc Belimo 4m² 10 → 25.4mm Yes 7W Open/Close 19.2 → 264 V ac, 21.6 → 137.5 V dc 20Nm ≤45 (Motor) dBA, ≤62 (Spring Return) dBA 25.4mm 10mm
Modulating Damper Actuator, 10Nm, 24 V ac/dc Belimo - - - 1.5W Modulating 24 V ac/dc 10Nm 35dB(A) - -
Open/Close Damper Actuator, 5Nm, 240 V ac Belimo 1m² 6 → 20mm Yes 1.5W Open/Close 240 V ac 5Nm 35dB(A) 20mm 6mm
Actuator Zone MZ20B-24 5,5mm Schneider Electric - - Yes - - 24 V ac - - - -
Modulating Damper Actuator, 20Nm, 24 V ac/dc Schneider Electric 4m² 10 → 20mm Yes 2W Modulating 24 V ac/dc 20Nm - 20mm 10mm
Open/Close Damper Actuator, 10Nm, 24 V ac Belimo - - - 1.5W Open/Close 24 V ac 10Nm 35dB(A) - -
Open/Close Damper Actuator, 40Nm, 24 V ac/dc Belimo 8m² 12 → 26.7mm - 4W Open/Close 24 V ac/dc 40Nm 45dB(A) 26.7mm 12mm
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