Product Introduction
The Spring-return Damper Actuator (10Nm/15Nm/20Nm, 24V ON/OFF) is designed for the reliable operation of air control dampers in modern HVAC systems. Built with precision engineering, it ensures accurate positioning, fast response, and dependable spring-return function for safety in case of power loss.
Ideal for commercial buildings, industrial facilities, and smart HVAC projects, this actuator offers long service life, compact installation, and optional auxiliary switches for enhanced control flexibility.
Key Features & Benefits
● Wide Torque Options – Available in 10Nm, 15Nm, and 20Nm for various damper sizes.
● Safe Spring-return Mechanism – Automatically resets the damper position when power is lost.
● Flexible Power Supply – Compatible with AC/DC 24V (50/60Hz).
● ON/OFF Control – Simple, reliable operation for standard HVAC automation.
● Low Noise Performance – Quiet operation at only 45dB.
● Durable & Compact – Designed for long-term operation under demanding HVAC conditions.
● Optional Auxiliary Switches – Available with 2 SPDT switches for additional control.
Model Selection Table
|
Torque |
Running Time (Normal/Spring Reset) |
Power Supply |
Auxiliary Switch |
Model/Type |
|
10Nm |
<100s / <25s |
AC/DC 24V |
None or 2-SPDT |
HY-DFS10-24(S) |
|
15Nm |
<150s / <25s |
AC/DC 24V |
None or 2-SPDT |
HY-DFS15-24(S) |
|
20Nm |
<180s / <30s |
AC/DC 24V |
None or 2-SPDT |
HY-DFS20-24(S) |
Technical Specifications
|
Specification |
Details |
|
Nominal Voltage |
AC/DC 24V, 50/60Hz |
|
Voltage Range |
AC/DC 19.2…28.8V |
|
Power Consumption |
5W / 10W (nominal), 3W holding |
|
Wire Sizing |
0.5mm² |
|
Torque |
10Nm / 15Nm / 20Nm |
|
Damper Size |
1.5m² / 3m² / 4m² |
|
Rotation Direction |
Selectable (L/R) |
|
Manual Override |
Yes |
|
Angle of Rotation |
Max. 95°, adjustable |
|
Running Time |
<100s / <150s / <180s (motorized), <25s / <25s / <30s (spring reset) |
|
Noise Level |
45dB |
|
Position Indication |
Mechanical |
|
Protection Class |
Class III (safety low voltage) |
|
Protection Level |
IP54 |
|
Ambient Temperature |
-20°C to +50°C |
|
Storage Temperature |
-30°C to +80°C |
|
Humidity |
95% RH, non-condensing |
|
Dimensions (LxWxH) |
See "Dimensions" drawing |
|
Shaft Length |
>90mm |
|
Shaft Diameter |
Ø21…21mm / 6x6…15x15mm |
|
Weight |
<2.3kg (10Nm) / <2.6kg (15Nm & 20Nm) |
Applications
● Commercial HVAC systems
● Air handling units (AHU)
● Ventilation and duct systems
● Building automation & energy management
● Industrial ventilation
FAQ
Q1: What is a spring-return damper actuator and why is it important?
A spring-return actuator is designed to return the damper to a safe position automatically when power is lost. This feature is essential in HVAC safety, fire protection, and emergency ventilation systems.
Q2: What torque options are available for this actuator?
We offer three torque options: 10Nm, 15Nm, and 20Nm, suitable for damper sizes from 1.5m² to 4m².
Q3: Can this actuator be used in building automation systems?
Yes. With ON/OFF control and optional auxiliary switches, it can easily integrate into standard building management and automation systems.
Q4: What is the protection rating of this actuator?
The actuator is IP54 rated, ensuring protection against dust and splashing water, suitable for harsh HVAC environments.
Q5: Do you provide ODM/wholesale services for international brands?
Yes. As a professional China manufacturer, we support ODM branding, international distribution, and wholesale partnerships for global HVAC solution providers.
Call to Action
Looking for a reliable Spring-return Damper Actuator manufacturer with strong R&D and OEM/ODM capabilities?
Partner with Xiamen Hysen Control Technology Co., Ltd., a trusted supplier of HVAC control solutions worldwide.
👉 Contact Us Today for bulk orders, brand ODM cooperation, or technical consultation.
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