Intro
In fire safety, every second counts. The precise operation of air control dampers is critical for containing smoke and managing airflow during an emergency. Xiamen Hysen Control Technology engineers robust 3Nm Fire Smoke Actuators designed for this exact purpose. Built for reliability and compliance, our actuators provide the essential torque and fail-safe operation required in modern HVAC and life safety systems. As a leading ODM manufacturer, we offer international partners high-quality, customizable solutions backed by stringent ISO standards.
Key Features & Technical Advantages
Our HY-DF-SF03 series is more than just a motor; it's a commitment to safety and performance. Here's what sets our 3Nm actuator apart:
Critical Spring-Return Function:
In the event of a power failure or fire alarm signal, the actuator automatically returns the damper to its safe, pre-set position (either open or closed) in under 75 seconds, ensuring compliance with smoke control protocols.
Dual Voltage Flexibility:
Engineered for global applications. Choose from low-voltage AC/DC 24V models for BMS integration or direct AC 100-240V options for simpler installations, reducing the need for additional transformers.
Integrated Thermal Sensor Option (DST Type):
Select models include a built-in SAF72 thermal sensor. This provides an added layer of safety by triggering the actuator's return function automatically upon detecting high ambient heat, independent of the main fire alarm panel.
Robust Protection for Harsh Environments:
With an IP54 rating, the actuator is protected against dust and water splashing, making it suitable for installation in plenums, mechanical rooms, and other demanding environments. It operates reliably in temperatures from -20°C to +50°C.
Manual Override:
A manual override feature allows technicians to easily position the damper manually for testing, maintenance, or during system commissioning without the need for tools.
Clear Mechanical Position Indicator:
Quickly and reliably see the damper's position (open/closed) at a glance, ensuring system status is always visible.
Detailed Technical Specifications
|
Feature |
Specification HY-DF-SF03-24S(T) |
Specification HY-DF-SF03-230S(T) |
|
Nominal Voltage |
AC/DC 24V 50/60Hz |
AC 100-240V 50/60Hz |
|
Voltage Range |
AC/DC 19.2V - 28.8V |
AC 85V - 265V |
|
Power Consumption |
5W (Running), 3W (Holding) |
5W (Running), 3W (Holding) |
|
Torque |
3 Newton-meters (Nm) |
3 Newton-meters (Nm) |
|
Running Time |
< 75 sec / < 25 sec (Spring Return) |
< 75 sec / < 25 sec (Spring Return) |
|
Rotation Angle |
Maximum 95° |
Maximum 95° |
|
Shaft Dimension |
12mm x 12mm (Sleeves for 8mm/10mm available) |
12mm x 12mm (Sleeves for 8mm/10mm available) |
|
Protection Class |
III (Safety Low Voltage) |
II (Totally Insulated) |
|
Ingress Protection |
IP54 |
IP54 |
|
Ambient Temperature |
-20°C to +50°C |
-20°C to +50°C |
|
Humidity |
Up to 95% RH (Non-Condensing) |
Up to 95% RH (Non-Condensing) |
|
Auxiliary Switch |
Optional (2-SPDT) |
Optional (2-SPDT) |
Model Selection Guide
|
Torque |
Power Supply |
Auxiliary Switch? |
Model Number |
|
3Nm |
AC/DC 24V |
No |
HY-DF-SF03-24 |
|
3Nm |
AC/DC 24V |
Yes (2-SPDT) |
HY-DF-SF03-24ST |
|
3Nm |
AC 100-240V |
No |
HY-DF-SF03-230 |
|
3Nm |
AC 100-240V |
Yes (2-SPDT) |
HY-DF-SF03-230ST |
Applications
● Smoke Evacuation Dampers in Commercial Buildings
● Fire Barrier Dampers in HVAC Ductwork
● Building Management Systems (BMS)
● car park Ventilation Control Systems
● Hospital and Tunnel Pressurization Systems
FAQ Section
Q1: Why is the 3Nm torque rating important for fire and smoke dampers?
3Nm provides the optimal force to reliably operate small to medium-sized dampers commonly used in residential and commercial ventilation systems. Sufficient torque ensures the damper blades move decisively, even against slight backpressure or accumulated dust, creating a tight seal to block smoke and fire. Choosing the correct torque is critical for system reliability and longevity.
Q2: What is the difference between the standard and "ST" model with the thermal sensor?
The standard model (e.g., HY-DF-SF03-230) operates solely on a signal from your central fire alarm control panel. The "ST" model (e.g., HY-DF-SF03-230ST) includes a built-in SAF72 thermal sensor that acts as a local, independent safety monitor. If the local temperature around the actuator rises sharply (typically due to fire), it will trigger the spring return function even if the main fire alarm signal fails, adding a crucial layer of redundancy.
Q3: Can you customize shaft sizes or connectors for ODM projects?
Absolutely. As an ODM specialist, we regularly customize components like shaft adapters (e.g., providing 8mm or 10mm sleeves), wire lengths, connector types, and even branding to meet our partners' specific requirements and technical drawings.
Q4: What certifications do these actuators hold, and are they suitable for international markets?
Our manufacturing processes adhere to ISO quality standards, and our actuators are designed to meet key international safety and performance guidelines, including IEC and EN standards. We work closely with our ODM and OEM partners to ensure products meet the specific certification requirements (e.g., CE, UL) for their target markets.
Q5: What is the lead time for large-volume ODM orders?
For standard large orders, our typical lead time is 2-4 weeks. We maintain stock of popular models to expedite initial samples and smaller batches. For highly customized projects, we provide a precise timeline after reviewing your technical specifications.
CTA (Call to Action)
Ready to Secure Your Supply Chain with a Trusted ODM Partner?
Don't compromise on quality for your life safety products. Xiamen Hysen provides reliable, customizable, and competitively priced fire smoke actuators for global distributors and brands.
● Request a Free Sample to test quality and performance firsthand.
● Download Detailed CAD Drawings and Full Technical Sheets for your engineering team.
● Get a Competitive Quote for your bulk ODM/OEM order directly from our factory.
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