SKU: 62093924014

RD31S-4DW.6Q.AL ZIEHL-ABEGG Centrifugal Fan 3~400V 3.9kW 11.0/6.4A 1300rpm

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Description

RD31S-4DW.6Q.AL ZIEHL-ABEGG Centrifugal Fan 3~400V 3.9kW 11.0/6.4A 1300rpmZIEHL ABEGG RD31S 4DW. 6Q. AL Centrifugal Fan 3. 9kW German Made ZIEHL ABEGG RD31S 4DW. 6Q. AL Centrifugal Fan 3. 9kW 400V 1300rpm GERMAN ENGINEERING High performance industrial centrifugal fan engineered for extreme durability (>10 years), whisper quiet operation, ultra low energy consumption, and powerful high volume airflow. Perfect for heavy duty HVAC, industrial ventilation, cooling systems, and critical thermal management. Download Official

ZIEHL-ABEGG RD31S-4DW.6Q.AL Centrifugal Fan | 3.9kW German Made

ZIEHL-ABEGG RD31S-4DW.6Q.AL Centrifugal Fan

⚡ 3.9kW | 400V | 1300rpm | GERMAN ENGINEERING

High-performance industrial centrifugal fan engineered for extreme durability (>10 years), whisper-quiet operation, ultra-low energy consumption, and powerful high-volume airflow. Perfect for heavy-duty HVAC, industrial ventilation, cooling systems, and critical thermal management.

📄 Download Official Datasheet (PDF)

Core Performance Advantages

🏭🔩
10+ Years Industrial Durability
German-engineered by ZIEHL-ABEGG with robust 41kg heavy-duty construction, premium sealed bearings, and reinforced housing. Proven to operate reliably for over a decade in the harshest industrial environments.
🔇🍃
Ultra-Quiet Operation
Aerodynamically optimized centrifugal impeller and precision dynamic balancing deliver exceptionally low noise levels. Ideal for noise-sensitive facilities despite high power output.
⚡💚
Energy Saving / Low Power Draw
Efficient 3.9kW motor with only 11.0/6.4A current draw at 400V three-phase. Exceptional energy efficiency for continuous 24/7 industrial operation.
💨🌊
High Airflow & Superior Cooling
Optimized operation at 1300 rpm generates exceptional centrifugal airflow with high static pressure. Provides outstanding heat dissipation for large industrial equipment and heavy machinery.

Applications Across Industries

The RD31S-4DW.6Q.AL is a versatile solution for demanding ventilation and cooling challenges across global markets.

🏭Industrial Ventilation
❄️Commercial Air Conditioning
🧊Industrial Refrigeration
🔥Heating Systems
⚙️Electrical Automation
🔌Frequency Converters / VFD
🚄Rail Transportation HVAC
🏢HVAC (FFU/AHU) Systems
🌫️Air Purification
🚗New Energy Vehicles
🏗️Process Cooling
💻Data Center Cooling
⚡Power Plant Ventilation
🏥Hospital HVAC
🔬Laboratory Ventilation
📡Telecom Equipment Cooling
🔋Battery Storage Systems
🌾Agricultural Ventilation
🚢Marine & Shipboard HVAC
🏗️Cooling Towers

Technical Specifications

Model Number RD31S-4DW.6Q.AL Genuine
Article No: 121303 | Motor No: RZ31S-4DW.6Q.AL
Manufacturer ZIEHL-ABEGG Made in Germany
Product Type Centrifugal Fan High Static Pressure
Condition Original new from manufacturer
Rated Power 3.9 kW Heavy Duty Industrial Grade
Voltage 3~400V / 50/60Hz Three Phase
Rated Current 11.0 A / 6.4 A
Speed 1300 rpm
Frequency 50/60Hz
Net Weight 41 kg
Shipping Dimension 50 × 50 × 50 cm
HS Code 8414599099
Country of Origin Germany
Warranty 1 year manufacturer warranty
Ship From Hong Kong
Lead Time 5 business days
Delivery Time 3-8 business days worldwide (DHL/UPS)
Guarantee 30-day return policy • 100% customer satisfaction

Engineering Excellence

🛠️ Heavy-Duty German Bearings
Precision industrial-grade ball bearings with high-temperature grease ensure maintenance-free operation beyond 10+ years even under extreme continuous loads.
🔇 Noise-optimized Centrifugal Design
Advanced scroll housing and dynamically balanced impeller reduce turbulence and noise, making it suitable for acoustic-sensitive environments.
⚡ High Efficiency Three-Phase Motor
3.9kW with only 11.0/6.4A current draw delivers exceptional energy savings. Three-phase 400V operation provides stable, efficient power for demanding industrial applications.
💨 High Static Pressure & Airflow
1300 rpm centrifugal design generates excellent air movement for heat dissipation in industrial machinery, cooling towers, and HVAC systems.

🚚 Shipping & Service Guarantee

Shipping From: Hong Kong – efficient global distribution hub.

Processing: Orders ship within 5 business days.

Express Delivery: 3-8 business days worldwide via DHL or UPS.

Genuine Promise: Only original ZIEHL-ABEGG factory-sealed products, meet all fit, form and function specifications.

Warranty & Returns: 1-year manufacturer warranty + 30-day hassle-free returns.

📦 Bulk / Large Quantity Inquiries: Contact [email protected] for volume pricing and custom logistics solutions.

❓ Frequently Asked Questions

Q1: How does this fan achieve over 10 years of reliable operation?
The RD31S-4DW.6Q.AL features heavy-duty die-cast housing, German-made premium industrial bearings, and a thermally protected motor. ZIEHL-ABEGG's rigorous testing ensures it withstands dust, humidity, vibration, and continuous duty cycles beyond a decade.
Q2: Is it quiet enough for commercial environments despite its power?
Yes. Thanks to its precision-balanced centrifugal impeller and optimized scroll housing, noise levels are remarkably low for its 3.9kW power class, making it suitable for commercial buildings and hospitals.
Q3: Why choose three-phase 400V for industrial applications?
Three-phase operation provides smoother power delivery, higher efficiency, and better reliability for continuous industrial use. It's the standard for manufacturing facilities worldwide.
Q4: What cooling performance can I expect for large industrial applications?
The powerful 3.9kW centrifugal design delivers exceptional static pressure and airflow, ensuring superior heat dissipation for cooling towers, industrial machinery, power plants, and heavy-duty HVAC applications under extreme thermal loads.

Need Expert Advice or Volume Discounts?

Our technical team is ready to assist with application matching, performance data, and custom quotations for OEM and industrial projects.

📧 Request Technical Support 💰 Request Volume Pricing

Customer Testimonial

★★★★★

"We installed the RD31S-4DW.6Q.AL in our manufacturing plant's cooling tower system, and the performance is outstanding. After 20 months of 24/7 operation, it runs smoothly with minimal noise despite the powerful 3.9kW output. The 11.0/6.4A current draw is incredibly efficient—saving us significant energy costs. The 41kg German build quality is rock solid. Perfect for demanding industrial environments where reliability and energy savings are critical. Highly recommended for heavy-duty cooling tower applications!"

— Thomas Richter, Plant Operations Director
Verified Buyer · Industrial Cooling Tower System · April 2026

* All products are 100% genuine ZIEHL-ABEGG. Specifications are subject to manufacturer updates. Contact us for compatibility check.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 62093924014

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EMILY
Chelsea, US
★★★★★ 5
Works for me
Im still reading this. I am finding it informative....as it should be.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 24, 2025
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Jed Rothwell
Alexandria, US
★★★★★ 5
Witty introduction. Not detailed, but technically accurate
Format: Kindle
I loved this book! I am a programmer and I have read several books about AI. This is an introduction for the general public. It does not have many technical details, but it is technically accurate. The writing is clear and understandable. It is also hilarious, with cute illustrations. I think it has more technical details and more interesting, on-point examples than some reviewers appreciate. They see the jokes and illustrations, and they don't notice how much technical information comes along with them. For example, she describes some fascinating parallels with biological evolution and AI systems discovering method of locomotion on their own, such as making yourself into a tower and then toppling over in the direction you want to go. The author points out this is how some species of grass propagate their seeds, one stem-length, each growing season. This is a short technical book. I like that! It reminds me of the classic "How to Lie With Statistics," by Darrell Huff, 1954, 142 pages. Everyone who wants to understand statistics should read this. It is also hilarious, it also has cute illustrations, and it is also one of the best introductions to the subject ever written.
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Reviewed in the United States on November 20, 2019
M
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M Arneson
Los Angeles, US
★★★★★ 4
Funny and scary, but with a bit of reassurance
Format: Kindle
Reassuring and disturbing at the same time, this book exposes the flaws and risks of AI, while pointing out the weaknesses that make it incapable of taking over the world. The examples of AI foolishness entertain and startle. AI's missteps and errors and the real harm they cause provide a warning that is easier to absorb when leavened with the humor. So what happens if I end this review with a bit of AI-generated predictive texting? Here goes: This is a story out of India and I am not sure if I can make it to the wrong email address. Please let me know if you have any questions. I look forward to hearing from you.
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Reviewed in the United States on December 1, 2019
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Randy Hayes
Lowell, US
★★★★★ 5
Hilarious and Informative
Format: Kindle
This book was a major hit with me - it had me in hysterics at several points while teaching me a lot about machine learning and neural networks on a deep level.
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Reviewed in the United States on April 5, 2026
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Odysseus at home
Port Orchard, US
★★★★★ 5
An adorable book
Format: Paperback
This is an adorable book. I bought it because I needed to know more about AI, and this exemplar seemed perfect to me. And it was. I had already read several books on AI, dozens in fact, and let's say this is one of the best. First: the tone (the author is very nice); secondly, the drawings (always adding clarity), and thirdly, the scope (it covers all the main topics, including ethical and technological issues). The problem with books on AI is that some authors begin to talk on AI in a very effective manner, but then, before you realize, they start pontificating on all the evils that it brings with it, and the perverse people behind the scene trying to kidnap your soul (or your money). Believe me, I tremble every time I read on AI because I know what possibly is going to happen after the first fifty pages. This is not the case. Janelle Shane goes to the point, shows you the magic, and the limits of this pervasive science, without painting the horror movie some others make you watch. Highly recommended for all those interested in passing a couple of days of good reading on AI topics, learning on them, and enjoying a very entertaining author. Five brilliant stars.
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Reviewed in the United States on October 13, 2023

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