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Description
RD28S-4DW.4R.2L ZIEHL-ABEGG Centrifugal Fan 3~400V 1.75kW 3.1A 1130rpmMADE IN GERMANY CENTRIFUGAL INDUSTRIAL FAN ZIEHL ABEGG RD28S 4DW. 4R. 2L Centrifugal Fan German engineered for 10+ years of continuous operation, whisper quiet 1130rpm performance, energy saving 1. 75kW motor, and high static pressure the ultimate cooling solution for demanding industrial systems. DOWNLOAD OFFICIAL DATASHEET (PDF) Core Performance Advantages 10+ Years Industrial Durability ZIEHL ABEGG German engineering with premium ball bearings,
🇩🇪 MADE IN GERMANY | CENTRIFUGAL INDUSTRIAL FAN
ZIEHL-ABEGG RD28S-4DW.4R.2L Centrifugal Fan
German-engineered for 10+ years of continuous operation, whisper-quiet 1130rpm performance, energy-saving 1.75kW motor, and high static pressure – the ultimate cooling solution for demanding industrial systems.
📄 DOWNLOAD OFFICIAL DATASHEET (PDF)Core Performance Advantages
10+ Years Industrial Durability
ZIEHL-ABEGG German engineering with premium ball bearings, reinforced housing, and robust 25kg build. Exceeds 10+ years of continuous operation in harsh environments with minimal maintenance.
Ultra-Quiet Operation
Advanced aerodynamic impeller profiling and precision dynamic balancing drastically reduce turbulence and noise. Ideal for hospitals, offices, residential areas, and noise-sensitive facilities.
Energy Efficient Low Power
Optimized 1.75kW consumption with 3.1A current draw (3~400V). Cuts energy costs significantly vs conventional fans – perfect for 24/7 continuous duty cycles.
High-Volume Centrifugal Airflow
Powerful 1130 rpm centrifugal airflow delivers exceptional static pressure and directional cooling. Provides superior heat dissipation for data centers, power electronics, and industrial systems.
Industry Applications
The RD28S-4DW.4R.2L is trusted across multiple sectors requiring reliable, high-efficiency centrifugal ventilation.
Industrial Ventilation
Commercial Air Conditioning
Industrial Refrigeration
Heating Systems
Electrical Automation
Frequency Converters
Rail Transportation HVAC
HVAC (FFU/AHU)
Air Purification Systems
New Energy Vehicles
Data Center Cooling
Hospital HVAC Systems
Laboratory Ventilation
Telecom Equipment Cooling
Battery Storage Systems
Marine & Shipboard HVAC
Technical Specifications
| Model No | RD28S-4DW.4R.2L GENUINE |
| Article No | 209904 FACTORY CODE |
| Motor No | RZ28S-4DW.4R.2L MOTOR CODE |
| Condition | Original new from manufacturer |
| Power | 1.75 kW ENERGY EFFICIENT |
| Voltage | 3~400V THREE PHASE |
| Current | 3.1 A OPTIMIZED DRAW |
| Speed | 1130 rpm HIGH AIRFLOW |
| Frequency | 50/60 Hz |
| Manufacturer | ZIEHL-ABEGG GERMANY |
| HS Code | 8414599099 |
| Country of Origin | Germany MADE IN GERMANY |
| Product Type | Centrifugal fan INDUSTRIAL GRADE |
| Warranty | 1 year PEACE OF MIND |
| Net Weight | 25 kg HEAVY DUTY |
| Shipping Dimension | 50*50*50 cm |
| Ship From | Hong Kong |
| Lead Time | 5 days |
| Delivery Time | 3-8 days |
| Ship By | DHL / UPS |
📦 Shipping, Warranty & Service
Sell and ship only genuine products from factory.
Promise: Meet all factory specs, fit, form, and function.
Shipping From: Dispatched from Hong Kong – fast global distribution hub.
Processing Time: Orders are processed within 5 business days.
Express Delivery: Worldwide delivery in 3-8 business days via DHL / UPS.
Warranty: Full 1-year manufacturer warranty backed by ZIEHL-ABEGG.
30-Day Returns: 30-day return policy & 100% customer satisfaction commitment.
Volume Pricing: For large quantity inquiries: [email protected]
Frequently Asked Questions
🔹 Q1: What makes this fan last over 10 years?
A: The RD28S-4DW.4R.2L features German-engineered construction with premium ball bearings, reinforced housing, and robust 25kg build. Designed for continuous industrial duty with minimal wear, ensuring a service life exceeding a decade.
🔹 Q2: How quiet is the 1130 rpm operation?
A: Despite its high static pressure capability, the aerodynamically optimized impeller and precision balancing drastically reduce noise. It is well-suited for noise-sensitive environments such as hospitals, labs, and office buildings.
🔹 Q3: How does the 1.75 kW motor save energy?
A: With optimized current draw of 3.1A and high efficiency across 400V, it consumes significantly less power than traditional fans, lowering operational costs especially in 24/7 applications.
🔹 Q4: What cooling performance can I expect?
A: The 1130 RPM centrifugal airflow delivers exceptional static pressure and volumetric flow, ensuring superior heat dissipation for industrial machinery, data centers, and HVAC systems.
Need a Reliable High-Performance Centrifugal Fan?
Contact our technical team for application support, bulk quotes, or customized solutions.
📧 Request Technical Support 📊 Request Volume Pricing⭐ Customer Reviews
★★★★★ Verified Buyer – Senior Industrial Engineer
"The ZIEHL-ABEGG RD28S-4DW.4R.2L exceeded all expectations. It runs extremely quiet at 1130 rpm, delivers powerful centrifugal airflow with excellent static pressure, and the 1.75kW motor saves us significant energy costs. Build quality is rock-solid at 25kg – clearly engineered for 10+ years of heavy-duty operation. Perfect for our industrial ventilation and VFD cooling retrofit. Highly recommended for any application requiring reliable, silent, high-static-pressure airflow."
— Jürgen H., Facility Operations Manager
✅ Verified Purchase · Reviewed on May 8, 2026
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.8 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 5
Wonderful face cleanser
Style: Tolerance Daily Foaming Facial Cleanser
The best product I have found for cleansing my make up off. I have rosacea and I find this to be so gentle on my face.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
★★★★★ 5
A foaming cleanser that doesn't dry out my skin!
Style: Tolerance Daily Foaming Facial Cleanser
I have very dry, reactive skin and initially looked past this face wash because it is foaming which is usually a no-go for my skin. I am pleasantly surprised with how well my skin tolerated this product. No dryness or irritation and my face felt clean. I also love that it is fragrance free because fragrances seem to really irritate my skin and who needs to smell their face wash? I am happy to say this is another great product from Avene!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2026
★★★★★ 5
Gentle cleanser for dry and sensitive skin.
Style: Tolerance Daily Foaming Facial Cleanser, Style: Tolerance Daily Foaming Facial Cleanser
I have dry and sensitive skin, and this cleanser has worked very well for me. It is very gentle on the skin and has not caused any irritation.
The texture is light and foamy, it spreads easily across the face and rinses off without leaving any residue. After using it, my skin feels clean, soft, and comfortable, without any tightness.
The size is quite large, which I find great because it lasts a long time with daily use.
Overall, a simple but very pleasant cleanser for sensitive skin.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
★★★★★ 5
Gentle Yet Effective—Perfect for Redness and Sensitive Skin
I’ve been really impressed with this Anua Azelaic Acid serum—it’s one of those products that feels gentle but still delivers noticeable results. The formula is lightweight and absorbs quickly, leaving no sticky or heavy feeling behind, which makes it easy to layer with the rest of my skincare.
What stands out most is how soothing it is. The 10% azelaic acid helps calm redness and irritation while still being mild enough for sensitive skin. Combined with multiple types of hyaluronic acid, it keeps my skin hydrated and balanced instead of dry or tight. 
Over time, I noticed my skin tone looking more even and less inflamed, especially in areas prone to breakouts or redness. It’s a great option if you want something that targets multiple concerns—like texture, redness, and hydration—without being too harsh.
Overall, this is a fantastic serum for anyone dealing with sensitive or reactive skin. It’s effective, easy to use, and feels like a high-quality addition to a daily routine. I’ll definitely keep repurchasing.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026
★★★★★ 5
Totally worth it!!
So I have combination skin with a tendency toward closed comedones and I decided to try this product because I heard that azelaic acid helps with closed comedones. Honestly, I didn’t have very high expectations because my closed comedones have been very stubborn. I was already using the COSRX BHA before introducing this product, but it worked very slowly, so I wasn’t really getting the results I wanted from that product alone. Let me tell you that once I introduced this product, I finally started seeing the results I was looking for. I have noticed that my closed comedones have been resolving way faster than when I was only using the BHA and my skin also feels softer and overall looks healthier. I also want to mention that even though I don’t get inflamed breakouts very often, when I do get one, I feel like this product helps it calm down and go away much faster. I did start incorporating it slowly, and I highly recommend that anyone who wants to start using this product do the same and not rush into using it every day right away. Despite that, I personally haven’t had any issues with irritation at all and I actually find it very soothing, but you always need to be careful when adding new actives to your routine. I am currently using this product 4-5 days a week, once a day, and on the days I do not use it, I use my BHA instead. I also find that this product lasts a long time, since you only need like five drops for the entire face and the consistency is very watery. I’ve been using it for around two months, and there is still plenty left. Overall, I really recommend this product because it has helped me a lot, and while I am not sure if this alone would be enough to treat closed comedones, I would definitely say it is a great complement to other treatments.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 27, 2026
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