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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 18 reviews
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Product Reviews
★★★★★ 5
Great card to have highly recommend
Like using the card for everything. 5 to 7% cashback credit is awesome.
No interest is even better.
I put almost all my purchases and bills on my credit accounts or credit cards and pay them off monthly.
Now that I'm a senior citizen I don't like to go to 20 different stores to find the best prices.
The card made my life less busy and I don't have to worry about paying for the many, many things I need right away. Even though I pay off all my accounts every month.
If I need a big ticket item, like a new flat-screen television I can get it and not worry about the cost by paying over time if I need to.
Having another credit account has also improved my credit score by the hundreds. I was in the 500s for decades until I started the secured card on Amazon. Now I am nearly at an excellent score in the high 700s and don't need secured credit cards.
I can use my account at Whole Foods and have my phone scanned for payment. It's just so easy to use
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Reviewed in the United States on May 6, 2026
★★★★★ 3
Credit limit drop without cause, Synchrony?
Hey Synchrony, I've about had it with your services, I have 2 cards I use through you through Walgreens and Amazon. You lowered My credit limit on both cards causing me to go over on one because of stupid interest when I had 500 left and I had quit using the damn thing, and my Amazon store card I just Made a 200 Payment on! Lowering my limit and leaving me blind, You should call your customers leave a voicemail or text for heck sake ill read them, I don't read my emails usually for 2 or three weeks, well you did it again, but this time to card I just paid 200$ on too!, Your company sucks, I hate your practices, and I want you to know that. I also want Amazon to know that!! I spend a Boatload of money through amazon, as does my entire family, all ya gotta do is look!! Well I have never felt more unappreciated, insulted, like I stole something or like dirt ever ever in my adult life like you made me feel. Like i'm doing something wrong. Well guess what Synchrony Bank? I'm not doing anything wrong, at all!! I've never been late or missed a payment with my Amazon card or any card I have with you, Synchrony. Your Faceless Corp in its infinite wisdom, decided it would be a great idea to screw over an actual good customer just because some stupid algorithm reported my credit limit was too high and I was a risk, and lowered my limit from where it had been for the last 3 years and then sent a Quiet email about a letter that you put on my online account, please read it, just like that, no Urgent header nothing not that. I don't even read my email that often. I DO read texts or my regular mail, or listen to my phone messages!! I meant what I said NEVER LATE not even once, and NEVER MISSED a payment NOT once!!! The ONLY time I ever had to deal with any kind of problem was the one that lowering my limit on my Mastercard were the cause of, Synchrony!!! when you dropped my credit limit without me knowing and I went over my new dang limit because interest charges were coming in!!! I new where I was and had it handled and would have been able to ride the storm but no you had to mess with my account. Oh and I dont give a Crap if you quote me "we have the right to raise or lower you limit whenever we want", It's a BS excuse to screw over your customers, I know about the terms, however in all of my 54 years, you are the only credit card company that has ever lowered a limit one a CC I had EVER! and I've dealt with some Super sketchy Dirtbag Why did I ever agree to this card, charge me for everything Companies. Mostly when I was young but not even they cut my limit, without me missing payments or being late .....Now 30 years later much older and I thought wiser better CC much better 2500$ limit I've had for years and expect that limit to stay in place or like my Prime Store Card 2000$ limit to stay in place!! not dropped by 500$, for hells sake!!!! Well today I get the old hey your payment option for your try before you buy order needs addressed, and why do you think that was? Hmmm? Well, Ill tell you!! Because you Dropped my limit, by 500$ Now if Amazon dropped it then Ill chew them out too, but I don't think it was them, cuz you did this on my Walgreens card too!!! I just made a 200 payment on my Amazon card as well jerks! Not one of the several companies ive had previous Cards with NOT Cap one Cred one, citi, Community bank, american express, discover you name it, and Ive probably had it at one time or another dozens upon dozens over my adult life at this point anyway. Well, not even the Sleaziest Dirtyiest Gutter Scum CC company with fees for just looking at your card has ever lowered my credit limit not in 34 years Especially when I wasn't late or missing payments ever, always been on time and never missed a payment not 1 time, Except SYNCHRONY, and I think you suck for that!! The only reason I gave 3 stars is Amazon doesn't deserve a 1 star review because of your company! I love amazon, I love their products, their deals their delivery Amazon Prime, im ride or die with Amazon, my kids do all their shopping on amazon they even use it for groceries and stuff occasionally, but I really, really don't like how you treat customers Synchrony, especially customers, that pay on time and even early, oh and on auto pay for Christ sake!!! Now I know why some young dumb kids and people say screw it and stop paying CC bills, cuz the Corporations that pass em out like candy to kids, I might add, are SCUM bags, thats why!! It's all about the GREEN, more, and more and more money its never enough!! Well, when you dropped my credit limit without me knowing and I went over the limit of a different card I had with you, it was because of interest fees coming in. I expected and knew about these fees, however, I also thought I had 500 more than I had available on my card!! What a great day that was, let me tell ya!! I didn't even miss a payment I just didn't make a big enough one to cover the interest that came in, and I also never just pay the minimum payment with these cards either!! Your practices are shady, and the crap you pull against loyal customers that pay on time and even on Autopay are so Scummy!! You know when you dropped my credit limit without me knowing and I went over my limit because of interest, I even reached out to my current lawyer about Bankruptcy choices and stuff and if I should deal with you that way, but I got over bein mad! You know if I was late all the time and a crappy customer missing payments I wouldn't blame you for anything and at least Id know my cards were lowered and probably locked ...but I didn't want to do that, I wanted to try and slide right back into auto pay and get back on track and to deal with a recent Identity theft issue im having and not stop paying my bills OH..yeah, you smellin what i'm sellin? Well because of some terrible thing I must have done in a Past life, I guess. Several months ago now when I was dealing with the death of my mom very suddenly. I also noticed my credit score started dropping and I had no idea why, well turns out i'm MR popular. I had all sorts of crap in my name most of it local where I live and surrounding locally. 100 points in like 5 months!! I digress, Whatever! I don't care anymore, cancel my cards if you want, I'm done! This world is goin to hell in a hand basket, Civil War is almost immanent, a Faceless mob can destroy peoples lives just by canceling them on the internet at a whim. When its true I agree with the mob but when there isn't any proof and someone's life is upturned and then it turns out to be a total lie or they said something 12 years ago and its dug up? Good God, I probably said some haynous stuff when I was 25, but I can assure you when I was 37 I was not that person anymore, my views had changed on many things,,,,that stuff is crazy, and so am I for thinking I can do a damn thing,,,, my mom died 5 months ago, I was just recently laid off from my job I had for 17 years last month, and now you drop my limit again when i've been on time and auto paying and almost screw up my Amazon account!!so screw it!! Eat It Synchrony Bank,Eat It! Sorry about 3 Stars Amazon.
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Reviewed in the United States on March 24, 2024
★★★★★ 5
Great interactive toy
Size: One Size
My overall rating is a 5 stars because our dog absolutely loves the toy! It is a great tug toy and "launching" toy for fetch... Although she doesn't quite grasp the return part of fetching. She'd rather play "case me if you want it back!" I wish I had a better video but didn't think of making one until we were pretty much done playing. But you can see she's been playing hard up until this clip and is still wanting to play more... I'm the one exhausted. The rope part of this toy is what takes playing fetch to another level. Give it a good wind-up and let it fly! The weight of the ball carries it really far and very fast! More than I expected based on other toys one purchased. The first launch almost went over back wall of our yard! Skye didn't mind cause the rope made it easy for her to find it in the ivy. She loves throwing it around up in the air and flinging it around like cats throw their toys around. The ONLY issue is, of course is the durability. This toy is meant to be an interactive toy only. Once you're done playing, put it away if you want it to last. Especially if you have a dog that chews everything. It IS well made and of nice material, but no toy will survive her chewing skills. She'd have the rope chewed off in minutes. So it's up to the owner to keep this toy safe! If your dog isn't a chewer....I envy you and this toy will last a really long time! I would definitely recommend this toy for water or beach play as well. It's a big ball, but the rope and the groves in the ball make it very easy for her to grab. And if you don't want to use the rope to play, it fits into the groves around the ball and hooks into place. But honestly, we will never use that feature, the rope is the best part in my HER opinion! Definitely recommend and I'm going to buy more! I'm not thrilled with the price but everything is expensive these days,and if it's taken care of, it will last a long time.
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Reviewed in the United States on September 11, 2022
★★★★★ 5
Our Frenchie loves this toy
Size: One Size
Our Frenchie loves to pull and tug. She also loves to run after balls. The two in one makes it the perfect toy for her. We've been using it for over 8 months and while it does have some wear and tear... it's lasted a lot longer than her other today. She likes to grab the rope and run around the grass (sometimes getting too excited and tripping over the ball). As soon as we have to throw this one away... there's no doubt we are getting another one.
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Reviewed in the United States on July 16, 2021
★★★★★ 5
This is perfect for puppies. And small to medium dogs without strong biting jaws
Size: One Size
My border collie loved this as a puppy but wore out the rope. I got her another now that she is a year old and she loves it still but the rope showed wear almost immediately. She runs dragging it behind her and watching it bounce and she also swings it back and forth banging it on her head often but, it's so lightweight I don't worry that she's doing any harm to herself.
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Reviewed in the United States on April 30, 2024
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