---
product_id: 296825032
title: "AULTEN Copper Mainline Voltage Stabilizer for Home 5 KVA Heavy Duty 4000W 90V-300V AD014 (White) | 2 Year Warranty"
price: "€ 511.98"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.pt/products/296825032-aulten-copper-mainline-voltage-stabilizer-for-home-5-kva-heavy
store_origin: PT
region: Portugal
---

# 5-10 sec time delay protection 5 KVA heavy-duty power capacity Voltage cut-off range 90V-300V AULTEN Copper Mainline Voltage Stabilizer for Home 5 KVA Heavy Duty 4000W 90V-300V AD014 (White) | 2 Year Warranty

**Price:** € 511.98
**Availability:** ✅ In Stock

## Summary

> ⚡ Power up your home with smart, sleek, and safe voltage control!

## Quick Answers

- **What is this?** AULTEN Copper Mainline Voltage Stabilizer for Home 5 KVA Heavy Duty 4000W 90V-300V AD014 (White) | 2 Year Warranty
- **How much does it cost?** € 511.98 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/296825032-aulten-copper-mainline-voltage-stabilizer-for-home-5-kva-heavy)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Real-Time Insights:** Multifunctional digital display keeps you informed with live voltage stats and alerts.
- • **Space-Savvy Design:** Sleek wall-mountable build frees up your floor space while adding modern flair.
- • **Smart Voltage Guard:** Automatic cut-off between 90V-300V shields appliances from damaging surges and drops.
- • **Powerhouse Protection:** Robust 4000W capacity safeguards all your home essentials effortlessly.
- • **Peace of Mind Warranty:** Backed by a 2-year replacement warranty for worry-free, long-term reliability.

## Overview

The AULTEN Copper Mainline Voltage Stabilizer is a heavy-duty 5 KVA (4000W) device designed for home use, offering advanced protection with automatic low and high voltage cut-offs between 90V and 300V. Featuring a multifunctional digital display and a 5-10 second time delay system, it ensures your appliances are shielded from sudden power fluctuations. Its wall-mountable design saves space, and it comes with a 2-year replacement warranty for dependable performance.

## Description

Product Description Why Your Home Needs a Stabilizer A stabilizer protects home appliances from voltage fluctuations, preventing damage and extending their lifespan. It ensures a steady power supply, enhances performance, and reduces repair costs. Essential in areas with unstable electricity, it safeguards devices from surges and spikes, making it a cost-effective investment for long-term appliance safety and efficiency. Digital Display Effortlessly monitor voltage fluctuations and power stability in real time for better protection and performance. Integrated Time Delay System Helps control the timing of tasks by adding precise delays, ensuring that processes run smoothly, accurately, and in the right order. Advanced Microcontroller Acts like the brain of the system, handling data, connecting to sensors, and managing communication for better performance. Pure Copper Stabilizer Protect your appliances with a heavy-duty copper stabilizer. Fast, reliable, built to last, energy-efficient, and heat-resistant. Technical Specifications

Review: Highly Recommended – Durable and Efficient - I purchased this Alten stabilizer about a year ago, and it has been working perfectly ever since. The performance is reliable, and it provides excellent protection against voltage fluctuations. The build quality is good, and I haven't faced any issues so far. Overall, I am very satisfied with this purchase and would definitely recommend it.
Review: Stay away from this if you value your sanity - There are problems with the product and the company and I'll share my experience. I get 90-250V AC input, I have a few ACs, computers, networking gear, submersible pump, cameras, lights, fans and so on. This stabilizer's output range is 200-240V +/- 5%. It lets the voltage fall to 190V and then immediately pushes it up to 235V. In my area during low voltage periods, Input voltage moves between 170-200V or 130-170V. It starts off at the higher range and goes down as the appliances like AC are turned on. This means, The voltage on the output will be fluctuating a LOT, every freaking minute. That damaged some AC->DC adapters and will absolutely effect lifespan of compressors in AC/fridges. Do not buy this AC if you want to run Inverter ACs. Inverter ACs(with stabilizer inside) do not take kindly to such wild fluctuations caused by the stabilizer(even a 1-2V fluctuation at 189-191V on input will cause 45V fluctuation from 190V->235V on the output) and the compressor in AC will keep restarting. In my case when voltage dropped below 190, Stabilizer output 235V(and restart ACs in the process). This restart would ease the load and input voltage will go up from 190V causing another fluctuation! This kept happening in a loop non-stop. Now on to my experience with the company. When I had these problems, I chat with them on whatsapp and called them. It took me weeks to get technical support. When I got technical support, They asked me to put the stabilizer in bypass mode and see if I still had problems (which I did except instead of compressor speed going from 100% -> 4%, it would go from 100% to 20%). After hearing this, They said their stabilizer was not at fault. The issue here is, I didn't have these issues if I disconnected the stabilizer and connected input/output directly. Anyway, The person I was talking to said, I should install servo stabilizer because I have all this expensive stuff connected to it, which makes sense. I asked them if they made servo stabilizers and they said they did. I asked them for a quote, they said 90V-270V servo stabilizer will cost me ~43k including shipping+GST and I agreed to buy it. They didn't share any payment details or any other details. Then, I kept asking them for help in buying the stabilizer for multiple weeks and they never responded to me. TL;DR is, The technical support was quick to give up and shift blame. Their sales dept is useless. If they didn't want to make a sale, they could've just said so. I wasted weeks trying to get these idiots to respond when I could've gone with literally any of the dozen or hundred other companies in this space. These guys are unresponsive & rude. The product itself has multiple issues and I strongly recommend you look into alternatives. I almost forgot to mention. The product and their website has multiple other stupid issues. 1. They literally do not mention any technical details beyond what you can find in the title. This is in contrast to other companies that provide detailed tables with acceptable values for various technical parameters and also provide you with a copy of the test report when you get the product. 2. This product has 2 MCBs in the front. 1 for bypass and another to turn on the stabilizer. You'll find some warnings to not turn both of them on at the same time but you'll not find the reason. In one of the reviews(or it may have been aulten's website), I read that this is because it can cause a short circuit. These stupid people have made a product that goes into people's home(where it may be in reach of kids or people who just don't know any better) which has a flaw where turning on the only 2 buttons on the product will cause a short circuit! Do you really don't know of any better and safer way of implementing this!?? This is highly irresponsible and in my opinion a product like this should be taken off of desertcart. Please avoid this and buy any other product. I personally picked a servo stabilizer from golden servo.

## Features

- Low and High Voltage Cut Off- Protects your connected appliances from sudden high voltage surge and also from low voltage drop with inbuilt high low cut off. High Voltage Cut off at- 280V, Max Tolerance upto- 300V
- Integrated Time Delay System- 5 to 10 Seconds initial time delay to protect your connected appliances from sudden and frequent power outages
- Multifunctional Digital Display- Stabilizer that shows everything happening with the stabilizer like real time input and output voltage being supplied through the stabilizer and also warns you in case of high and low voltage surge protection
- Wall Mounted- Wall mounting design makes it sleek and versatile save your precious floor space by conveniently hanging it on the wall
- 2-year replacement warranty is provided, subject to the terms and conditions specified in the brand policy on the official brand website. Customer Care: 9811597709 | Email: 10@aulten.com
- German Technology Toroidal- Highly efficient auto wound toroidal transformer built with German technology that reduces your electricity bill by providing optimal power to your connected appliances. Having it industry standard lowest self power consumption that consumes electricity less than a light bulb power itself
- Note:- This product is designed exclusively for domestic use. For commercial or industrial applications, we recommend using a servo voltage stabilizer.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Aulten Digital Private Limited |
| Country of Origin | India |
| Item model number | 5KVA |
| ASIN | B08QYQYV4B |

## Images

![AULTEN Copper Mainline Voltage Stabilizer for Home 5 KVA Heavy Duty 4000W 90V-300V AD014 (White) | 2 Year Warranty - Image 1](https://m.media-amazon.com/images/I/51QObaUs7YL.jpg)
![AULTEN Copper Mainline Voltage Stabilizer for Home 5 KVA Heavy Duty 4000W 90V-300V AD014 (White) | 2 Year Warranty - Image 2](https://m.media-amazon.com/images/I/714bxsTTb+L.jpg)
![AULTEN Copper Mainline Voltage Stabilizer for Home 5 KVA Heavy Duty 4000W 90V-300V AD014 (White) | 2 Year Warranty - Image 3](https://m.media-amazon.com/images/I/71NqlIon0dL.jpg)
![AULTEN Copper Mainline Voltage Stabilizer for Home 5 KVA Heavy Duty 4000W 90V-300V AD014 (White) | 2 Year Warranty - Image 4](https://m.media-amazon.com/images/I/71FngMZqi0L.jpg)
![AULTEN Copper Mainline Voltage Stabilizer for Home 5 KVA Heavy Duty 4000W 90V-300V AD014 (White) | 2 Year Warranty - Image 5](https://m.media-amazon.com/images/I/71yicQpY7aL.jpg)

## Questions & Answers

**Q: 1.Does it really works well on 50 volts?     2.Where to claim service warranty?**
A: no

**Q: Can you share the inner picture of the stabilizer without the top cover please? need to compare al and cu transformers.**
A: Contact customer care whatsapp 9811597709

**Q: Why wattage : 4000 watts and capacity : 5 kva are different? both are usually same, isn't it?**
A: No there is technical difference between Wattage and KVA

**Q: Service available in Tamilnadu Thoothukudi district**
A: No

## Customer Reviews

### ⭐⭐⭐⭐⭐ Highly Recommended – Durable and Efficient
*by M***I on 15 June 2026*

I purchased this Alten stabilizer about a year ago, and it has been working perfectly ever since. The performance is reliable, and it provides excellent protection against voltage fluctuations. The build quality is good, and I haven't faced any issues so far. Overall, I am very satisfied with this purchase and would definitely recommend it.

### ⭐ Stay away from this if you value your sanity
*by I***N on 12 July 2023*

There are problems with the product and the company and I'll share my experience. I get 90-250V AC input, I have a few ACs, computers, networking gear, submersible pump, cameras, lights, fans and so on. This stabilizer's output range is 200-240V +/- 5%. It lets the voltage fall to 190V and then immediately pushes it up to 235V. In my area during low voltage periods, Input voltage moves between 170-200V or 130-170V. It starts off at the higher range and goes down as the appliances like AC are turned on. This means, The voltage on the output will be fluctuating a LOT, every freaking minute. That damaged some AC->DC adapters and will absolutely effect lifespan of compressors in AC/fridges. Do not buy this AC if you want to run Inverter ACs. Inverter ACs(with stabilizer inside) do not take kindly to such wild fluctuations caused by the stabilizer(even a 1-2V fluctuation at 189-191V on input will cause 45V fluctuation from 190V->235V on the output) and the compressor in AC will keep restarting. In my case when voltage dropped below 190, Stabilizer output 235V(and restart ACs in the process). This restart would ease the load and input voltage will go up from 190V causing another fluctuation! This kept happening in a loop non-stop. Now on to my experience with the company. When I had these problems, I chat with them on whatsapp and called them. It took me weeks to get technical support. When I got technical support, They asked me to put the stabilizer in bypass mode and see if I still had problems (which I did except instead of compressor speed going from 100% -> 4%, it would go from 100% to 20%). After hearing this, They said their stabilizer was not at fault. The issue here is, I didn't have these issues if I disconnected the stabilizer and connected input/output directly. Anyway, The person I was talking to said, I should install servo stabilizer because I have all this expensive stuff connected to it, which makes sense. I asked them if they made servo stabilizers and they said they did. I asked them for a quote, they said 90V-270V servo stabilizer will cost me ~43k including shipping+GST and I agreed to buy it. They didn't share any payment details or any other details. Then, I kept asking them for help in buying the stabilizer for multiple weeks and they never responded to me. TL;DR is, The technical support was quick to give up and shift blame. Their sales dept is useless. If they didn't want to make a sale, they could've just said so. I wasted weeks trying to get these idiots to respond when I could've gone with literally any of the dozen or hundred other companies in this space. These guys are unresponsive & rude. The product itself has multiple issues and I strongly recommend you look into alternatives. I almost forgot to mention. The product and their website has multiple other stupid issues. 1. They literally do not mention any technical details beyond what you can find in the title. This is in contrast to other companies that provide detailed tables with acceptable values for various technical parameters and also provide you with a copy of the test report when you get the product. 2. This product has 2 MCBs in the front. 1 for bypass and another to turn on the stabilizer. You'll find some warnings to not turn both of them on at the same time but you'll not find the reason. In one of the reviews(or it may have been aulten's website), I read that this is because it can cause a short circuit. These stupid people have made a product that goes into people's home(where it may be in reach of kids or people who just don't know any better) which has a flaw where turning on the only 2 buttons on the product will cause a short circuit! Do you really don't know of any better and safer way of implementing this!?? This is highly irresponsible and in my opinion a product like this should be taken off of amazon. Please avoid this and buy any other product. I personally picked a servo stabilizer from golden servo.

### ⭐⭐⭐⭐⭐ ⭐ Amazing Product, Truly Worth the Money! ⭐
*by R***R on 13 November 2025*

I purchased the AULTEN COPPER Mainline Voltage Stabilizer 5 KVA (90V–300V) AD014 during the Big Billion Day sale, and after using it for a good amount of time, I can confidently say that this product has exceeded my expectations. From the day it was delivered till today, I have not faced a single issue. I prefer reviewing products only after real usage, and this stabilizer has performed flawlessly. Since I live on rent, voltage fluctuation is very common here—especially during summers when the voltage drops continuously. Initially, I planned to buy a stabilizer only for my AC, but then I realized that stable voltage is equally important for other appliances in the house too. That’s when I decided to go for a mainline stabilizer, and choosing AULTEN turned out to be the right decision. The best part? At this price range, many brands like Voltas offer aluminium winding, but AULTEN provides copper winding, which is much more reliable and durable. This gives extra confidence that the entire house is protected from fluctuating voltage. 👉 My Suggestion: If you are reading this review and planning to buy a stabilizer, you can go for this one without any hesitation. It’s a solid investment for your home and definitely offers better value compared to many popular brands. Highly recommended!

## Frequently Bought Together

- AULTEN Copper Mainline Voltage Stabilizer for Home 5 KVA Heavy Duty 4000W 90V-300V AD014 (White)
- amiciSense 6 in 1 AC 40-300V 100A Digital Energy Meter, Frequency/Power Factor/Active Power/Current/Voltage Monitoring Device with Colorful LCD Display, Monitor Power Consumption (22kW)
- amiciSense Digital Hygrometer Thermometer, AS-55 Temperature and Humidity Monitoring Weather Station with Clock

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.pt/products/296825032-aulten-copper-mainline-voltage-stabilizer-for-home-5-kva-heavy](https://www.desertcart.pt/products/296825032-aulten-copper-mainline-voltage-stabilizer-for-home-5-kva-heavy)

---

*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-06-25*