# Qoltec Three-phase AVR voltage stabilizer Multiprotection 30kVA 3% accuracy servo motor LCD Expert Line

**URL:** https://aio.lv/en/product--qoltec-51909--12649778
**Data updated:** 2026-09-05 04:22 (EEST)
**Category:** Other goods
**Manufacturer:** QOLTEC
**Manufacturer code:** 51909
**EAN:** 5901878519098
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 1 262.99 €
**Prices and availability valid until:** 2026-10-19 23:59
**Price without VAT (21%):** 1 043.79 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--qoltec-51909--12649778

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 29.09.2026 | free |
| Courier delivery to door | 02.10.2026 | 53.99 EUR |

## Summary description

Ensure stable power supply for demanding electrical equipment with the Qoltec three-phase AVR voltage stabilizer Multiprotection. Featuring a 30kVA capacity, high regulation accuracy of ±3%, a reliable 3F servo motor system, and an intuitive LCD display from the Expert Line series, this device effectively protects sensitive machinery and appliances from voltage fluctuations and power surges in industrial and commercial applications.

## Long description

The Qoltec Three-phase AVR voltage stabilizer Multiprotection 30kVA 3% accuracy servo motor LCD Expert Line is designed to ensure a stable power supply for demanding electrical equipment. Featuring a 30kVA capacity, high regulation accuracy of ±3%, and a reliable 3F servo motor system, this device from the Expert Line series effectively protects sensitive machinery and appliances from voltage fluctuations and power surges in industrial and commercial environments.
Advantages
This three-phase voltage stabilizer provides continuous monitoring and automatic correction of input voltage to deliver a steady output. The integrated servo motor system ensures smooth and precise adjustments, while the clear LCD display offers real-time operational status and diagnostic information. Built with comprehensive multiprotection features, it safeguards connected devices against overvoltage, undervoltage, overload, and short circuits, thereby extending the operational lifespan of valuable electrical infrastructure.
Suitable for
Industrial machinery and automated production lines
Commercial office buildings with sensitive IT and HVAC equipment
Medical and laboratory devices requiring stable power
Telecommunication installations and server rooms
When it may not be suitable
This device is not designed for residential households with standard power requirements where a single-phase stabilizer would be sufficient. It is also unsuitable for outdoor installations without adequate weather protection or environments exceeding the specified operating temperature and humidity limits of the equipment.
Key specifications
30kVA capacity
Three-phase operation
±3% regulation accuracy
Servo motor technology
Equipped with an LCD display
Expert Line series
How to use
Installation should be performed by qualified electrical personnel in accordance with local electrical codes and safety regulations. Connect the three-phase input power supply to the designated terminals of the stabilizer and wire the output to the protected load distribution panel. Ensure the unit is properly grounded before powering it on. Once energized, the internal servo motor and control board will automatically regulate the output voltage, and operational parameters can be monitored via the front-facing LCD screen.
What to consider before purchase
Verify that the total power consumption of your connected equipment does not exceed the 30kVA capacity of the stabilizer.
Check your incoming power grid specifications to ensure compatibility with three-phase input requirements.
Ensure adequate physical space and proper ventilation in the installation area to accommodate the dimensions and cooling needs of the unit.
Usage recommendations: Regularly inspect the input and output wiring connections for tightness and signs of wear. Keep the ventilation openings free from dust and obstructions to maintain optimal operating temperatures and ensure long-term reliability of the servo motor system.

## FAQ

### How much does the Qoltec Multiprotection 30kVA 3F Voltage Stabilizer cost, and is it available for purchase?

The price is 1,262.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 29.09.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment, Leasing for legal entities. All transactions are 100% secure and encrypted.

### Can Qoltec Multiprotection 30kVA 3F Voltage Stabilizer be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All QOLTEC products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized QOLTEC service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12649778/69823165_large.webp