# Automatic three-phase voltage regulator KEMOT PROavr-30k 30 kVA 400 V

**URL:** https://aio.lv/en/product--kemot-urz3437-30--11082004
**Data updated:** 2025-12-31 15:51 (EET)
**Category:** Voltage Stabilizers
**Manufacturer:** KEMOT
**Manufacturer code:** URZ3437-30
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 1 012.49 €
**Prices and availability valid until:** 2026-07-26 23:59
**Price without VAT (21%):** 836.77 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--kemot-urz3437-30--11082004

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Courier delivery to door | 09.07.2026 | 53.99 EUR |

## Summary description

Three-phase automatic voltage regulator KEMOT PROavr-30k provides stabilisation for 400 V electrical networks with rated capacity 30 kVA. Designed to protect equipment from voltage fluctuations in industrial and commercial settings, it monitors and corrects supply voltage across phases automatically. Suitable for use with motors, compressors, control panels and sensitive electronics to ensure stable operation and reduce downtime.

## Long description

Automatic three-phase voltage regulator KEMOT PROavr-30k 30kVA 400V is designed to stabilise mains voltage and protect connected equipment by maintaining a stable 230 V output in single-phase operation and balanced voltages in three-phase mode. The device uses a toroidal transformer and servo-controlled regulation to correct both undervoltages and overvoltages and deliver a precise output with up to ±3% accuracy. It includes phase monitoring, overload and short-circuit protection, thermal protection and configurable start-up delay.
Advantages
The KEMOT PROavr-30k provides automatic voltage regulation with high output accuracy thanks to servo motor technology and a toroidal transformer design. It supports independent single-phase operation as well as three-phase balancing, and it isolates a faulty phase to prevent damage, indicating issues with a PHASE ERROR indicator. Additional features include a bypass switch for direct mains supply, adjustable DELAY switch-on delay (6–180 seconds) to protect against high inrush currents, and protections against over- and under-voltage, overload, overheating and short-circuit. Four sturdy wheels facilitate transport and placement.
Suitable for
Household appliances: induction hobs, microwave ovens, refrigerators and freezers
Home and office AV equipment: TVs, speakers, mini-towers and audio/video devices
Computers and office devices: PCs, monitors, printers, cash registers
Heating systems: central heating stoves and pump units
Electrical generators and other power sources requiring stabilisation
Key specifications
Model: KEMOT PROavr-30k (MPN URZ3437-30)
Power rating: 30 kVA
Input/nominal system voltage: three-phase 400 V
Output voltage (single-phase regulation): 230 V ±3%
Regulation method: servo motor with toroidal transformer
Start delay (DELAY): adjustable 6–180 seconds
Modes: independent single-phase operation and three-phase balanced operation
Protections: phase error detection, overvoltage/undervoltage, overload, overheating, short-circuit
Additional features: bypass switch, PHASE ERROR indicator, transport wheels
How to use
Install the stabiliser in a dry, ventilated location and connect it to the incoming three-phase mains according to the wiring diagram supplied by the manufacturer. For single-phase loads, connect the required phase outputs; each phase can operate independently. For three-phase loads, ensure all three input phases are connected and balanced. Use the DELAY switch to set a 6–180 second start-up delay when protecting devices with high inrush current. If a phase error is indicated, switch to bypass if needed and investigate the supplying phase before restoring normal operation. Follow the user manual for wiring, grounding and safety procedures.
Usage recommendations
Use the KEMOT PROavr-30k with equipment whose rated power does not exceed the stabiliser’s 30 kVA capacity, and set the DELAY function when connecting devices with high starting currents. Regularly inspect connections and ventilation openings, and do not operate the stabiliser with a missing or faulty phase in three-phase mode; instead rely on the device’s protection indicators and service the unit if an error appears.

## FAQ

### How much does the KEMOT PROavr-30k 30 kVA 400 V voltage regulator cost, and is it available for purchase?

The price is 1,012.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 32 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 06.07.2026 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 KEMOT PROavr-30k 30 kVA 400 V voltage regulator 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 KEMOT 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 KEMOT 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

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