# Three-phase electronic energy meter QOLTEC 50900 400V LCD 4P

**URL:** https://aio.lv/en/product--qoltec-50900--10478523
**Data updated:** 2026-02-12 21:57 (EET)
**Category:** Sensors & Detectors
**Manufacturer:** QOLTEC
**Manufacturer code:** 50900
**EAN:** 5901878509006
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 30.49 €
**Prices and availability valid until:** 2026-07-11 23:59
**Price without VAT (21%):** 25.20 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--qoltec-50900--10478523

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 22.06.2026 | free |
| Pickup points | 29.06.2026 | 1.99 EUR |
| Courier delivery to door | 29.06.2026 | 4.99 EUR |

## Summary description

Three-phase electronic energy meter QOLTEC 50900 is designed for measuring electrical energy in three-phase systems. Rated for 400 V and configured as 4-pole (4P) with an LCD display, it provides accurate consumption readings for residential or commercial installations. Suitable for monitoring energy use, billing and system diagnostics where a digital meter with clear readout is required.

## Long description

Three-phase electronic energy meter QOLTEC 50900 400V LCD 4P is designed to measure active electrical energy in three-phase power systems. Configured as a 4-pole device with an LCD display, it provides meter readings suitable for residential and light commercial installations. The meter operates at a rated voltage of 400 V and presents consumption values on a clear liquid crystal display for straightforward monitoring and recording.
Advantages
The QOLTEC 50900 combines a digital LCD readout and a four-pole design to deliver accurate energy measurements in three-phase circuits. Its electronic measurement principle reduces moving parts compared with electromechanical meters, improving long-term stability and readout clarity. The compact form factor and standard mounting make it compatible with common electrical panels where a reliable digital meter is required for consumption tracking, billing, or diagnostics.
Suitable for
 Measuring active energy consumption in three-phase residential installations
 Monitoring consumption in small commercial premises and offices
 Use in distribution boards for billing and submetering
 Basic energy diagnostics and verification of supply usage
Key specifications
 Type: Three-phase electronic energy meter
 Rated voltage: 400 V
 Poles: 4P (four-pole configuration)
 Display: LCD for numeric consumption readout
 Measured quantity: Active electrical energy
How to use
Install the QOLTEC 50900 in the electrical panel following local electrical codes and safety practices. Connect the three-phase supply conductors to the appropriate terminals and ensure the neutral and protective connections are made as required. After wiring, the LCD display will show accumulated energy consumption; record readings as needed for billing or monitoring. Periodically check terminal tightness and display operation to ensure continued accurate measurement.
Recommendations for use
For reliable operation, have installation and any maintenance performed by a qualified electrician. Ensure the meter is mounted in a dry, ventilated location away from direct heat sources, and verify that the device polarity and phase sequence correspond to site wiring. Use the meter alongside appropriate overcurrent protection and adhere to national regulations when using readings for billing.

## FAQ

### How much does the Three-phase electronic meter QOLTEC 50900 400V cost, and is it available for purchase?

The price is 30.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 638 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 22.06.2026 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. All transactions are 100% secure and encrypted.

### 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/10478523/52553474_large.webp