# 3-phase Energy Meter HUAWEI DTSU666-HW — direct measurement up to 80 A

**URL:** https://aio.lv/en/product--huawei-dtsu666-hw--10794474
**Data updated:** 2026-06-25 19:49 (EEST)
**Category:** Solar Panel Accessories
**Manufacturer:** HUAWEI
**Manufacturer code:** DTSU666-HW
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 237.49 €
**Prices and availability valid until:** 2026-08-08 23:59
**Price without VAT (21%):** 196.27 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--huawei-dtsu666-hw--10794474

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 21.07.2026 | free |
| Pickup points | 24.07.2026 | 1.89 EUR |
| Courier delivery to door | 24.07.2026 | 4.99 EUR |

## Summary description

HUAWEI DTSU666-HW is a 3-phase energy meter for direct measurement up to 80 A. Designed for monitoring electrical energy in three-phase installations, it provides accurate metering of consumption and supports integration with compatible HUAWEI systems. Suitable for residential, commercial or small industrial solar and electrical setups where direct current measurement up to 80 A is required.

## Long description

The HUAWEI DTSU666-HW is a high-precision three-phase energy meter designed for comprehensive electrical monitoring in residential, commercial, and small industrial environments. This device enables accurate tracking of energy consumption and production, making it an essential component for optimizing solar power systems and managing electrical loads. It supports both direct measurement up to 80 A and semi-indirect measurement when paired with external current transformers, offering flexibility for various installation requirements.
Advantages
The primary benefit of this meter is its versatility in handling different current measurement methods, allowing it to adapt to diverse electrical setups. Its integration with HUAWEI systems ensures seamless data communication and reliable performance for energy management. The inclusion of an integrated LCD display provides immediate visual feedback on energy metrics, while the compact design facilitates easy installation on standard TH rails within electrical cabinets. The robust construction ensures long-term reliability and consistent accuracy in monitoring three-phase four-wire systems.
Suitable for
Residential solar power installations
Commercial energy consumption monitoring
Small industrial electrical setups
Systems requiring direct current measurement up to 80 A
Integration with compatible HUAWEI energy management platforms
When it may not be suitable
This device is not intended for high-voltage industrial applications exceeding its specified current or voltage ratings. It may not be suitable for installations where space is extremely limited, as it requires a switchgear depth of more than 80 mm for proper mounting.
Key specifications
Phase type: 3-phase, 4-wire
Measurement range: Direct up to 80 A
Secondary current support: 1 A or 5 A (via external transformers)
Communication interface: RS485
Display: Integrated LCD
Mounting: TH rail
Required switchgear depth: Greater than 80 mm
How to use
The meter should be installed by a qualified professional within a standard electrical switchgear cabinet on a TH rail. Ensure that the switchgear depth is sufficient to accommodate the device. Connect the power lines according to the wiring diagram provided in the technical manual, ensuring that the RS485 communication cables are correctly terminated for integration with your energy management system. Once powered, the LCD display will activate, allowing you to cycle through the measured parameters.
What to consider before purchase
Verify that your electrical installation is a 3-phase 4-wire system.
Ensure your switchgear cabinet has a depth of at least 80 mm.
Confirm compatibility with your existing HUAWEI inverter or energy management system.
Check if your current load requires direct measurement or if external transformers are necessary.
Usage recommendations
For optimal performance and safety, always ensure that the device is installed in a dry, dust-free environment and that all electrical connections are tightened to the specified torque settings. Regularly check the RS485 connection to maintain consistent data reporting to your monitoring platform.

## FAQ

### How much does the 3-phase Energy Meter HUAWEI DTSU666-HW cost, and is it available for purchase?

The price is 237.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 21.07.2026 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. All transactions are 100% secure and encrypted.

### Can 3-phase Energy Meter HUAWEI DTSU666-HW 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 HUAWEI 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 HUAWEI 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/10794474/60042557_large.webp