# Electricity meter ORNO OR-WE-529 3-phase, 100 A, RS-485, MID, 4 DIN modules, TH-35mm, PV-ready

**URL:** https://aio.lv/en/product--orno-or-we-529--11785146
**Data updated:** 2026-03-08 22:56 (EET)
**Category:** Sensors & Detectors
**Manufacturer:** ORNO
**Manufacturer code:** OR-WE-529
**EAN:** 5908254846557
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 77.99 €
**Prices and availability valid until:** 2026-08-08 23:59
**Price without VAT (21%):** 64.45 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--orno-or-we-529--11785146

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 28.07.2026 | free |
| Pickup points | 31.07.2026 | 1.89 EUR |
| Courier delivery to door | 31.07.2026 | 4.99 EUR |

## Summary description

Three-phase DIN-rail electricity meter ORNO OR-WE-529, rated for up to 100 A per phase. MID-certified measurement device with RS-485 communication for remote reading and integration. Fits 4 standard DIN modules on TH-35mm rail and supports PV (photovoltaic) applications. Suitable for commercial and residential monitoring, billing and energy management.

## Long description

The ORNO OR-WE-529 is a three-phase DIN-rail electricity meter designed for accurate measurement of alternating current consumption up to 100 A per phase. This MID-certified device provides legal-for-trade measurement accuracy and integrates an RS-485 communication interface for remote reading and building-automation systems. The compact housing occupies 4 standard DIN modules and mounts on a TH-35 mm rail, making it suitable for residential and small commercial switchboards. The meter also supports photovoltaic (PV) installations by measuring import and export energy flows.
Advantages
The OR-WE-529 combines MID certification with a robust RS-485 interface, enabling reliable and legally compliant energy measurement together with remote data acquisition. Its 4-module footprint and TH-35 mm mounting simplify installation in standard distribution boards, while support for PV applications allows monitoring of bidirectional energy flow. The meter's design is compatible with common energy management systems and offers stable performance for continuous operation.
Suitable for
 Three-phase residential and commercial energy metering
 Billing and sub-metering in multi-tenant buildings
 Integration with building management systems via RS-485
 Monitoring of photovoltaic systems and net metering
Key specifications
 Measurement: three-phase alternating current (3-phase)
 Rated current: up to 100 A per phase
 Accuracy: MID-certified for legal-for-trade use
 Communication: RS-485 interface for remote reading and integration
 Form factor: 4 DIN-module width for TH-35 mm DIN rail mounting
 Functionality: supports import and export (PV-ready) energy measurement
How to use
Install the meter on a standard TH-35 mm DIN rail within a suitably rated distribution board. Connect the three phase conductors and neutral according to local wiring regulations and the installation diagram provided by the manufacturer. Configure the RS-485 connection and communication parameters to match the receiving data logger or building management system. Verify correct phase sequence, protective devices, and that the meter is accessible for reading and maintenance. Commission the meter according to local metering and safety requirements.
Usage recommendations
Place the meter in a dry, ventilated enclosure away from direct heat sources. Use appropriate circuit protection and qualified personnel for installation. Periodically check communication links and verify readings against expected energy use, especially when connected to photovoltaic systems where export and import flows occur.

## FAQ

### How much does the ORNO OR-WE-529 3-phase electricity meter 100A cost, and is it available for purchase?

The price is 77.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 28.07.2026 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 ORNO OR-WE-529 3-phase electricity meter 100A 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 ORNO 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 ORNO 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/11785146/67181243_large.webp