# Legrand 412051 EMDX3 Network Analyzer with RS485 Interface

**URL:** https://aio.lv/en/product--legrand-412051--12450402
**Data updated:** 2026-05-18 02:47 (EEST)
**Category:** Sensors & Detectors
**Manufacturer:** Legrand
**Manufacturer code:** 412051
**EAN:** 3414970742186
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 740.49 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 611.98 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--legrand-412051--12450402

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

The Legrand 412051 EMDX3 is a professional network analyzer designed for monitoring and measuring electrical parameters in industrial or commercial installations. Featuring an RS485 communication interface, this device allows for efficient data transmission and integration into energy management systems. It is designed for mounting on a TH35 DIN rail, ensuring reliable performance and precise monitoring of power consumption and network quality.

## Long description

The Legrand 412051 EMDX3 is a professional network analyzer engineered for the precise monitoring and measurement of electrical parameters within industrial and commercial electrical installations. This device provides comprehensive visibility into power consumption and network quality, facilitating efficient energy management. Equipped with an RS485 communication interface, it supports seamless integration into building management systems for remote data acquisition and analysis.
Advantages
This network analyzer offers high-precision measurement capabilities with a 0.5 accuracy class, ensuring reliable data for energy auditing and operational efficiency. The inclusion of an LCD display allows for immediate local monitoring of electrical values, while the support for harmonic analysis up to the 25th order helps in identifying power quality issues. Its modular design for DIN rail mounting simplifies installation in standard electrical cabinets, and the programmable alarm functionality provides proactive notification of threshold violations, enhancing system safety and maintenance planning.
Suitable for
Industrial energy management systems
Commercial building power monitoring
Electrical distribution panel integration
Energy consumption auditing and reporting
Power quality analysis and harmonic monitoring
This device may not be suitable for residential applications where space is extremely limited or where advanced energy management software integration is not required. It is also not intended for direct high-voltage measurement without the use of appropriate current transformers.
Key specifications
Mounting: TH35 DIN rail
Width: 4 modules (78 mm)
Display: Integrated LCD
Accuracy class: 0.5
Communication: RS485 and pulse output
Measurement parameters: Current, voltage, frequency, active/reactive/apparent power, power factor, active/reactive energy
Harmonic analysis: Up to 25th order (via Modbus)
Metering: 4-tariff capability
Alarm functions: Programmable for all measured values
How to use
The Legrand 412051 is designed for installation on a standard TH35 DIN rail within an electrical distribution board. Connection to the electrical network requires the use of external current transformers to measure current values safely and accurately. Once installed, the device can be configured via the front interface to set up specific measurement parameters and alarm thresholds. For remote data collection, the RS485 interface should be connected to a compatible energy management system using the Modbus protocol, allowing for continuous monitoring and logging of electrical data.
What to consider before purchase
Ensure the electrical panel has 4 modules of available space on the DIN rail.
Verify that compatible current transformers are available for your specific installation requirements.
Confirm that your energy management system supports the Modbus communication protocol via RS485.
Check if the 4-tariff metering feature aligns with your local utility billing structure.
Usage recommendations: Regularly verify the integrity of the RS485 communication wiring to ensure uninterrupted data transmission. It is recommended to perform periodic checks of the programmed alarm thresholds to ensure they remain relevant to the current operational requirements of the facility.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.243 kg |
| Height | 87 mm |
| Width | 78 mm |
| Depth | 100 mm |
| Quantity per pack | 1 pc(s) |

## FAQ

### How much does the Legrand 412051 EMDX3 Network Analyzer cost, and is it available for purchase?

The price is 740.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 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 03.07.2026 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 Legrand 412051 EMDX3 Network Analyzer 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 Legrand 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 Legrand 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

### Where can I download the instructions for Legrand 412051 EMDX3 Network Analyzer?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/12450402/68777561_large.webp