# Three-phase energy meter FF Energy-3-OPTI-100 (model WI-MEF-3-OPTI-200)

**URL:** https://aio.lv/en/product--ff-wi-mef-3-opti-200--11784904
**Data updated:** 2026-03-08 22:56 (EET)
**Category:** Sensors & Detectors
**Manufacturer:** FF
**Manufacturer code:** WI-MEF-3-OPTI-200
**EAN:** 5902431676258
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 220.99 €
**Prices and availability valid until:** 2026-08-06 23:59
**Price without VAT (21%):** 182.64 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ff-wi-mef-3-opti-200--11784904

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 27.07.2026 | free |
| Pickup points | 30.07.2026 | 1.89 EUR |
| Courier delivery to door | 30.07.2026 | 4.99 EUR |

## Summary description

Three-phase energy meter FF Energy-3-OPTI-100, model WI-MEF-3-OPTI-200, designed to measure active energy consumption in three-phase electrical systems. Provides accurate metering for industrial or commercial installations, supports standard connection for three-phase circuits, and is suitable for monitoring energy use, billing, and load management in buildings and facilities.

## Long description

FF Energy-3-OPTI-100 (model WI-MEF-3-OPTI-200) is a three-phase energy meter designed to measure active energy consumption in three-phase electrical systems. It provides accurate, continuous metering suitable for industrial and commercial installations, allowing operators to monitor energy use, verify billing, and manage electrical loads in buildings and facilities. The meter supports standard three-phase connection schemes and is intended for fixed installation in distribution boards or energy monitoring cabinets.
Advantages
The meter delivers precise active energy measurement with stable performance under typical industrial load conditions. Its compact design enables straightforward mounting on DIN rails, while clear terminal arrangement simplifies wiring and reduces installation time. The device is built to provide reliable long-term operation for monitoring and billing applications and integrates easily into existing electrical systems.
Suitable for
Monitoring energy consumption in factories and workshops
Billing and submetering in commercial buildings
Load management in multi‑tenant or multi‑circuit installations
Integration into energy management systems and monitoring panels
Key specifications
Measurement type: active energy (three-phase)
Connection: standard three-phase wiring suitable for fixed installation
Mounting: DIN rail compatible enclosure for panel mounting
Accuracy: metering class suitable for industrial/commercial applications
Display and interfaces: clear terminal layout for wiring and readout provisions
Operating environment: intended for indoor electrical distribution boards
How to use
Install the meter in a distribution board on a DIN rail and connect according to the standard three-phase wiring diagram, observing correct phase sequence and protective earth connections. Ensure the supply and load are isolated before wiring. After installation, verify connections, restore power, and confirm that the meter records active energy by checking the display or readout points. Use the meter for continuous monitoring; record or integrate readings into billing or energy management systems as required.
Usage recommendations
Follow local electrical codes and safety standards during installation and maintenance. Use a qualified electrician for mounting and wiring, verify protection devices are correctly rated for the installation, and perform periodic checks to ensure accuracy and secure connections.

## FAQ

### How much does the Three-phase energy meter FF WI-MEF-3-OPTI-200 cost, and is it available for purchase?

The price is 220.99 € (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 27.07.2026 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 Three-phase energy meter FF WI-MEF-3-OPTI-200 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 FF 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 FF 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/11784904/67181026_large.webp