Shelly 3EM three-phase energy meter relay

Name: Shelly 3EM three-phase energy meter M0000004
Brand: Shelly
SKU: 4855192
Price: 101.49 EUR
Availability: InStock

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Shelly 3EM three-phase energy meter / relay, White, Wi‑Fi 2.4 GHz, 73×57×22 mm

Shelly 3EM three-phase energy meter relay Photo 1

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Short description

Shelly 3EM is a compact three‑phase energy meter and relay in white housing. It supports 2.4 GHz Wi‑Fi (802.11b/g/n) for remote monitoring and control. With dimensions 73×57×22 mm it fits electrical cabinets and DIN mounts. Use it to measure and manage three‑phase power consumption, monitor loads remotely, and automate energy control in homes or small commercial installations.

Available for order: 1 pcs.

Warranty: 2 Years

SKU: 4855192

Manufacturer: Shelly

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2b. Kengaraga str., Riga, Latvia, LV-1063

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From 4.99 € (Weight: 0.36 kg)

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36 months installment: from 2.82 euros per month

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Product information

Description

Shelly 3EM three-phase energy meter / relay is a compact white device designed for monitoring and controlling three-phase electrical systems over 2.4 GHz Wi‑Fi. Measuring 73×57×22 mm, it is built to fit into electrical cabinets and DIN mounts for residential and small commercial installations. The unit combines metering and relay (contactor control) functions, enabling measurement of power consumption, energy generation from sources such as solar panels, and remote switching of circuits through a Wi‑Fi connection.

Advantages

The device provides precise three-phase measurements and integrated relay control in a single compact enclosure, reducing the need for separate meters and contactors. Wi‑Fi connectivity (802.11b/g/n at 2.4 GHz) allows remote access to live data and control without additional gateways. Its slim profile and standard mounting footprint enable easy installation in cabinets or on DIN rails, while the combination of monitoring and switching supports automated energy management and load protection.

Suitable for

Monitoring overall household or small commercial three-phase energy consumption
Measuring generated electricity from rooftop solar systems
Remote switching and contactor control of heavy loads or circuits
Integration into energy automation for HVAC, lighting, and industrial appliances

Key specifications

Functionality: three‑phase energy metering and relay/contactor control
Connectivity: Wi‑Fi 2.4 GHz (802.11b/g/n)
Form factor: compact white housing suitable for DIN mounting
Dimensions: 73 × 57 × 22 mm
Measurements: real‑time power and energy monitoring for three phases
Control: remote on/off switching of connected circuit via built‑in relay

How to use

Install the Shelly 3EM into an electrical cabinet or DIN rail according to local electrical regulations and wiring diagrams supplied by the manufacturer. Connect the three phase lines and neutral as required for metering, and wire the relay output to the circuit or contactor you intend to control. Configure the device on the local 2.4 GHz Wi‑Fi network using the Shelly app or web interface to enable monitoring, logging, and remote switching. Use the app or integrated API to view real‑time power, cumulative energy, and to schedule or trigger the relay based on measured values.

Usage recommendations

Ensure installation is performed by a qualified electrician. Verify that the device specifications match your system voltage and current ratings before connection. For reliable remote access, place the device within stable 2.4 GHz Wi‑Fi coverage and isolate control of heavy inductive loads via an appropriate contactor or starter as required.

All features

Dimensions (WxDxH):: 73 x 57 x 22
Wi-Fi standards:: Wi-Fi 4 (802.11n), 802.11g, 802.11b
Operating temperature (T-T):: -40 - 40
Product colour:: White
Overload protection:: No
Channels quantity:: 3 channels
Overheat protection:: No
Wi-Fi:: Yes
Remotely operated:: Yes
Maximum indoor range:: 30 m
Sunrise/sunset time:: Yes
Number of modules:: 1
Transmit power:: 1 mW
Transmission range:: 30 - 50
Wi-Fi frequency:: 2.4 GHz
Weekly schedule:: Yes
Intelligent On/Off:: Yes

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Customer questions

FAQ

How much does the Shelly 3EM three-phase energy meter relay cost, and is it available for purchase?

The price is 101.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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, Installment. All transactions are 100% secure and encrypted.

Can Shelly 3EM three-phase energy meter relay be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. We work with leading banks and leasing companies in Latvia, allowing you to make your purchase on convenient terms — with a minimal down payment and a repayment period from 3 to 36 months. You can apply for credit or installments for the Shelly 3EM three-phase energy meter relay online, and the application process is as simple as possible:

Select the product on the website and add it to your cart;
When placing your order, choose the payment method “Installments”;
Fill in the required details for the lending partner;
Receive a decision within a few minutes.

For more information about available payment options, interest-free installment terms, and credit conditions in Latvia, please visit the Payment page.

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 Shelly 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 Shelly 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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

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