Shelly 3 EM relay - Three-phase consumption meter

Shelly 3EM – Smart Three-Phase Energy Meter

The Shelly 3EM is a professional three-phase energy meter that allows you to monitor electricity consumption in real time and manage your installation efficiently and safely. Thanks to its three independent measurement channels, each up to 120 A , you can monitor both energy consumption and production, making it ideal for installations with solar panels, wind turbines, or industrial energy consumption .

With Shelly 3EM you can receive notifications when a device or system exceeds a predefined consumption threshold, protect your installation against overloads, and optimize the energy expenditure of your home or business.

Main features

• 3 independent measurement channels (up to 120 A each).

• Contactor control (max. 10 A).

• Real-time reporting of power, voltage, current, total energy, and power factor.

• 365-day internal memory in case of loss of Wi-Fi connection.

• Includes 3 x 120A current transformers .

• Compatible with the Shelly app , open protocols (MQTT, CoAP, REST API) and voice assistants ( Amazon Alexa and Google Assistant ).

• Protection against overconsumption and energy theft.

• It does not need a hub to work.

Technical specifications

• Power supply: 110–230V ±10%, 50/60Hz

• Self-consumption: < 1 W

• Operating temperature: 0°C to +40°C

• Connectivity: Wi-Fi 802.11 b/g/n (2.4 GHz)

• Range: up to 50 m outdoors / 30 m indoors

• Dimensions: 73 × 57 × 22 mm

Use cases

Energy optimization : control consumption in your home, business or industry to reduce costs and emissions.

Renewable energies : independently measures energy consumed and generated in installations with solar or wind panels .

Smart home automation : integrate electricity consumption into your Smart Home ecosystem to automate devices based on energy use.

Equipment protection : prevents damage to appliances or machinery by detecting voltage drops or power surges.

Shelly 3EM is the essential tool to take total control of your energy , optimizing costs, increasing security and adapting to any home automation system thanks to its open connectivity.