Shelly 3EM-63T Gen3 Smart Wi-Fi 3-phase Power Meter

Shelly 3EM-63T Gen3 is an advanced three-phase electricity metering device specifically designed to accurately monitor electricity consumption on three separate phases or three independent single-phase circuits. Due to its compact design, it can be directly installed in the electrical cabinet, either above or below the circuit breaker, without the need for an additional module. It is ideal for both domestic and industrial applications.

The device displays real-time data on voltage, current, power and power factor, allowing users to optimise energy consumption and reduce costs. With built-in Wi-Fi and Bluetooth connectivity, it is compatible with Shelly's cloud-based smart home system, while it is also easy to integrate with other smart home platforms, supporting both local and cloud-based management.

The Shelly 3EM-63T Gen3 also supports PV system monitoring, making it the ideal solution for users who want to monitor and optimise their solar energy. The device performs measurements in four quadrants, ensuring accurate measurement of both consumption and production on all three phases.

Two similar models: the Shelly 3EM-63T Gen3 and the Shelly 3EM-63W Gen3

Both models share the same technical specifications, including three-phase or three single-phase circuit monitoring, real-time voltage, current, power and consumption measurements, and Wi-Fi and Bluetooth connectivity. The choice between the two depends mainly on the installation environment and the way they are connected:

• Shelly 3EM-63T Gen3: This model has straight connectors that allow direct connection of the phases to the circuit breaker, with only the neutral conductor needing to be wired. This design simplifies installation and reduces wiring complexity.
• Shelly 3EM-63W Gen3: This model has wired connections which offer more flexibility, especially if a direct connection to the circuit breaker is not possible. It also allows remote installation from the circuit breaker, which can be useful in certain situations.

About the Shelly brand

Shelly is a European brand (formerly Allterco Robotics), world-renowned for high-quality smart home solutions. Shelly products integrate easily into a variety of home automation systems and are popular with both tech enthusiasts and professionals for their reliability and open protocols.

Local or cloud storage

The Shelly 3EM-63T Gen3 has on-board memory that allows local storage of energy consumption data directly on the device. The data can be accessed via the built-in web interface, allowing monitoring even without an internet connection. This is particularly useful in environments with limited or no internet connectivity. Of course, the device can also upload the data to the Shelly Cloud if desired, allowing long-term storage, remote access and integration with other smart home systems.

Main product features

• Measurements in four quadrants: Accurate measurement of energy consumption and production at all three stages.
• More connection options: Support for three-phase or single-phase installations.
• Non-invasive current measurement: Measurements via current transformers.
• Warning for incorrect phase sequence: Optional function for detecting incorrect phase sequence.
• No-load limit: Warning for loads below 30 VA.
• Optical flashing indicator: Visual display of energy consumption.
• Real-time clock: Data timestamps are accurate even without an internet connection.
• Recording data: Local data storage up to 7 days with 1 minute resolution.
• Measurement accuracy: Class B (IEC 62053-21).
• Ready for photovoltaics: Support for monitoring solar power plants.

Smart home protocols and platform compatibility

• Supported protocols: Wi-Fi (802.11 b/g/n), Bluetooth 4.2
• Local governance: Through a built-in web interface and mobile app.
• The original platform: Shelly Smart Control mobile app and web interface.
• Cloud integrations: SmartThings, Google Home, Amazon Alexa
• Compatibility with others: Home Assistant, Athom Homey, etc.
• Integration options: MQTT, HTTP API, WebSocket, Webhooks
• Voice control: Google Assistant, Amazon Alexa

Smart features

• Remote monitoring: Voltage, current, power, power factor
• Remote management: Remote configuration and management software
• Event diary: Record up to 7 days of data with 1 minute resolution
• Export data: Export in CSV and JSON formats
• Scheduling: Automation with scripts and webhooks
• Automations / Scenes: Shelly cloud scenes, webhook integration and Home Assistant support
• Cloud or local: Full functionality over both local network and cloud platform

Electrical specifications

• Power supply required: 220-240 VAC, 50/60 Hz
• Link: The phases are connected directly from the circuit breaker and the neutral lead must be wired
• Wired connection: 3 phases + neutral conductor
• Energy consumption: max. 2 W
• Supported circuits: 3 independent single-phase or one three-phase system
• Current measurement range: 0-63A
• Voltage measurement: 220-240 VAC with ±1% accuracy
• Energy measurement: Support for active and virtual energy

Other specifications

• Product segment: Also recommended for professional use
• Dimensions: 31 x 54 x 42 mm
• Built-in temperature sensor: Yes
• Wireless range:
  Wi-Fi: 30 m indoors, 50 m outdoors;
  Bluetooth: 10 m indoors, 30 m outdoors