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

The Shelly 3EM-63W Gen3 is an advanced three-phase energy metering device specifically designed to accurately monitor power consumption on three separate phases or three independent single-phase circuits. Due to its compact design, it can be mounted directly on the wiring of circuit breakers in the electrical distribution panel, without the need for a separate DIN module location. It is ideal for both residential and industrial applications.

The device provides 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 can be used with Shelly's cloud-based smart home system or easily integrated into other smart home platforms, supporting both fully local and cloud-based management.

The Shelly 3EM-63W Gen3 also supports PV system monitoring, making it the ideal solution for users who want to monitor and optimise their solar energy production. The device performs metering in 4 quadrants, ensuring accurate measurement of energy consumption and production on all three phases.

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

Both models offer the same technical specifications, including monitoring of three-phase or three single-phase circuits, real-time voltage, current, power and energy measurements, and Wi-Fi and Bluetooth connectivity. The choice between the two depends primarily on the installation environment and the way they are wired:

• Shelly 3EM-63T Gen3: This model has straight connectors that allow a direct phase connection to the circuit breaker, with only the neutral conductor needing to be wired. This design is ideal for direct connection to the circuit breaker, simplifying installation and reducing wiring complexity.
• Shelly 3EM-63W Gen3: This model is equipped with wired connections, which allows greater flexibility in installation, especially if the device cannot be connected directly to the circuit breaker. This design allows remote installation from the circuit breaker, which is useful in certain situations.
  

About Shelly

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

Local or cloud storage

The Shelly 3EM-63W 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 access. Of course, if you wish, the device can also transfer the data to the Shelly cloud, allowing long-term storage, remote access and integration with other smart home systems.

Main product features

• Measurement in 4 quadrants: Accurate measurement of energy consumption and production at all three stages.
• More connection options: Supports three-phase or single-phase installations.
• Non-invasive current measurement: Measurement via current transformers.
• Phase sequence error detection: Optional function to detect incorrect phase sequence.
• Low load warning: Warning for loads below 30 VA.
• Optical pulse indicator: Visual display of energy consumption.
• Real-time clock: Accurate time stamps even without an internet connection.
• Data storage: Local data storage for up to 7 days with 1 minute resolution.
• Accuracy class: 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.
• Factory platform: Shelly Smart Control mobile app and web interface.
• Integrations with cloud platforms: SmartThings, Google Home, Amazon Alexa
• Compatibility with third parties: 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 software management.
• Event diary: Data logging up to 7 days at 1 minute intervals.
• Export data: Export to CSV and JSON formats.
• Planning: Script-based and webhook-based.
• Automations / Scenes: Cloud scenes and Shelly automation, and automation via webhooks and Home Assistant.
• Cloud and local operation: Full functionality via local network and cloud.

Electrical characteristics

• Tension required: 220-240 VAC, 50/60 Hz
• Wiring: 4-wire: 3 phases + neutral conductor
• Power consumption: maximum 2 W
• Supported circuits: 3 independent single-phase or one three-phase circuit
• Current measurement range: 0-63 A
• Voltage measurement: 220-240 VAC with ±1 accuracy %
• Measuring energy: Support for active and apparent energy measurement

Other specifications

• Product segment: Also recommended for professional use
• Dimensions: 21 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