The Shelly 3EM-63W Gen3 is an advanced three-phase energy metering device, specifically designed to accurately monitor electrical energy consumption across three separate phases or three independent single-phase circuits. Thanks to its compact design, it can be installed directly on the wiring of circuit breakers in the electrical panel, without occupying a separate DIN module space. It is an ideal choice for both residential and industrial applications.
The device provides real-time data on voltage, current, power, and power factor, allowing users to optimize their energy usage and reduce costs. With built-in Wi-Fi and Bluetooth connectivity, it can be used with the Shelly cloud smart system, or easily integrated into other smart home platforms, supporting both fully local and cloud-based control.
The Shelly 3EM-63W Gen3 also supports photovoltaic system monitoring, making it an ideal solution for those who want to track and optimize their solar energy production. The device performs 4-quadrant metering to ensure accurate measurement of both energy consumption and generation across all three phases.
Two Similar Models: Shelly 3EM-63T Gen3 and 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 measurement, as well as Wi-Fi and Bluetooth connectivity. The choice between the two models mainly depends on installation environment and wiring style:
- Shelly 3EM-63T Gen3: This model has flat connectors that allow direct phase connection to the breaker, requiring only the neutral conductor to be wired. This design is ideal for direct connection to the breaker, simplifying installation and reducing wiring needs.
- Shelly 3EM-63W Gen3: This model comes with wired connections, offering more flexibility for installation, especially when the device cannot be connected directly to the breaker. This design allows for remote placement from the breaker, useful in specific installation scenarios.
About the Shelly Brand
Shelly is a European smart home brand (formerly Allterco Robotics), globally known for its high-quality smart home solutions. Shelly products are easily integrated into various home automation systems and are popular among both tech enthusiasts and professional users thanks to their reliability and open protocols.
Local or Cloud-Based Data Storage
The Shelly 3EM-63W Gen3 features built-in memory that allows local storage of energy consumption data directly on the device. Data can be accessed through the built-in web interface, enabling monitoring even without an internet connection. This is particularly useful in environments with limited or no internet access. Of course, if preferred, the device can upload data to the Shelly Cloud. This allows long-term data storage, remote access, and integration with other smart home systems.
Main Product Features
- 4-quadrant metering: Accurate measurement of energy consumption and generation on all three phases.
- Multiple connection options: Supports three-phase or single-phase installations.
- Non-invasive current sensing: Measurement via current transformers.
- Phase sequence error detection: Optional function for detecting incorrect phase order.
- No-load threshold alert: Warning for loads below 30 VA.
- Optical pulse indication: Visual indication of energy consumption.
- Real-time clock: Timestamp accuracy maintained even without internet connection.
- Data logging: Stores up to 7 days of data locally, with 1-minute resolution.
- Accuracy class: Class B measurement accuracy (IEC 62053-21).
- Photovoltaic-ready: Supports monitoring of solar energy systems.
Smart Home Protocols and Platform Compatibility
- Supported protocols: Wi-Fi (802.11 b/g/n), Bluetooth 4.2
- Local control: Via built-in web interface and mobile app.
- Factory platform: Shelly Smart Control mobile app and web interface.
- Cloud platform integrations: SmartThings, Google Home, Amazon Alexa
- Third-party compatibility: Home Assistant, Athom Homey, etc.
- Integration options: MQTT, HTTP API, WebSocket, Webhooks
- Voice control: Google Assistant, Amazon Alexa
Smart Features
- Remote status monitoring: Voltage, current, power, power factor.
- Remote control: Device configuration and software control from a distance.
- Event log: Logs data for up to 7 days, in 1-minute intervals.
- Data export: Exportable in CSV and JSON formats.
- Scheduling: Operation based on scripts and webhooks.
- Automations / Scenes: Cloud-based scenes and automations via Shelly, or webhook-based automation through Home Assistant.
- Cloud vs Local operation: Full functionality both via local network and cloud.
Electrical Features
- Required operating voltage: 220–240 V~, 50/60 Hz
- Wiring: 4-wire: 3 phases + neutral
- Power consumption: max. 2 W
- Number of circuits supported: 3 independent single-phase or one three-phase system
- Current measurement range: 0–63A
- Voltage measurement: 220–240 V~ with ±1% accuracy
- Energy measurement: Supports active and apparent energy measurement
Other Specifications
- Product segment: 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
