The Shelly 3EM-63T 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 mounted directly in the electrical panel, either above or below the circuit breaker, without occupying a separate module slot. 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, and is also easily integrable with other smart home platforms, supporting both fully local and cloud-based control.
The Shelly 3EM-63T Gen3 also supports photovoltaic system monitoring, making it an ideal solution for users who wish to track and optimize their solar energy production. The device performs 4-quadrant metering, ensuring precise measurement of both 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 consumption readings, along with Wi-Fi and Bluetooth connectivity. The choice between the two primarily depends on the installation environment and connection method:
- Shelly 3EM-63T Gen3: This model features flat terminals that allow direct phase connection to the breaker, with only the neutral needing to be wired. This design is ideal when connecting directly to the breaker, simplifying installation and reducing wiring complexity.
- Shelly 3EM-63W Gen3: This model includes wired connections, offering greater flexibility—especially when direct connection to the breaker isn't feasible. It allows more distant placement from the breaker, which can be useful in certain installation scenarios.
About the Shelly Brand
Shelly is a European brand (formerly Allterco Robotics) known worldwide for its high-quality smart home solutions. Shelly products are easily integrated into various home automation systems and are popular among both technology enthusiasts and professional users due to their reliability and open protocols.
Local or Cloud-Based Data Storage
The Shelly 3EM-63T Gen3 includes built-in memory, enabling local storage of energy consumption data directly on the device. You can access the data through the built-in web interface, allowing monitoring even without internet access. This is especially useful in environments with limited or no internet connectivity. Of course, if desired, the device can upload data to the Shelly Cloud, enabling long-term 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 measurement: Measurement via current transformers.
- Phase sequence error detection: Optional feature to detect incorrect phase order.
- No-load threshold: Warning for loads below 30 VA.
- Optical pulse indicator: Visual indicator of energy consumption.
- Real-time clock: Data timestamps remain accurate even without internet connection.
- Data logging: Stores data for up to 7 days locally, with 1-minute resolution.
- Accuracy class: Class B (IEC 62053-21) measurement accuracy.
- Photovoltaic-ready: Supports monitoring of solar power 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: Remote configuration and software-based control
- Event log: Logs data for up to 7 days, with 1-minute resolution
- Data export: Exportable in CSV and JSON formats
- Scheduling: Script and webhook-based automation
- Automations / Scenes: Shelly cloud-based scenes and automations, plus webhook and Home Assistant integrations
- Cloud vs. Local operation: Full functionality over both local network and cloud
Electrical Specifications
- Required power supply: 220–240 V~, 50/60 Hz
- Connection: Phase connected directly from breaker(s), neutral requires wired connection
- Wired connection: 3 phases + neutral
- Power consumption: max. 2 W
- Supported circuits: 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 both active and apparent energy metering
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
