Introduction
The Shelly Pro 3EM (400A) is a Wi-Fi and LAN-enabled 3-phase smart energy meter designed for precise monitoring of energy consumption and production. This DIN-mountable device offers 1% active energy measurement accuracy, making it suitable for tracking energy use in homes, offices, and industrial settings. It supports 2-way consumption measurement, ideal for solar panel installations, and includes Bluetooth gateway functionality for expanded smart home connectivity.
Image: Shelly Pro 3EM (400A) device overview, highlighting its compact design and connectivity options.
Setup
1. What's in the Box
- 1 x Shelly Pro 3EM (400A) device
- 3 x 120A Current Transformers (CTs)
2. Physical Installation
The Shelly Pro 3EM is designed for DIN-rail mounting within an electrical panel. Ensure the main power supply is turned off before beginning installation. Mount the device securely on a standard DIN rail.
Image: Shelly Pro 3EM (400A) securely mounted on a DIN rail, demonstrating its suitability for professional electrical installations.
3. Electrical Connection
Connect the three 120A Current Transformers (CTs) to the respective phases of your electrical system. Ensure correct polarity and secure connections. Connect the main power supply to the device terminals as indicated in the wiring diagram. It is highly recommended that a qualified electrician performs the electrical installation to ensure safety and compliance with local regulations.
Image: Detailed wiring diagram for the Shelly Pro 3EM (400A), showing connections for current transformers and power supply.
4. Network Connection
The Shelly Pro 3EM supports both Wi-Fi and LAN connectivity. For initial setup, connect the device to your local network via Ethernet cable or configure Wi-Fi settings through the Shelly Smart Control App. Ensure the device has a stable internet connection for cloud services and remote access.
Operating
1. Initial Configuration with Shelly Smart Control App
Download the Shelly Smart Control App from your device's app store. Follow the in-app instructions to add your Shelly Pro 3EM. The app will guide you through the initial setup, including naming your device and assigning it to a room or zone.
2. Energy Monitoring
The device provides real-time and historical energy consumption data. You can monitor 2-way consumption (produced and used energy) for each of the three phases. Access detailed graphs and reports for up to 60 days of historical data through the Shelly Smart Control App or web interface.
Image: Screenshot of the Shelly Pro 3EM (400A) monitoring interface, showing dual monitoring capabilities for energy consumption and production.
3. Automation Features
Utilize scripting functionalities to control other Shelly or Wi-Fi devices on your local network. Set exact parameters for heating, cooling, or electric vehicle charging based on energy data. The device also supports MODBUS for industrial integration.
Image: Illustration of Shelly Pro 3EM (400A) local control capabilities, showing a laptop and Wi-Fi router, indicating network-based automation.
4. Solar Panel Monitoring and Control
Keep track of energy generated by solar panels or wind turbines. The Shelly Pro 3EM provides real-time information about system efficiency and historical data, allowing for optimized energy management and savings.
Image: Solar panels and wind turbines under a clear sky, representing the Shelly Pro 3EM (400A)'s capability for solar and wind energy management.
Video: Shelly - Energy and Power Monitoring. This video demonstrates how Shelly devices, including the Pro 3EM, can be used for comprehensive energy and power monitoring in various settings.
Maintenance
1. General Care
Keep the device clean and free from dust. Ensure proper ventilation around the electrical panel where the device is installed. Avoid exposing the device to extreme temperatures or moisture beyond its specified operating conditions.
2. Firmware Updates
Regularly check for and install firmware updates through the Shelly Smart Control App or web interface. Firmware updates often include performance improvements, new features, and security enhancements.
Troubleshooting
1. Connectivity Issues
- No Wi-Fi/LAN connection: Verify your network settings, router functionality, and ensure the device is within Wi-Fi range or the Ethernet cable is securely connected.
- Device offline in app: Check internet connectivity, device power, and ensure the Shelly Smart Control App is updated.
2. Inaccurate Readings
- Incorrect energy data: Ensure Current Transformers (CTs) are installed correctly with proper polarity and are securely connected.
- No data: Check all electrical connections and ensure the device is powered on.
3. Device Not Responding
- Hard Reset: If the device becomes unresponsive, perform a hard reset by briefly disconnecting and reconnecting its power supply. Refer to the device's specific reset procedure if available.
Specifications
| Feature | Specification |
|---|---|
| Model Number | 3800235268117 |
| Connector Type | Clamp |
| Current Rating | 400 Amps |
| Mounting Type | DIN Rail Mount |
| Wattage | 92 KW |
| Product Dimensions | 2.72 x 0.75 x 3.7 inches |
| Item Weight | 2.19 ounces |
| Smart Home Compatibility | Smart Home Compatible |
| Specification Met | CE, RoHS |
| Upper Temperature Rating | 105 Degrees Fahrenheit |
Warranty
The Shelly Pro 3EM (400A) comes with a 5-year device warranty, ensuring long-term reliability and support for your product.
Support
For further assistance, technical support, or to explore more about Shelly products, please refer to the following resources:
- Knowledge Base: Access detailed product specifications and guidelines at support.shelly.cloud/en/support/home
- Technical Support: Contact Shelly's professional support team.
- Community Forums: Engage with other users and find solutions in Reddit communities and Facebook Support Groups.
- Shelly Academy: Explore video tutorials and webinars for in-depth learning.
Video: Smart home with Shelly. This video provides a general overview of how Shelly devices integrate into a smart home ecosystem, simplifying daily routines and enhancing living.
