Shelly Pro 3EM-400 | 3-Phase Energy Meter

For the Real Heavy User: The Shelly Pro 3EM-400A Energy Meter

If standard measurements aren't enough, there's the Shelly Pro 3EM-400A . This is the most powerful, professional 3-phase energy meter from the Shelly family, specifically designed for industrial applications, businesses, or homes with very heavy grid connections. With the included current transformers, you can accurately measure currents up to 400 amps per phase .

This meter is built for precision and reliability. Thanks to its 4-quadrant measurement, it monitors not only your consumption but also the energy fed back from your solar panels (bidirectional) with an accuracy of 1% (Class B) . You get real-time insight into voltage, current, active and apparent power, and the power factor. All data is stored locally for up to 60 days , even if your internet connection is lost.

The "Pro" in the name stands for professional features. Besides Wi-Fi , this meter features a stable LAN (Ethernet) connection and Bluetooth for lightning-fast installation. The powerful ESP32 chip enables advanced scripting , webhooks , and MODBUS integration, ideal for complex and industrial systems. Want switching capabilities as well? Easily expand it with the Shelly Pro 3EM Switch Add-on .

Benefits and points of interest:

• Measures up to 400A: Perfect for the toughest industrial and residential connections.
• 3x 400A current clamps included: You can get started right away with a complete set.
• Dual connectivity: Ultra-reliable connection via both LAN and WiFi .
• Highly accurate: Class B accuracy (1%) and 4-quadrant measurement for consumption and feed-in.
• Professional features: Supports MODBUS , scripting , and webhooks for ultimate control.
• Local data storage: Stores 60 days of measurements per minute on the device itself.
  
  NB:
• No built-in switch: Switch functionality requires the separately available Switch Add-on .
• Advanced product: Installation requires knowledge of electrical systems.

Compatibility with Smart Home Systems

• Home Assistant: A dream combination. The Shelly Pro 3EM-400A is recognized locally and instantly via the LAN connection thanks to the official Home Assistant integration. All sensors are immediately available for your dashboards and automations.
• Homey: Works great. The official Shelly app for Homey supports the Pro series, allowing you to use the measurement data in your Homey Flows for advanced scenarios.
• Fibaro: Integration is possible but requires technical expertise. The connection must be configured manually via a Virtual Device that communicates with the Shelly Pro 3EM API.

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