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Shelly
Shelly

Pro 3EM-3CT63

A three-phase DIN-rail energy meter that measures active and apparent power, energy, and power factor across three phases plus neutral using 63A CT clamps. Wired Ethernet and Wi-Fi deliver reliable real-time monitoring for panel-level installations.

Native Shelly integration, local, no cloud required, with optional MQTT. Three-phase DIN-rail meter with 63A split-core CT clamps (3 phase + 1 neutral), per-phase real-time voltage/current/power, 60+ days of 1-minute data storage, wired Ethernet and Wi-Fi; LED indication and embedded web interface, no display.
Works on integrations
Shelly MQTT
Roles it can fill
Energy Monitor

Recipes using this device

Energy · v1.0.0

High Energy Usage Alert

Installs a Home Assistant automation that watches your whole-home power draw and warns you when it stays high for longer than it should, so a heater or a forgotten appliance does not run all day unnoticed. Add speakers to hear it, add a smart plug to shed the load.

Recipes that can use it

These recipes are built around other hardware, and pick this device up as an optional extra.

Energy · v1.0.0

Solar Surplus EV Charging

Installs a Home Assistant automation that starts your EV charger when your solar array is producing a surplus and stops it when production drops, so the car pulls from the roof rather than the grid. Add a grid meter and a home battery and it holds back until they are happy too.

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