Shelly Pro 3EM-3CT63 fits buyers who want a more installer-grade meter than a basic Wi-Fi clamp sensor, but still care about local access, app visibility, and flexible integrations.
It makes the most sense when you need panel-mounted monitoring for a three-phase service, a higher-load EV charging circuit, or a solar-aware installation where import and export visibility matters. Shelly presents it as photovoltaic ready, with 4-quadrant measurement, local web access, and protocol options including Modbus TCP, MQTT, HTTP, WebSocket, and RPC.
What stands out:
- DIN-rail form factor for cleaner panel integration
- Bundled 63 A three-phase current transformer instead of separate loose CT choices
- Local-first operation over Ethernet or Wi-Fi with optional cloud use
- Home Assistant-friendly Shelly ecosystem fit
- Useful when you want one device to cover whole-home, EV, or solar-adjacent monitoring without jumping straight to a more industrial meter stack
Watch-outs:
- It does not include a built-in relay; Shelly notes that contactor control needs the Shelly Pro 3EM Switch Add-on
- The 63 A CT format is not the right fit for every main service, so higher-current panels may need a different meter family