Shelly
Pro 3EM-400
DIN-rail three-phase energy meter with included 400A current transformers, measuring per-phase voltage, current, power, and bidirectional energy with 1% accuracy. Wired Ethernet plus Wi-Fi keeps panel-level monitoring rock solid for whole-building loads.
Setup guides
Roles it can fill
Native Shelly integration, local, no cloud required (also MQTT, plus simultaneous Ethernet and Wi-Fi). Three-phase + neutral metering with 400A solid-core CTs included, DIN-rail mount, no built-in display, Matter-ready firmware; no onboard relay (use a Shelly Pro Add-on for contactor control).