Device overview
The Eastron SDM630MCT-ML-TCP is a multi-circuit DIN-rail energy meter for installations where one meter needs to monitor several circuits instead of a single service feed. It is a better fit for panel-level, data-center, commercial, and advanced home-energy monitoring projects than simple plug-in or one-load meters.
Core capabilities
Eastron's official product page and datasheet describe the SDM630MCT-ML-TCP as a multi-function meter with Ethernet Modbus TCP. It can be used as four three-phase energy meters or twelve single-phase energy meters in one enclosure, depending on wiring and model configuration.
The meter measures voltage, current, power, power factor, frequency, demand, energy, and harmonic-related parameters. The official datasheet lists Class B / Class 1 active-energy accuracy and 0.5% voltage/current accuracy.
Installation and measurement path
This is an installer-installed DIN-rail device. It uses external 100 mA CT inputs, with 100 mV listed as an option in the datasheet, and programmable CT primary settings from 1 A to 9999 A. That makes the selected CT package and configuration important: the meter is not a direct-connected 65 A or 100 A whole-current device.
Compatibility and local data
The SDM630MCT-ML-TCP exposes Ethernet Modbus TCP for local reading and programming. It does not require a vendor cloud for the core metering path. Home Assistant can work with Modbus TCP devices through its generic Modbus integration when register mapping and network access are configured correctly.
Best-fit scenarios
This meter is strongest for multi-circuit measurement, data-center metering, distribution boards, sub-metering, and advanced energy-monitoring projects where local Ethernet polling is preferred. It is more complex than consumer CT monitors, so it suits installer-led projects and technically confident users.
Limits to note
The page should be treated strictly as an energy-meter record. It is not a solar inverter, battery-storage product, EV charger, or standalone gateway/data-logger. Current limits depend on the external CT selection and CT-primary programming, so buyers should match CTs and wiring to the actual installation rather than reading the 9999 A programming boundary as a typical residential rating.