Device Overview
Eastron SDM72D-M is a DIN-rail three-phase multifunction energy meter designed for EV charging metering, sub-metering, and installer-led electrical-panel monitoring. It is best treated as an energy-meter record: it measures electrical parameters and exposes metering data locally, but it is not an inverter, battery, EV charger, or gateway-only device.
Core Features
The official Eastron product page positions SDM72D-M as a MID three-phase multifunction EV/energy meter for 22 kW or below AC EV charging piles. It measures and displays voltage, current, frequency, power factor, active power, reactive power, active energy, and reactive energy. It also supports resettable partial energy, which can help installers or operators track charging-session or sub-metered consumption over a selected period.
Installation And Measurement
SDM72D-M is a 3P4W three-phase DIN-rail meter with direct connection up to 100 A. That direct-connected format matters because it avoids separate external CT selection for installations within the meter's current limit. For larger services, buyers should compare CT-based meters instead.
Communication And Integration
The meter provides RS485 Modbus RTU and pulse outputs. That makes it suitable for local data collection through compatible gateways, EV charging controllers, energy-management systems, or a Home Assistant Modbus setup. Home Assistant support should be read as standards-based Modbus integration through suitable RS485 hardware, not as an Eastron-native cloud integration.
Fit And Limits
This model is strongest where a compact, direct-connected three-phase meter is needed for EV charger metering, import/export tracking, or panel-level sub-metering. It is less suitable for DIY app-first monitoring or services above 100 A, and regional certification or exact model suffix availability should be checked before purchase.