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Acrel ADL400 vs Eastron SDM54-DM

Install fit
Phase support Three-phase three-wire and three-phase four-wire systems. 1P2W and 3P4W supplies.
Installation DIN-rail mounted three-phase energy meter; direct and CT wiring variants are documented. DIN-rail mounted direct-connected meter.
Measurement Three-phase Modbus energy meter measuring electrical parameters, active/reactive energy, and forward/reverse energy. Direct single/three-phase Modbus import/export energy meter.
Max current 80 A 45 A
Meter fit
Accuracy class Active energy Class 0.5; reactive energy Class 2. Active energy Class 1.0 / Class B; reactive energy Class 2.
Current sensing Acrel documents 3 x 1(6) A and 3 x 10(80) A input-current variants, with direct-connect and CT wiring examples. Direct connection up to 45 A; no external CTs.
Monitoring
Protocol RS485 Modbus RTU RS485 Modbus RTU
Local API Yes Yes
Cloud dependency No vendor cloud required for core metering; ADL400 exposes local RS485 Modbus RTU for SCADA, EMS, gateways, or automation systems. No vendor cloud required; readings are available locally over RS485 Modbus RTU.
Home Assistant Yes Yes
Solar fit
Solar import/export Yes Yes
Buying context
Availability Global Acrel product range with direct quote/contact routes; local distributor availability and certification context vary by market. Global Eastron product range; regional distributor availability varies.
Source check
Last verified Jul 21, 2026 Jul 19, 2026
Product page Official page Official page
Documentation Official docs Official docs