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Eastron SDM54-DM vs Acrel ADL400

Install fit
Phase support 1P2W and 3P4W supplies. Three-phase three-wire and three-phase four-wire systems.
Installation Indoor DIN-rail direct-connected installation by a qualified electrician; IP51 front protection. DIN-rail mounted three-phase energy meter; direct and CT wiring variants are documented.
Measurement Direct-connected RMS parameter and bidirectional active/reactive import-export energy measurement for 1P2W and 3P4W AC supplies. Three-phase Modbus energy meter measuring electrical parameters, active/reactive energy, and forward/reverse energy.
Max current 45 A 80 A
Meter fit
Accuracy class Active energy Class 1.0 / Class B (EN 50470-3:2022); reactive energy Class 2. Active energy Class 0.5; reactive energy Class 2.
Current sensing Direct connection up to 45 A; no external CTs. Acrel documents 3 x 1(6) A and 3 x 10(80) A input-current variants, with direct-connect and CT wiring examples.
Monitoring
Protocol RS485 Modbus RTU RS485 Modbus RTU
Local API Yes Yes
Cloud dependency No vendor cloud required; readings are available locally over RS485 Modbus RTU. No vendor cloud required for core metering; ADL400 exposes local RS485 Modbus RTU for SCADA, EMS, gateways, or automation systems.
Home Assistant Yes Yes
Solar fit
Solar import/export Yes Yes
Buying context
Availability Global Eastron product range; regional distributor availability varies. Global Acrel product range with direct quote/contact routes; local distributor availability and certification context vary by market.
Source check
Last verified Sep 3, 2026 Jul 21, 2026
Product page Official page Official page
Documentation Official docs Official docs
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