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Acrel ADL400 vs Carlo Gavazzi EM24

Install fit
Phase support Three-phase three-wire and three-phase four-wire systems. 1P2W, 3P3W, and 3P4W systems for the AV9 direct-connected model.
Installation DIN-rail mounted three-phase energy meter; direct and CT wiring variants are documented. Indoor 4-DIN DIN-rail mounted direct-connected energy analyzer for low-voltage switchboards.
Measurement Three-phase Modbus energy meter measuring electrical parameters, active/reactive energy, and forward/reverse energy. Direct-connected single/three-phase active and reactive energy analyzer with Modbus RTU and electrical-variable monitoring.
Max current 80 A 65 A
Meter fit
Accuracy class Active energy Class 0.5; reactive energy Class 2. Active energy Class 1 / Class B MID; 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 65 A; no external CTs for EM24DINAV93XISX.
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 for core metering; local RS485 Modbus RTU access through compatible hardware or software.
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. Carlo Gavazzi global product channels; country pages, certification, stock, and distributor availability vary by region.
Source check
Last verified Jul 21, 2026 Jun 27, 2026
Product page Official page Official page
Documentation Official docs Official docs
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