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Acrel ADL200 vs Carlo Gavazzi EM540

Install fit
Phase support Single-phase low-voltage AC system. 2-phase 3-wire; 3-phase 3-wire; 3-phase 4-wire; 4-wire delta / wild-leg.
Installation DIN35 rail mounted direct-connected single-phase energy meter. Indoor 3-DIN DIN-rail direct-connected energy analyzer for low-voltage switchboards.
Measurement Single-phase direct-connected Modbus energy meter measuring active energy and electrical parameters. Direct-connected two/three-phase energy analyzer for import/export active energy and electrical variables over Modbus RTU.
Max current 80 A 65 A
Meter fit
Accuracy class Class 1 measuring accuracy. Active energy Class 1; Class B MID.
Current sensing Direct connection, 10 A basic current and 80 A maximum current; no external CTs for this ADL200 direct-connect meter. Direct connection up to 65 A; no external CTs for the EM540DINAV23XS1X direct-connected model.
Monitoring
Protocol RS485 Modbus RTU RS485 Modbus RTU
Local API Yes Yes
Cloud dependency No vendor cloud required for core metering; ADL200 exposes local RS485 Modbus RTU and pulse output for gateways, EMS, SCADA, PLCs, or automation systems. No vendor cloud required for core use; EM540DINAV23XS1X exposes local RS485 Modbus RTU data.
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; stock, approvals, and distributor availability vary by country.
Source check
Last verified Jul 21, 2026 Jun 25, 2026
Product page Official page Official page
Documentation Official docs Official docs
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