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Acrel ADL200 vs Acrel ADL400

Install fit
Phase support Single-phase low-voltage AC; official sources specify AC 220 V, 50 Hz. Three-phase three-wire and three-phase four-wire systems.
Installation Indoor 2-module (36 mm) DIN35-rail, direct-connected single-phase installation by qualified personnel; 90 x 36 x 65 mm. DIN-rail mounted three-phase energy meter; direct and CT wiring variants are documented.
Measurement Single-phase direct-connected measurement of positive/negative active energy and U, I, P, Q, S, PF, frequency and harmonics. Three-phase Modbus energy meter measuring electrical parameters, active/reactive energy, and forward/reverse energy.
Max current 80 A 80 A
Meter fit
Accuracy class Class 1 active energy. Active energy Class 0.5; reactive energy Class 2.
Current sensing Direct input, 10 A basic current and 80 A maximum current; no external CTs for this ADL200 direct-connected meter. 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. Display, pulse output and metering work locally; the documented RS485 configuration provides local Modbus RTU access. 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 Acrel quote/distributor market; availability, certification acceptance, MID configuration and ordering vary by country. Global Acrel product range with direct quote/contact routes; local distributor availability and certification context vary by market.
Source check
Last verified Sep 4, 2026 Jul 21, 2026
Product page Official page Official page
Documentation Official docs Official docs
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