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Acrel ADW300 vs ABB A43 312-100

Energy Meter

Acrel ADW300

Energy Meter

ABB A43 312-100

ABB A43 312-100 / 2CMA170525R1000

Decision point	Acrel ADW300	ABB A43 312-100

Install fit
Phase support	Three-phase three-wire and three-phase four-wire wiring modes.	Three-phase three-wire and four-wire systems (2- and 3-element metering)
Installation	Indoor DIN-rail / distribution-box three-phase meter with external CT input and auxiliary AC/DC 85-265 V supply.	Indoor 7-module DIN-rail direct-connected installation; professional three- or four-wire panel wiring required.
Measurement	Three-phase CT-input wireless smart energy meter for active/reactive energy, electrical parameters, demand, harmonics, and power monitoring.	Three-phase direct-connected four-quadrant meter for active/reactive/apparent energy, import/export, electrical parameters, and multi-tariff sub-metering.
Max current	Unknown	80 A
Meter fit
Accuracy class	Class 0.5S active energy for ADW300; Class 1 for ADW300W variant.	MID Class B / IEC Class 1 active energy; Class 2 reactive energy
Current sensing	External CT input; ADW300 manual lists 3 x 1(6) A CT-input context and optional 333 mV / Rogowski access variants.	Direct-connected 80 A measurement; no external CT required
Monitoring
Protocol	RS485 Modbus RTU; optional Wi-Fi, 4G, NB-IoT, LoRa / LoRaWAN variants	RS-485 Modbus RTU / EQ Bus / infrared interface / configurable pulse-alarm I/O
Local API	Yes	Yes
Cloud dependency	No cloud required for RS485 Modbus RTU metering; Acrel IoT/cloud use is optional on wireless variants.	No vendor cloud is required; readings and configuration are available locally over RS-485 Modbus RTU / EQ Bus and the meter display.
Home Assistant	Yes	Yes
Solar fit
Solar import/export	Yes	Yes
Buying context
Availability	Global Acrel product range; local wireless-option availability and certification context vary.	Global ABB product range; official localized product and distributor routes cover Europe, the Americas, Middle East/Africa, and Asia-Pacific, with stock and certification varying by market.
Source check
Last verified	Jul 24, 2026	Aug 12, 2026
Product page	Official page	Official page
Documentation	Official docs	Official docs