Device Overview
Acrel ADW300 is a three-phase wireless smart energy meter for low-voltage distribution systems. It fits sub-metering, power monitoring, operations checks, and installations where a distribution cabinet needs CT-input metering plus optional wireless communication.
Core Features
The official Acrel sources describe ADW300 as measuring voltage, current, active power, reactive power, apparent power, power factor, frequency, demand, 2nd to 31st harmonics, active energy, and reactive energy. The manual also documents positive and reverse active-energy metering, which is important for solar, bidirectional-flow, or export-aware monitoring points.
Installation And Measurement
ADW300 is designed for distribution-box installation with external CT current input. The reviewed sources list three-phase three-wire and three-phase four-wire wiring modes, auxiliary AC/DC 85-265 V power, and a 93 x 72 x 88 mm device body. The standard ADW300 current input is documented as 3 x 1(6) A, so the page does not treat that secondary-input value as one fixed maximum measured-circuit current.
Communication And Integration
For local systems, the RS485 /C option exposes Modbus RTU. Acrel also lists optional Wi-Fi, 4G, NB-IoT, LoRa, and LoRaWAN communication variants. Home Assistant support should be understood as standards-based Modbus polling through compatible RS485 hardware, not as an Acrel-native Home Assistant integration.
Selection Notes
Choose ADW300 when a project needs three-phase CT-input metering with richer electrical-parameter visibility than a simple kWh meter. Confirm the exact communication suffix, CT ratio, local certification needs, and cloud/wireless requirements before purchase, because ADW300 is a configurable product family rather than a single fixed kit.