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IAMMETER WEM3046T vs ABB A41 312-100

Install fit
Phase support Three-phase 4-wire WYE/Star; also used by IAMMETER for single-phase-as-3-meters and split-phase scenarios. Single-phase 57.7-288 V AC line-to-neutral
Installation 2-pole DIN-rail meter with external xxx:5A CT wiring. Indoor 4-module DIN-rail direct-connected installation by a qualified electrician.
Measurement Three-phase 5 A CT-input Wi-Fi energy meter with bidirectional active energy and electrical-parameter monitoring. Single-phase direct-connected four-quadrant active/reactive energy and electrical-parameter metering.
Max current Unknown 80 A
Meter fit
Accuracy class Class 1 active energy; +/-1.0% V/I/active power. MID Class B / IEC Class 1 active energy; Class 2 reactive energy
Current sensing Three external CT channels; no CTs are bundled. Each input accepts a third-party CT with a 5 A secondary output and a user-selected xxx:5A primary ratio. Direct-connected measurement up to 80 A; no external CT required
Monitoring
Protocol Wi-Fi / HTTP / MQTT / Modbus TCP / RS485 Modbus RTU / Local API Unknown
Local API Yes Yes
Cloud dependency Optional IAMMETER Cloud; local HTTP, MQTT, Modbus TCP/RTU and third-party server modes are supported. No cloud required; display and RS-485 Modbus RTU / EQ Bus provide local access.
Home Assistant Yes Yes
Solar fit
Solar import/export Yes Yes
Buying context
Availability Global IAMMETER online store availability; local warehouse and reseller stock vary by region. Global ABB channels; Netherlands official listing verified; stock and certification vary by market.
Source check
Last verified Aug 31, 2026 Aug 13, 2026
Product page Official page Official page
Documentation Official docs Official docs
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