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IAMMETER WEM3046T vs ABB B23 112-100

Install fit
Phase support Three-phase 4-wire WYE/Star; also used by IAMMETER for single-phase-as-3-meters and split-phase scenarios. Three-phase 3-wire and 4-wire systems; nominal 3 x 230/400 V AC.
Installation 2-pole DIN-rail meter with external xxx:5A CT wiring. Indoor 4-DIN DIN-rail direct-connected three-phase energy meter for distribution boards and small enclosures.
Measurement Three-phase 5 A CT-input Wi-Fi energy meter with bidirectional active energy and electrical-parameter monitoring. Direct-connected three-phase active-energy meter with RS485 Modbus RTU / EQ Bus and pulse or alarm output.
Max current Unknown 65 A
Meter fit
Accuracy class Class 1 active energy; +/-1.0% V/I/active power. Active energy Class B / Class 1.
Current sensing No bundled primary CTs; connects to third-party external CTs with 5 A secondary output, such as 600:5A, 800:5A, 1000:5A or larger ratios. Direct-connected three-phase meter; B23 direct connection up to 65 A, no external CTs for B23 112-100.
Monitoring
Protocol Wi-Fi / HTTP / MQTT / Modbus TCP / RS485 Modbus RTU / Local API Modbus RTU
Local API Yes Yes
Cloud dependency IAMMETER Cloud/app is available, but local LAN HTTP GET, Modbus TCP/RTU, MQTT, and user-specified server upload paths are documented. No ABB cloud required for core metering; B23 112-100 exposes local RS485 Modbus RTU / EQ Bus data when connected to compatible equipment.
Home Assistant Yes Yes
Solar fit
Solar import/export Yes No
Buying context
Price range Unknown About $150-$300
Availability Global IAMMETER channels with China, USA, Australia, and Germany warehouse/platform lanes listed for WEM3046T; regional stock and CT selection vary by seller. ABB global product and distributor channels; MID/IEC availability and local stock vary by country.
Source check
Last verified Jun 15, 2026 Jun 30, 2026
Product page Official page Official page
Documentation Official docs Official docs
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