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OpenEnergyMonitor emonTx6 vs ABB B23 112-100

Install fit
Phase support Single-phase and 3-phase 4-wire AC monitoring. Three-phase 3- or 4-wire systems; ABB B23 112-100 is specified for 3x220-240 V / 3x380-415 V contexts.
Installation Wall-mounted wireless CT monitoring node used with emonVs voltage sensor and clip-on CT sensors. DIN-rail mounted direct-connected electricity meter; 4 DIN modules with hard-wired three-phase installation by a qualified installer.
Measurement CT-based six-channel AC electricity monitoring expander for OpenEnergyMonitor systems. Three-phase direct-connected active-energy meter for sub-metering, building energy monitoring, and Modbus/pulse data collection.
Max current 200 A 65 A
Meter fit
Accuracy class Unknown Active energy Class 1.0 / Class B MID
Current sensing 6 CT inputs for 333 mV voltage-output CT sensors; official shop options include 20 A, 50 A, 100 A, and 200 A CTs. Whole-current direct connection up to 65 A; no external CTs for the B23 112-100 direct-connected model.
Monitoring
Protocol Unknown Modbus RTU
Local API Yes Yes
Cloud dependency No vendor cloud is required when readings are logged through local emonPi3 / emonBase / EmonCMS paths; remote EmonCMS.org posting is optional. No vendor cloud is required; data is local over RS-485 Modbus RTU or pulse output.
Home Assistant Yes Yes
Solar fit
Solar import/export Yes No
Buying context
Price range Unknown About $150-$300
Availability United Kingdom via OpenEnergyMonitor official shop; international availability depends on shop shipping, taxes, stock, and local electrical suitability. ABB global / IEC distributor markets for B23 112-100; use ABB's B23 112-500 UL variant for the current U.S. B23 lane.
Source check
Last verified Jun 16, 2026 Jun 15, 2026
Product page Official page Official page
Documentation Official docs Official docs
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