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Eastron SDM72CT-M vs Eastron SDM72D-M

Install fit
Phase support 3P4W on current product page; V1.2 manual also documents 1P2W and 3P4W measurement. Single-phase two-wire (1P2W) and three-phase four-wire (3P4W); 100-277 V L-N or 100-480 V L-L, 50/60 Hz.
Installation Indoor 4-module 35 mm DIN-rail CT-operated panel installation; 72 x 100 x 66 mm, IP51 and CAT III. Professional wiring and correctly rated CTs are required. Indoor 72 mm / four-module DIN-rail direct connection; default top-in/bottom-out wiring.
Measurement CT-operated RMS electrical parameters plus bidirectional active/reactive import-export energy; pulse outputs and local RS485 Modbus RTU. True-RMS 1P2W/3P4W voltage, current, power and bidirectional import/export energy measurement.
Max current 9999 A 100 A
Meter fit
Accuracy class Active energy Class 1.0 / Class B; reactive energy Class 2. Active energy Class 1.0 / Class B; reactive energy Class 2; MID certified.
Current sensing External CT inputs with configurable 1-9999 A primary and 1 A or 5 A secondary. The 9999 A value is the CT-primary programming ceiling, not direct current through the meter. Direct-connected whole-current meter; no external CTs required.
Monitoring
Protocol RS485 Modbus RTU / pulse output RS485 Modbus RTU / pulse output
Local API Yes Yes
Cloud dependency No vendor cloud required; local RS485 Modbus RTU and pulse outputs are available through compatible hardware. No vendor cloud required; local readings are available through RS485 Modbus RTU and pulse outputs.
Home Assistant Yes Yes
Solar fit
Solar import/export Yes Yes
Buying context
Availability Global Eastron product and inquiry channels; exact CT package, certification, stock and distributor availability vary by market. Global Eastron product range; certification, stock, and suffix availability vary by market.
Source check
Last verified Aug 28, 2026 Aug 26, 2026
Product page Official page Official page
Documentation Official docs Official docs
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