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Schneider Electric Acti9 iEM3155 vs Carlo Gavazzi EM511DINAV81XS1PFB

Install fit
Phase support 1P+N, 3P and 3P+N; 100-277 V L-N or 173-480 V L-L, 50/60 Hz Single-phase two-wire 120-240 V L-N
Installation Indoor DIN-rail direct-connected installation in a suitable electrical panel by a qualified electrician; 90 mm wide, IP40 front and IP20 body. Indoor DIN-rail switchboard installation
Measurement Direct-input current, voltage, active/reactive power, and signed four-quadrant active/reactive/apparent energy measurement. Direct-connected bidirectional energy and electrical-variable measurement
Max current 63 A 45 A
Meter fit
Accuracy class Class 1 active energy; Class B active energy; MID certified Class 1 active / MID Class B; Class 2 reactive
Current sensing Direct input 0-63 A; no external current transformers Direct connected 5(45) A; no external CT
Monitoring
Protocol RS-485 Modbus RTU RS-485 Modbus RTU
Local API Yes Yes
Cloud dependency No cloud required; display and RS-485 Modbus RTU data access operate locally. Remote access depends on the separately chosen gateway or platform. No vendor cloud is required for metering or configuration; data is available locally on the display and through RS-485 Modbus RTU.
Home Assistant Yes Yes
Solar fit
Solar import/export Yes Yes
Buying context
Availability Europe, North America and other Schneider Electric regional markets; certification, stock and ordering vary by country. Global Carlo Gavazzi product range with localized product and sales-network routes across Europe, the Americas and Asia-Pacific; approvals and availability vary by market.
Source check
Last verified Aug 14, 2026 Aug 12, 2026
Product page Official page Official page
Documentation Official docs Official docs
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