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Carlo Gavazzi EM540DINAV23XS1X vs Carlo Gavazzi EM511DINAV81XS1PFB

Install fit
Phase support Two-phase three-wire and three-phase three-/four-wire systems; 120-240 V L-N and 208-415 V L-L, 50/60 Hz Single-phase two-wire 120-240 V L-N
Installation Indoor 3-module DIN-rail direct-connected installation by a qualified electrician; IP40 front and IP20 terminals inside a suitable panel. Indoor DIN-rail switchboard installation
Measurement Direct-connected multiphase TRMS electrical-variable and bidirectional active/reactive energy measurement with separate import/export totalizers. Direct-connected bidirectional energy and electrical-variable measurement
Max current 65 A 45 A
Meter fit
Accuracy class Class 1 active energy; Class 2 reactive energy; exact X SKU is non-MID Class 1 active / MID Class B; Class 2 reactive
Current sensing Direct connection 5(65) A; no external current transformer 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 vendor cloud is required; display, keypad configuration, UCS software, and RS-485 Modbus RTU provide local operation and data access. 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 Global Carlo Gavazzi product range with localized product and sales channels; exact SKU carries CE, cULus, and UKCA approvals, while stock and suitability vary by market. 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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