Carlo Gavazzi EM540
Official manufacturer global verified Sept. 2, 2026
Identity
| category | smart_meters |
| manufacturer | Carlo Gavazzi |
| model | EM540 |
| oem_ordering_code | EM540DINAV23XS1X |
| product_family | Carlo Gavazzi EM540 (Victron-distributed) |
| product_status | active |
| region | global |
| sku | REL200100100 |
Electrical
| accuracy_active_power | ± 1% rdg (1.0-65.0 A, PF 0.5-1-0.8) |
| accuracy_class_active_energy | Class 1 EN IEC 62053-21; Class B EN 50470-3 (MID) |
| accuracy_class_reactive_energy | Class 2 (EN IEC 62053-23) |
| accuracy_reactive_power | ± 2% rdg to ± 2.5% rdg |
| base_current | 5 A |
| ct_ratio_options | Not applicable - direct connection |
| current_connection | Direct connection (no CT required) |
| display | Yes - the EM540 has a display (contrast with the ET meters, which have none) |
| energy_totalisation | In the EM540, the energy imported and exported is counted as a total power, with net differential readings from each phase cancelling each other out. |
| frequency | From 45 to 65 Hz (non-MID); 50 Hz (MID) |
| max_current | 65 A |
| max_current_victron_spec | max. 65A/phase |
| measuring_category | UNKNOWN |
| minimum_current | 0.25 A |
| phases | Two-phase (3-wire), Three-phase with neutral (4-wire), Three-phase without neutral (3-wire), Wild leg system |
| power_consumption | < 1.3 W / 2.6 VA |
| rated_voltage_l_l | 208 to 415 V (non-MID) |
| rated_voltage_l_n | 120 to 240 V (non-MID) |
| refresh_rate | <= 100 ms (Modbus RTU refresh time); Victron selection guide states 100 ms |
Physical / mechanical
| dimensions_mm | UNKNOWN (width 90 mm) |
| din_modules | 3-DIN modules |
| material | UNKNOWN |
| terminals_measuring_inputs | 2.5 to 16 mm2 |
| terminals_neutral | 0.06 to 2.5 mm2 |
| weight | 370 g / 0.82 lb (packaging included) |
Installation
| mounting | DIN rail |
| phase_configuration | Select either Role or Phase type and press the space bar to make changes |
| plug_and_play | The EM540 is plug and play and its RS485 settings are already configured to the correct parameters for connection to a GX device via the RS485 to USB interface. |
| rs485_wiring | Orange = Data + to terminal 8; Yellow = Data - to terminal 9; Black = GND to terminal 10 |
Environment
| operating_temperature | From -25 to +55 °C (standard); -25 to +70 °C (PFx70 models) |
| relative_humidity | R.H. < 90 % non-condensing @ 40 °C |
| storage_temperature | -25 to +70 °C |
Interfaces & connectors
| bluetooth | No |
| ethernet | No |
| modbus_rtu | Yes - baud 9.6/19.2/38.4/57.6/115.2 kbps; addresses from 1 to 247; refresh time <= 100 ms |
| modbus_tcp | No |
| rs485 | Yes |
| ve_direct | No |
| zigbee | Optional via Victron Zigbee to USB / Zigbee to RS485 converters |
Protection
| ip_rating | Front: IP40; Terminals: IP20 |
Certifications
| standards | ['EN IEC 61010-1', 'EN IEC 62053-21', 'EN IEC 61557-12', 'MID certified (select models)', 'cULus approved (UL 61010)'] |
Warranty & service
| summary | UNKNOWN |
Documents
manual-html
Victron Energy Meter EM540 manual - FAQ
manual-pdf
Energy Meter Manual EM540 (shared, 113406)
oem-datasheet
Carlo Gavazzi EM540 Datasheet (EM540 DS ENG, 01/04/2025)
pricelist
Pricelist Victron 2026 Q1 USD C
product-page
Energy Meters product page
selection-guide
Victron Energy Meter Selection Guide
Recorded conflicts
electrical.current_connection Review required
Direct connection, no CT required (Carlo Gavazzi EM540 datasheet: EM540DINAV23XS1X is the AV2 direct-connect 65 A variant) — https://www.gavazziautomation.com/fileadmin/images/PIM/DATASHEET/ENG/EM540_DS_ENG.pdf
"CTs" as the measurement type for EM540 — https://www.victronenergy.com/upload/documents/Datasheet-Energy-Meters-Selection-Guide-EN.pdf
Additional documented parameters
Recorded verbatim from the source; no schema field exists for these yet.
| MID certification | Class B EN 50470-3 (MID) on MID variants |
| Neutral terminal wire size | 0.06 to 2.5 mm2 |
| PFx70 variant | operating temperature upgraded to -25 to +70 °C |
| Wild leg system | supported managed system type |
| cULus approved | UL 61010 |
| documented_relationship:inverter_meter | {"to_manufacturer": "Victron Energy", "to_model": "ESS (MultiPlus / Quattro inverter/charger system)", "relationship_type": "inverter_meter", "source": "Victron Energy Meter manual, Features / FAQ Q10", "source_url": "https://www.victronenergy.com/media/pg/Energy_Meter_EM540/en/faq.html", "confidence": "officially-verified", "notes": "Role: grid meter and control input for an ESS System. FAQ Q10: \"Energy Meters are intended to supplement a Victron Inverter/Charger in the system.\""} |