Smart energy meter Shelly 3EM-63W Gen3
Description
Shelly 3EM-63W Gen3 is the colour-coded wire version of the Shelly 3EM-63 Gen3 energy meter, designed for monitoring a three-phase system or three independent single-phase circuits. It connects directly to the Wi-Fi network and needs no hub to work.
The device measures voltage, current, active and apparent power on each phase in real time, is ready for photovoltaic installations and provides 4-quadrant metering, with class B accuracy according to IEC 62053-21. The colour-coded wires make installation easier in electrical panels with limited space, where flat terminals would be harder to position.
Shelly 3EM-63W Gen3 stores up to 7 days of data locally at 1-minute intervals, has an internal real-time clock to keep the date correct even without internet, and allows data to be exported in CSV format or retrieved via the JSON API for integration with external systems.
In practice, Shelly 3EM-63W Gen3 is suitable for monitoring the consumption of a home or business with a three-phase installation, for tracking a photovoltaic system or for separately metering three single-phase circuits, and is often preferred in narrow electrical panels where the flexibility of wires matters more than fixed terminals.
Practical use cases
- Mounted on the main electrical panel, it gives a real-time picture of the total consumption of the home, helping to identify the appliances that use the most energy.
- Used to monitor a dedicated circuit (air conditioning, heat pump, electric car charger), it lets you track the monthly costs of each individual load.
- Useful in systems with their own energy production (photovoltaic panels), to compare the energy produced with the energy consumed and optimise the use of large appliances during peak production hours.
- Sends alerts in the app in case of abnormal consumption, helping to quickly detect faulty equipment.
Technical specifications
| Dimensions | 21 x 54 x 42 mm (without wires) |
| Weight | 58 g (with wires) |
| Power supply | 220-240V AC, 50/60Hz |
| Self-consumption | < 2 W |
| Measured current | 0-63 A per phase (saturation 130 A) |
| Current accuracy | ±1% (2-63A), ±2% (1-2A), ±5% (0-1A) |
| Voltage accuracy | better than ±1% |
| Connectivity | Wi-Fi 802.11 b/g/n, Bluetooth 4.2 |
| Data storage | minimum 7 days, 1-minute resolution |
| Accuracy class | B (IEC 62053-21) |
| Operating temperature | -20°C la +40°C |
| Memory | 8 MB |
| Warranty | 3 years |
Shelly 3EM-63W Gen3 is the right choice when the installation requires flexible wires instead of flat terminals, offering the same accuracy and the same three-phase monitoring functions as the entire Shelly 3EM-63 Gen3 family.