Shelly 3EM-63T - 3 Phases Power Measurement

Shelly 3EM-63 Gen3T - Compact, versatile and ready to install anywhere

Shelly The 3EM-63T Gen3 is a small flat-terminal energy meter designed to monitor a three-phase system or three separate single-phase circuits. It easily integrates into smart homes or professional installations and delivers reliable, instant data to improve energy efficiency.

3EM-63 Gen3T - Multiple connection types

This device provides precise four-quadrant measurement for detailed energy consumption monitoring in both three-phase and single-phase circuits. Thanks to its customizable configuration, you can use it independently via Wi-Fi or connect it to popular automation systems. Its compact design simplifies installation. In addition, it is ready for future technologies - it allows monitoring of photovoltaic systems, thus tracking both solar production and consumption from the grid.

• Version with flat terminals
• Control via Wi-Fi, Bluetooth support
• Connect the device to a Wi-Fi network without the need for a HUB!
• Flexible installation
• Easy mounting on a DIN rail.
• Measurement of energy consumption
• Monitoring of voltage, current, power factor, active and apparent power and energy.
• Four quadrant measurement
• Various connection types: three-phase or single-phase installations
• Contactless current measurement via current transformers
• Phase sequence error detection (optional)
• No-load threshold
• Optical indication of energy consumption
• Real-time: data retains correct time stamps even in the event of an internet outage.
• Data logging: up to 7 days of data retention on the device
• Class B accuracy (IEC 62053-21)
• Photovoltaic support

Technical parameters

• Dimensions (HxWxD): 21x54x42 mm (Shelly 3EM-63W Gen3, without cables), 31x54x42 mm (Shelly 3EM-63T Gen3, without cable)
• Cable length: 260 mm (including flat terminal)
• Weight: 58 g (Shelly 3EM-63W Gen3, including cables), 52 g (Shelly 3EM-63T Gen3, including cable)
• Conductor diameter: max. Ø 8 mm
• Mounting: Above or below circuit breakers on DIN rail
• Case material and color: Plastic, white
• Operating temperature: -20 °C to 40 °C
• Humidity: 30% to 70% RH
• Maximum altitude: 2000 m
• Power supply: 220-240 V~ 50/60 Hz (between LA and N)
• Power consumption: < 2 W
• External protection: 63 A, characteristic B or C, breaking capacity 6 kA
• Internal temperature sensor: Yes
• Voltmeter (RMS for each phase): 220-240 V~ 50/60 Hz
• Voltmeter accuracy: better than ±1%
• Ammeter (RMS via integrated CT for each phase): 0 - 63 A (130 A saturation)
• Ammeter accuracy: ±1% (2 - 63 A), ±2% (1 - 2 A), ±5% (0 - 1 A)
• Power and energy measurement: Active and apparent power, power factor, fundamental active and reactive energy
• No-load threshold: 30 VA
• Measurement data storage: Minimum 7 days with 1 minute resolution
• Data export: CSV for PQ values, JSON export via RPC
• Radio: Wi-Fi
• Protocol: 802.11 b/g/n
• Bluetooth Protocol: 4.2
• Signal range: Up to 30 m indoors, 50 m outdoors
• Microcontroller: ESP-Shelly-C38F
• Flash: 8 MB
• MQTT support: Yes