Next Generation 3-Phase Power Meter The Shelly Pro 3EM is a WiFi powered, DIN mountable 3-phase power meter with WiFi, Bluetooth and LAN connectivity. With its 1% active energy measurement accuracy, the Shelly Pro 3EM can be used to individually monitor the consumption of all household appliances, circuits and office equipment. Historical data is stored for up to 60 days, with each phase having a one-minute resolution. In addition, the scripting functionalities allow the execution of complex scenarios and offer expanded monitoring options. WHY SHELLY PRO 3EM? Next Generation 3-Phase Power Meter The Shelly Pro 3EM is a WiFi powered, DIN mountable 3-phase power meter with WiFi, Bluetooth and LAN connectivity. With its 1% active energy measurement accuracy, the Shelly Pro 3EM can be used to individually monitor the consumption of all household appliances, circuits and office equipment. Historical data is stored for up to 60 days, with each phase having a one-minute resolution. In addition, the scripting functionalities allow the execution of complex scenarios and offer extended monitoring options. Functions 4-quadrant measurement
For measuring the capacitive and inductive load types of the imported and exported active energy.
Accuracy class B (active energy)
The Shelly Pro 3EM has a measurement accuracy of 1%.
MODBUS support
allows for quick and easy use in existing industrial plants.
WLAN, LAN and Bluetooth connectivity
Simultaneous Ethernet and WLAN use. MQTT, inbound and outbound WebSocket, UDP, mTLS support.
Power grid monitoring
Simultaneous monitoring of single-phase electrical systems with up to 3 sockets. Fast notifications and at least 60 days of data storage in one-minute increments.
Scripting functionalities
Shelly Pro 3PM fully supports mjS scripting, allowing you to create additional features and functionality.Commercial-grade security Shelly Pro 3EM supports mTLS for MQTT, HTTP and secure outbound WebSockets. Commercial-grade security enables direct connections to your cloud infrastructure and reduces the cost of deploying complex networks and VPNs. Endless applications Industrial facilities Shelly Pro 3EM provides support for MODBUS for voltage, current, power and energies. Your energy consumption and instantaneous values of voltage, current and power can be recorded precisely. Our new firmware platform enables a custom implementation that can report to your infrastructure every 100 ms. Two-way energy consumption monitoring Monitor your home, office or factory to prevent unnecessary expenses or brownouts that can damage your home and office devices. Shelly Pro 3EM can calculate two-way consumption: energy produced as well as consumed for each of the three phases. The device can also be configured to measure three separate circuits of a single-phase electrical system. Display of the quality of your power network in terms of active power, reactive power, voltage and power factor.Local control Thanks to the scripting functionalities of the Shelly Pro 3EM and the webhooks, you can easily control other Shelly or WLAN devices in your local network. Use these features to set precise parameters for heating, cooling or EV charging based on your PV production and automatically isolate your devices from power consumption. All of this works without having to use a cloud.Solar panel monitoring and control Watch how much energy your solar panels or wind turbines produce - save effortlessly. Shelly Pro 3EM provides real-time information on the efficiency of your solar and wind energy system as well as historical data on energy generation and consumption over the last 60 days - in one-minute increments. This allows you to control the flow of energy and use your solar panels and wind turbines most efficiently. In a further step, you can link Shelly Pro 3EM to your other Shelly devices and create scenarios to trigger desired actions such as turning off household appliances or triggering an alarm.Specifications Physical Current Transformer: 3 x CT120 included in the package Size (HxWxD ): 94x19x69 ±0.5 mm / 3.70x0.75x2.71 ±0.02 in Weight: 62 ±1 g / 2.19 ±0.05 oz Mounting: DIN rail Screw terminals max torque: 0.4 Nm / 4.43 lbin Conductor cross section: 0.5 to 2.5 mm² / 20 to 14 AWG (solid, stranded and bootlace lugs) Conductor stripped length: 6 to 7 mm / 0.24 to 0.28 in Shell material: Plastic Color: White Environmental Ambient temperature:-20 °C to 40 °C / -5 °F to 105 °F Humidity: 30 % to 70 % RH Max. altitude: 2000 m / 6562 ft Electrical Power supply voltage AC: 110 - 240 V, 50/60 Hz Power supply voltage DC: N/A Power consumption: < 3 W Sensors, meters Temperature sensor: Yes Voltmeters (RMS for each phase): 100 - 260 V Voltmeters accuracy: ±1 % Ammeters (RMS via CT for each phase and the Neutral) : 0 - 120 A Ammeters accuracy: ±1% (2 - 120 A), ±2% (1 - 2 A), ±5% (0 - 1 A) Power and energy meters: Active and apparent power Active and apparent energy Power factor Fundamental active and fundamental reactive energy Measurement data storage: At least 60 days of 1 min data resolution Data export: CSV for PQ recorded values, JSON format export through RPC Radio RF band: 2401 - 2495 MHz Max. RF power: < dBm Wi-Fi protocol: 802.11 b/g/n Wi-Fi Range: Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors (Depends on local conditions) Bluetooth Protocol: 4.2 Bluetooth Range: Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors (Depends on local conditions)" MCU CPU: ESP32-D0WDQ6 Flash: 16 MB Firmware capabilities Webhooks (URL actions): 20 with 5 URLs per hook Scripting: mJS MQTT: Yes CoAP: No