The Shelly Pro 3EM is a WiFi-powered, DIN-mountable 3-phase energy meter with WiFi, Bluetooth and LAN connectivity. With its 1% active energy metering accuracy, the Shelly Pro 3EM can be used to monitor the consumption of all household appliances, circuits and office equipment individually. 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 advanced monitoring capabilities.
The Shelly Pro 3EM is a WiFi-powered, DIN-mountable 3-phase energy meter with WiFi, Bluetooth and LAN connectivity. With its 1% active energy metering accuracy, the Shelly Pro 3EM can be used to monitor the consumption of all household appliances, circuits and office equipment individually. 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 advanced monitoring capabilities.
4-quadrant measurement
For measuring the capacitive and inductive load types of imported and exported active energy.
Accuracy class B (active energy)
The Shelly Pro 3EM has a measurement accuracy of 1%.
MODBUS support
Allows easy and quick use in existing industrial plants.
Wi-Fi, LAN and Bluetooth connectivity
Simultaneous Ethernet and WiFi usage. MQTT, inbound and outbound WebSocket, UDP, mTLS support.
Power grid monitoring
Simultaneous monitoring of single-phase electrical systems with up to 3 outlets. 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.
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.
Shelly Pro 3EM offers MODBUS support for voltage, current, power and energies. Your energy consumption and instantaneous values of voltage, current and power are accurately recorded. Our new firmware platform enables a custom implementation that can report to your infrastructure every 100 ms.
Monitor your home, office or factory to avoid unnecessary expenses or voltage drops that can damage your household and office equipment. Shelly Pro 3EM can calculate two-way consumption: energy produced and 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 the quality of your power grid in terms of active power, reactive power, voltage and power factor.
Thanks to the Shelly Pro 3EM's scripting functionalities and webhooks, you can easily control other Shelly or WiFi devices on your local network. Use these features to set precise parameters for heating, cooling or charging electric vehicles based on your PV generation and to automatically disconnect your devices from power consumption. All of this works without having to use a cloud.
Watch how much energy your solar panels or wind turbines are generating - 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 with your other Shelly devices and create scenarios to trigger desired actions such as switching off household appliances or raising an alarm.
| 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: | < 3W |
| Sensors, meters | |
| Temperature sensor: | Yes |
| Voltmeters (RMS for each phase): | 100 - 260V |
| Voltmeter accuracy: | ±1% |
| Ammeters (RMS via CT for each phase and the Neutral): | 0 - 120A |
| Ammeter accuracy: | ±1% (2 - 120A), ±2% (1 - 2A), ±5% (0 - 1A) |
| 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 minute data resolution |
| Data export: | CSV for PQ recorded values, JSON format export through RPC |
| radio | |
| RFband: | 2401 - 2495MHz |
| Max. RF power: | <20dBm |
| 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 | |
| CPUs: | ESP32-D0WDQ6 |
| Flash: | 16MB |
| Firmware capabilities | |
| Webhooks (URL actions): | 20 with 5 URLs per hook |
| Scripting: | mJS |
| MQTT: | Yes |
| CoAP: | No |
Manufacurer:
Weight:
Benjamin M. Tanner – Managing Director and Security Expert
Do you need individual advice for your project? Do you have any questions about products, project planning or installation? As a managing director with over 18 years of experience in the field of security technology, I would be happy to help you and answer your personal concerns.
