WHY SHELLY PRO 3EM?
Next-generation 3-Phase Energy Meter
Shelly Pro 3EM-400 is a Wi-Fi-operated DIN-mountable 3-Phase Energy Meter with Wi-Fi, Bluetooth, and LAN connectivity. With active energy measurement accuracy of 1%, Shelly Pro 3EM-400 can be used to monitor the consumption of home appliances, business electric circuits, and office equipment individually. It features 60 days of on-device historical data with a 1-minute resolution for each phase. Additionally, its scripting functionalities allow for the execution of complex scenes and provide broader monitoring abilities.
Functionalities
4-quadrant measurement
Measure capacitive and inductive load types of active imported and exported energies.
Accuracy class B (active energy)
Shelly Pro 3EM-400 has a measurement accuracy of 1%.
MODBUS
support
Allows for easy and fast deployment in existing industrial installations.
Wi-Fi, LAN, and Bluetooth connectivity
Simultaneous Ethernet and Wi-Fi usage. MQTT, inbound and outbound WebSocket, UDP, mTLS support.
Power
monitoring
Monitors mono-phase electrical systems with up to 3 points simultaneously. Fast notifications and at least 60 days of 1-minute records storage.
Scripting
functionalities
Shelly Pro 3EM-400 fully supports mjS scripting, allowing you to create further features and functionalities.
FEATURES
Industry-grade security
Shelly Pro 3EM-400 supports mTLS for MQTT, HTTP, and secure outbound WebSockets. Its industry-grade security allows for direct connections to your cloud infrastructure, reducing the cost of deploying complex networks and VPNs.
Endless use applications
USE CASES
Industrial installations
Shelly Pro 3EM-400 brings support for MODBUS for voltage, current, power, and energies. You can accurately sample your energy usage and instantaneous values of voltage, current, and power. Our new firmware platform allows for custom implementation that can report as fast as every 100ms to your infrastructure.
USE CASES
2-way energy consumption monitoring
Monitor your home, office, or factory, and avoid additional expenses or drops in voltage that can damage your appliances and devices. Shelly Pro 3EM-400 can calculate 2-way consumption: produced and used energy for each of the three phases. The device can be configured to measure three separate circuits of a mono-phase electrical system. View the quality of your electricity network regarding active power, reactive power, voltage, and power factor.
USE CASES
Local control
Thanks to Shelly Pro 3EM-400’s scripting functionalities and webhooks, you can now easily control other Shelly or Wi-Fi devices on your local network. Use these capabilities to set exact parameters for heating, cooling, or electric vehicle charging based on PV production and have your devices automatically shed power usage. All these work without using a cloud.
USE CASES
Solar panels monitoring and control
Keep track of how much energy your solar panels or wind turbines are generating and save effortlessly. Shelly Pro 3EM-400 provides real-time information about the efficiency of the solar and wind energy system, as well as historical data on how much energy has been generated and consumed every minute for the past 60 days. This helps you control the energy flow, getting the most out of your solar panels and wind turbines. To take it a step further, connect Shelly Pro 3EM- 400 to your other Shelly devices and create scenes to trigger desired actions like turning off appliances or sounding alarms.
Specifications
| PHYSICAL | |
|---|---|
| Size (HxWxD): | 94x19x69 ±0.5 mm / 3.70×0.75×2.71 ±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 – 400 A |
| Ammeters accuracy: | ±1 % (5 – 400 A), ±2 % (0- 5 A) |
| Power and energy meters: | Active and apparent power, Active and apparent energy, Power factor, Fundamental active and fundamental reactive energy |
| No load threshold: | 30 VA per phase |
| 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: | 2400 – 2495 MHz |
| Max. RF power: | <20 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 |
PRODUCT SUPPORT
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