Shelly Pro 3EM-400 is a three-phase DIN rail mounted energy meter. It has been enhanced with all the flexibility of gen2 firmware and LAN connectivity, providing professional integrators with additional options for end-user solutions. Shelly Pro 3EM-400 displays the accumulated energy as well as the instantaneous voltage, current and power factor per phase in real time. Can measure up to 400 A for each phase and the neutral 4-quadrant measurement with multiple connection types Class B accuracy for Active energy (Compliance with IEC 62053-21 based on manufacturer tests) Suitable for photovoltaics Detection of errors in the phase sequence (option) Optical pulse display of energy consumption Measurement accuracy of 1% Storage that can be stored in 1 minute over a period of up to 60 days can be accessed at intervals Package contains 3 x 400 A current transformers 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 expanded 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 easy and quick use in existing industrial plants.
WiFi, LAN and Bluetooth connectivity:
Simultaneous Ethernet and WiFi use. MQTT, inbound and outbound WebSocket, UDP, mTLS support.
Power Grid Monitoring:
Monitors single-phase electrical systems with up to 3 points simultaneously. Fast notifications and at least 60 days of 1-minute recording retention.
Scripting functionalities:
Shelly Pro 3PM fully supports mjS scripting, allowing you to create additional features and functionality.
USE CASES
Industrial facilities
Shelly Pro 3EM 400A offers 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 100ms.
Two-way energy consumption
monitoring Monitor your home, office or factory to avoid unnecessary expenses or brownouts that can damage your home and office equipment. 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 400A and the webhooks, you can easily control other Shelly or WLAN devices on 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-400 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.
Technical data FEATURES Size (HxWxD): 94x19x69 ±0.5 mm Weight: 62 ±1 g Mounting: DIN rail Screw terminals max torque: 0.4 Nm Cross section of the conductor: 0.5 to 2.5 mm² / 20 to 14 AWG (solid, stranded and ferrule) Length of the conductor : 6 to 7 mm Device material: Plastic Color: White FUNCTIONS Ambient temperature: -20 °C to 40 °C Humidity: 30% to 70% RH Max. altitude: 2000 m CONNECTION Power supply AC: 110 - 240 V, 50/60 Hz power supply DC: N/A Device energy consumption: FREQUENCY RF band: 2.4 MHz Max. RF power: MCU CPU: ESP32-D0WDQ6 Flash: 16 MB FIRMWARE CAPABILITIES Webhooks (URL actions): 20 with 5 URLs per hook Scripting: mJS MQTT: Yes CoAP: No