Shelly PRO 3EM-120A next generation of professional 3-phase energy meters with contactor control

The Shelly Pro 3EM is a three-phase, Wi-Fi-enabled, DIN rail-mounted energy meter. It has connectivity via Wi-Fi, Bluetooth and LAN. With an active energy measurement accuracy of 1 %, the Shelly Pro 3EM is suitable for monitoring the consumption of household appliances, electrical circuits and office equipment individually. The device provides 60 days of data history on the device with a resolution of 1 minute for each phase. In addition, it is scriptable, allowing complex scenarios to be run and wider control possibilities to be explored. 

Enriched with all the functionalities of the second generation Shelly software and LAN connectivity, it offers additional options to professional integrators for end-to-end solutions. Shelly Pro 3EM displays in real time the total energy consumed and the current voltages, currents and power factors per phase.

Features: 

• Measurement in 4 quadrants with multiple connection types: measurement of capacitive and inductive load types for imported and exported energy.
• Accuracy class B (IEC 62053-21) for active energy: the accuracy of the Shelly Pro 3EM is 1 %.
• Ready for photovoltaics
• Fault detection in phase sequence* (optional)
• Optical indication of energy consumption
• Package contains 3 120A current transformers
• MODBUS SUPPORT: Allows easy and fast integration into existing industrial installations.
• Wi-Fi, LAN and Bluetooth connectivity: simultaneous use of Ethernet and Wi-Fi. Support for MQTT, WebSocket in and out, UDP, mTLS.
• Energy monitoring: monitoring single-phase systems with up to 3 measurement points at the same time. Fast notification and at least 60 days of stored data with 1 minute resolution. Stores data in non-volatile memory.
• Scripting functions:Shelly Pro 3EM fully supports scripting with mjS, allowing you to create additional functions and customisations.
• Industry-grade security: the Shelly Pro 3EM supports mTLS for MQTT, HTTP and secure outbound WebSockets. Its industrial-grade security allows direct integration with cloud infrastructure, reducing the cost of setting up complex networks and VPNs.

Shelly PRO 3EM - EXAMPLES OF USE

Industrial installations
Shelly Pro 3EM supports MODBUS for voltage, current, power and energy. It allows accurate monitoring of energy consumption and current values of voltage, current and power. The new software platform allows customised implementations that can report every 100 ms.

Two-way monitoring of energy consumption
Control consumption in your home, office or factory and avoid extra costs or voltage drops that can damage your devices. Shelly Pro 3EM allows you to calculate the energy consumed and generated for each of the three phases. The device can be configured to measure three separate circuits of a single phase system. See the quality of your power grid in terms of active power, reactive power, voltage and power factor.

Local governance
Thanks to the scripting functions and web keys of Shelly Pro 3EM, you can easily control other Shelly or Wi-Fi devices on your local network. Use these options to set precise parameters for heating, cooling or charging electric vehicles according to the output from solar power plants and enable automatic consumption reduction. All this without using the cloud.

Control and monitoring of solar panels
Keep track of how much energy your solar panels or wind turbines are generating and save effortlessly. Shelly Pro 3EM provides real-time data on system performance and historical data on energy produced and consumed every minute for the last 60 days. So you can better control your energy flow and get the most out of your system. In addition, you can connect the device to other Shelly devices and create scenarios to trigger actions such as turning off devices or triggering alarms.

Shelly PRO 3EM - SPECIFICATIONS