Shelly Pro 3EM (3xClamp 400A), 3-channel wifi relay and contactor control

The Shelly Pro 3EM is a three-phase energy meter mounted on a DIN rail. Enhanced with all the flexibility of gen2 firmware and LAN connectivity, it offers professional integrators additional options for end-customer solutions. Shelly Pro 3EM reports accumulated energy as well as instantaneous voltage, current and power factor per phase in real time.
4-quadrant measurement with multiple connection types
Accuracy class B (IEC 62053-21) active energy
Photovoltaic ready
Phase sequence error detection* (option)
Indication of the optical pulse of energy consumption
Measuring accuracy up to 1%
Stores data in non-volatile memory that can be retrieved for up to 60 days at 1-minute intervals
The package includes 3 pieces of 400A current transformers

The Shelly Pro 3EM is a DIN-mountable Wi-Fi operated three-phase energy meter with Wi-Fi, Bluetooth and LAN connectivity. With an active energy measurement accuracy of 1%, Shelly Pro 3EM can be used to individually monitor the consumption of any household appliances, electrical circuits and office equipment. It has 60 days of historical data per device with a resolution of 1 minute for each phase. In addition, its scripting capabilities enable the execution of complex scenes and provide broader monitoring capabilities.

Shelly Pro 3EM supports mTLS for secure outgoing MQTT, HTTP and WebSockets. Its industrial-grade security enables direct connections to your cloud infrastructure, reducing the cost of implementing complex networks and VPNs.

Shelly Pro 3EM provides MODBUS support for voltage, current, power and energy. You can accurately sample power consumption and instantaneous values ​​of voltage, current and power. Our new firmware platform enables custom deployment that can report every 100ms to your infrastructure.

Monitor your home, office or factory and avoid overspending or voltage drops that can damage your appliances and devices. Shelly Pro 3EM can calculate consumption in two directions: energy produced and used for each of the three phases. The device can be configured to measure three separate circuits of a single-phase electrical system. View the quality of your electricity network in terms of active power, reactive power, voltage and power factor.

Thanks to Shelly Pro 3EM's scripting features and webhooks, you can now easily control other Shelly or Wi-Fi devices on your local network. Use these capabilities to set the exact parameters for heating, cooling or charging electric vehicles based on photovoltaic production and have your devices automatically reduce energy consumption. All of this works without using a cloud.

Track how much energy your solar panels or wind turbines are generating and save effortlessly. Shelly Pro 3EM provides real-time information on solar and wind power system efficiency, as well as historical data on how much power was generated and consumed every minute over the past 60 days. This helps you control the flow of energy, making the most of your solar panels and wind turbines. To take it a step further, connect Shelly Pro 3EM to your other Shelly devices and create scenes to trigger desired actions, such as turning off appliances or sounding alarms.