Shelly - Top-hat rail - "Pro 3EM 400A" - Electricity meter - incl. 3x 400A terminals - measuring function - WLAN - L

Shelly Pro 3EM-400 is a three-phase energy meter for DIN rail mounting. It has been enhanced with all the flexibility of gen2 firmware and LAN connectivity, offering professional integrators additional options for end customer 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 conductor
• 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 up to 1%
• Memory that can be recalled at 1-minute intervals over a period of up to 60 days
• Package contains 3 x 400 A current transformers

WHY SHELLY PRO 3EM?

next generation 3-phase current consumption meter

The Shelly Pro 3EM is a WLAN-powered, DIN-mountable 3-phase power meter with WLAN, Bluetooth and LAN connectivity. With an active energy measurement accuracy of 1%, 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, scripting functionality allows the execution of complex scenarios and provides advanced monitoring capabilities.

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.

WLAN, LAN and Bluetooth connectivity:

Simultaneous Ethernet and WLAN use. MQTT, incoming and outgoing 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 storage.

Scripting functionalities:

Shelly Pro 3PM fully supports mjS scripting, allowing you to create more features and functionalities.

USE CASES

Industrial facilities

Shelly Pro 3EM 400A offers MODBUS support for voltage, current, power and energies. Your energy consumption and instantaneous values of voltage, current and power can be accurately recorded. Our new firmware platform enables a customized implementation that can report to your infrastructure every 100 ms.

Two-way energy consumption monitoring

Monitor your home, office or factory to avoid unnecessary expenses or voltage drops that can damage your household and office appliances. Shelly Pro 3EM can calculate two-way consumption: energy produced as well as energy 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.

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 in your local network. Use these functions to set precise parameters for heating, cooling or electric vehicle charging based on your PV generation and automatically disconnect your devices from power consumption. All this works without having to use a cloud.

Monitoring and control of solar panels

Monitor how much energy your solar panels or wind turbines are generating - 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 segments. This allows you to control the flow of energy and make the most efficient use of your solar panels and wind turbines. 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 triggering an alarm.

Technical specifications