Shelly Pro 3EM


DIN-mountable three-phase energy meter

Tax included


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Shelly Pro 3EM New generation DIN mountable three-phase energy meter

Shelly Pro 3EM is a DIN rail mountable three-phase energy meter. Enhanced with all the flexibility of firmware

gen2 and LAN connectivity, provides professional integrators with additional options for end customer solutions.

Shelly Pro 3EM reports accumulated energy, instantaneous voltage,

the current and power factor per phase.

Why shelly pro 3em?

Shelly Pro 3EM is a DIN mountable 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 monitor

individually the consumption of any household appliances, electrical circuits and office equipment.

Presents 60 days of historical data on the device with 1 minute resolution for each stage. Also, his

scripting capabilities enable the execution of complex scenes and provide broader monitoring capabilities.

Industrial grade security

Shelly Pro 3EM supports mTLS for secure outgoing MQTT , HTTP and WebSockets. Its industrial-grade security

allows direct connections to your cloud infrastructure, reducing the cost of implementing complex networks and VPNs.

Industrial installations

Shelly Pro 3EM offers MODBUS support for voltage, current, power and energies.

It is possible to accurately sample the energy consumption and the instantaneous values of voltage, current and power.

The new firmware platform allows for customized implementation

which can signal to your infrastructure every 100ms.

Two-way monitoring of energy consumption

Monitor your home , office or factory and avoid additional expenses or brownouts that may arise

damage your home appliances and devices. Shelly Pro 3EM can calculate consumption a

2-way: energy produced and consumed 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 grid in

terms of active power, reactive power, voltage and power factor.

Local control

Thanks to the scripting features and webhooks of Shelly Pro 3EM , you can now easily control

other Shelly or Wi-Fi devices on your local network. Use these features to set parameters

exact for heating, cooling or electric vehicle charging depending on production

PV and have your devices automatically reduce energy consumption .

All of these work without using a cloud.

Monitoring and control of solar panels

Track how much energy your solar panels or wind turbines are generating and save effortlessly.

Shelly Pro 3EM provides real-time information about solar and wind energy system efficiency,

as well as historical data on how much energy was generated and consumed every minute over the last 60 days.

This helps you control the flow of energy , getting the most out 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 for

activate desired actions such as turning off appliances or sounding alarms.

Shelly smart control

Shelly Smart Control is here! An app to control your spaces, energy consumption and expenses.

Full compatibility

Shelly devices are compatible with Alexa, Google Home, Android and iOS .

Together with the voice assistant, you can command Shelly devices using just your voice!

NB. The package includes 3 current transformers Shelly from 120A

Features and Functionality:

  • 4 Quadrant Measurement : Measures capacitive and inductive load types of imported and exported active energies.
  • Accuracy class B (active energy): Shelly Pro 3EM has a measurement accuracy of 1%.
  • MODBUS support : Enables quick and easy implementation into existing industrial installations.
  • Wi-Fi, LAN and Bluetooth connectivity : Simultaneous use of Ethernet and Wi-Fi. MQTT, incoming and outgoing WebSockets, UDP, mTLS support.
  • Power Monitoring : Monitor single phase electrical systems with up to 3 points simultaneously. Fast notifications and at least 60 days of 1 minute record storage.
  • Scripting Features : Shelly Pro 3PM fully supports mjS scripting, allowing you to create additional features and functionality.
  • The package includes 3 x 120A current transformers

Product Details

Data sheet

110-240V, 50/60Hzp
Working temperature
-20°C to +40°C
Working humidity
From 30% to 70%
Voice Control
Amazon Alexa, Google Home and Siri
Mobile application
Shelly Cloud
Communication Protocol
Communication Protocol
Communication Protocol
- 3W
Number of Channels
Max torque of screw terminals
0.4Nm / 4.43lb
Conductor section
0.5 to 2.5 mm² / 20 to 14 AWG (solid, stranded, and lug)
Stripped length of conductor
6 to 7 mm / 0.24 to 0.28 inch
Voltmeters (RMS for each phase)
100 - 260V
Accuracy of voltmeters
±1 %
Ammeters (RMS via CT for each phase and Neutral)
0 - 120A
Accuracy of ammeters
±1 % (2 - 120 A), ±2 % (1 - 2 A), ±5 % (0 - 1 A)
Power and energy meters
Active and apparent power, Active and apparent energy, Power factor, Fundamental active and fundamental reactive energy
No loading threshold
30 VA per phase
Storage of measurement data
At least 60 days of 1 min data resolution
Data export
in JSON format of CSV logged values for PQ via RPC
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