Shelly 3EM

£99.99 Excl. VAT £83.33

Only 6 left in stock

WiFi-operated professional 3-phase energy meter with contactor control

Individually monitor the consumption of any of your home appliances, electric circuits and office equipment (lights, sockets, security systems, heating and cooling, etc.). Monitor consumption of your whole home or generated electricity from solar panels with a one of its kind WiFi-operated 3 phase energy meter with contactor control functionality.

  • Wi-Fi Connected

    Shelly 3EM can be connected to any Wi-Fi network or can operate as an Access Point.

  • Power Supply

    Each phase of Shelly 3EM must be 110-230V ±10, 50/60Hz AC

  • Monophase Systems

    Shelly 3ЕМ can also monitor monophase electrical systems with up to 3 circuits simultaneously.

  • Contactor Control

    Shelly 3EM has an integrated 10A relay output for contactor control.

  • Mobile App Control

    Turn Shelly 3EM on/off directly from your smartphone or tablet. You can manage Shelly 3EM’s output from the Shelly Cloud app, MQTT or Rest API.

  • Over-consumption and Excess-energy Protection

    Shelly 3EM can automatically notify and/or switch off the circuit if consumption or energy reaches the preset limit.

  • Embedded Web Server

    Turn on/off and monitor consumption directly from its interface without the need of any additional controller or hub, thanks to the embedded web server.

  • Sunrise/Sunset Schedules

    Shelly 3EM can automatically turn on/off the power based on sunrise/sunset times.

  • Weekly Scheduling

    Create custom daily schedules for your devices.



  • Power supply 110-230V ±10, 50/60Hz AC
  • Power metering 3 channels, up to 120A each
  • Contactor control Maximum load 10A
  • Electrical consumption < 1W


  • Consumption history 365 days built-in energy history (Wh)
  • Complies with EU standards • RE Directive 2014/53/EU
    • LVD 2014/35/EU
    • EMC 2004/108/WE
    • RoHS2 2011/65/UE
  • Working temperature -40°C to +40°C
  • Additional features • Overpower shutdown
    • Consumption limit


  • Wireless/WiFi Protocol 802.11 b/g/n (2.4 GHz)
  • Frequency 2400 – 2484 MHz
  • Operational range (depending on local construction) • up to 50 m outdoors
    • up to 30 m indoors
  • Radio signal power 1mW


  • (H x W x L) 73 x 57 x 22 mm

How it works?

Download the Shelly Cloud application on your smartphone or tablet
Connect to your Wi-Fi router
Place the device wherever you wish


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20% OFF!!
Get 20% off your entire order in honour of our new website!
*Minimum spend £100. Valid until July 16.
20% OFF!!
Get 20% off your entire order in honour of our new website!
*Minimum spend £100. Valid until July 16.