Shelly 3EM Three-phase WiFi Energy Meter

The Shelly 3EM is a 3-phase energy meter that measures up to 120A per phase through the enclosed current measuring clamps. It is also possible to measure three individual phases. With the Shelly 3EM, you can monitor the total consumption of your flat or house and locate power guzzlers through energy measurement and optimise electricity consumption to save energy. The Shelly 3EM also has an output to control a contactor or relay. When activated, the measurement data is stored in the cloud, and you can display your consumption graphically in the APP. The meter is calibrated by the manufacturer along with the included current transformer clamps, achieving an accuracy of over 99%. Shelly is intended for DIN rail mounting in the fuse box/electrical cabinet.

Warning:Working on a 230V/400V network is dangerous and can lead to fatal accidents. Always disconnect the device from the network first and switch off the fuses when connecting or when the housing is open. We assume no liability for improper use of the device. If you do not trust yourself to install the device, have it installed by an electrician.

Features of the Shelly 3EM:

Current measurement from 3-phase networks with up to 120A each
Output for contactor control or load up to 10A
365-day internal memory if WiFi is not available
Voltage measurement and configurable alarm notification
Measurement of the energy fed back into the grid at solar or wind farms
The Shelly 3EM has a programming header (RM 1.27mm) that can be used to flash alternative firmware

Shelly 3EM connection mode:

Access Point Mode:

Here, you can set up and control any device by simply connecting your smartphone to the Shelly WLAN and controlling Shelly via the integrated web server.

Local Mode:

Connect the Shelly EM to your local WiFi network to control any electrical device at home. You can control up to 65,000 Shelly components in a WiFi network.

Cloud Mode:

Shelly 3EM is accessible in this mode from anywhere in the world. Once you have installed Shelly and connected it to a WiFi network with internet access, download the mobile Shelly Cloud application (for Android or iOS) and install it on your smartphone, and connect all your Shelley's to your account.

Shelly 3EM Documentation and Downloads:

Technical Details:

Manufacturer: Allterco
Power Supply: 110-230V ±10, 50/60Hz AC
Mounting: DIN rail
Measurement Functions: Energy consumption and power feedback
Measured data: Voltage, current, power
Compatible with all major international voltage standards.
Contactor control – Maximum Load: 10A/230V
Operating temperature: -40 to +40°C
Wireless signal power: 1mW
Wireless/WiFi Protocol: 802.11 b/g/g/n
Radio Frequency: 2400 - 2500 MHz
Range: Up to 50m outdoors and up to 30m indoors (depending on the building material)
Electrical Power Consumption: < 1 W
Microprocessor control
Three independent measuring channels with up to 120A each
Can connect to any WiFi network or be operated as an access point.
365-day internal memory if WiFi is not available.
Energy measurements and configurable alarm notification
Dimensions (LxWxH): 73 x 22 x 57mm
Weight: 485g