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Shelly Pro 3EM

Shelly Pro 3EM

Regular price $310.99
Regular price Sale price $310.99
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The Shelly PRO 3EM is a professional-grade, DIN rail mountable energy meter designed for three-phase electrical systems. Featuring the advanced capabilities of Shelly's Gen2 firmware, this meter offers unparalleled flexibility and seamless connectivity.

Equipped with LAN and Wi-Fi networking, the Shelly PRO 3EM can operate as a standalone unit within a local network, providing real-time insights into your electrical system. It reports accumulated energy usage as well as instantaneous voltage, current, active power, and apparent power measurements per phase.

Data is stored in the meter's non-volatile memory, allowing you to review usage history for up to 60 days in 1-minute intervals. This detailed energy data gives you the insights needed to optimize your power consumption and identify potential inefficiencies.

Included with the Shelly PRO 3EM are three 120A current clamps, providing a complete metering solution right out of the box. The DIN rail mounting design ensures a streamlined and professional installation in electrical panel environments.

Whether you're a facility manager, energy auditor, or simply looking to closely monitor your energy usage, the Shelly PRO 3EM is an advanced, connected three-phase energy meter built to deliver the performance and flexibility you need.

*The Device does not have a built-in relay. Contactor control is provided using a Shelly Pro Addon attached to the Shelly Pro 3EM.




Size (HxWxD):

94x19x69 ±0.5 mm


62 ±1 g 


DIN rail

Screw terminals max torque:

0.4 Nm / 4.43 lbin

Conductor cross section:

0.5 to 2.5 mm² (solid, stranded, and bootlace lugs)

Conductor stripped length:

6 to 7 mm

Shell material:





Ambient temperature:

-20 °C to 40 °C


30 % to 70 % RH

Max. altitude:

2000 m


Power supply voltage AC:

100 - 260 V, 50/60 Hz

Power supply voltage DC:


Power consumption:

< 3 W

Sensors, meters

Internal-temperature sensor:


Voltmeters (RMS for each phase):

100 - 260 V

Voltmeters accuracy:

±1 %

Ammeters (RMS via CT for each phase and the Neutral):

0 - 120 A

Compatible CT

CT 120A

Ammeters accuracy:

±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

Channel-to-channel calibration minimum load

500 W per channel

No load threshold:

30 VA per channel

Measurement data storage:

At least 60 days of 1 min data resolution

Data export:

  • CSV for PQ recorded values
  • JSON format export through RPC


RF band:

2400 - 2495 MHz

Max. RF power:

<20 dBm

Wi-Fi protocol:

802.11 b/g/n

Wi-Fi Range:

Up to 30 m indoors and 50 m outdoors
(Depends on local conditions)

Bluetooth Protocol:


Bluetooth Range:

Up to 10 m indoors and 30 m outdoors
(Depends on local conditions)


Australia and New Zealand Safety Standard (AS/NZS) compliant, SDoC available on request.

Shelly Smart Control App Google Play 

Shelly Cloud App Google Play App Store Download

Shelly Smart Control App Apple

Shelly Cloud App Apple App Store Download

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