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Shelly Pro EM - 50A
Shelly Pro EM - 50A
Shelly Pro EM - 50A
Shelly Pro EM - 50A

Shelly

Shelly Pro EM - 50A

SKU 3800235268148

For two circuits, or supply and solar, metered from the DIN rail. The Shelly Pro EM - 50A measures up to 50 A through its clamps and can switch a 2 A contactor.

Manufacturer: Shelly
£78.32 inc VAT

Key features

Wi-Fi Bluetooth
  • Measures energy use through current clamps
  • Switches loads up to 2 A
  • Wi-Fi and Bluetooth connectivity
  • Powered from 100 - 260 V
  • Schedules, plus scripting, MQTT and webhooks
  • Overheating protection
  • Mounts on a standard DIN rail
  • Set up and run from the Shelly Smart Control app
Product details Manual

Why Shelly Pro EM - 50A

The Shelly Pro EM - 50A measures up to 50 A through its clamps and can switch a 2 A contactor

Energy metering

Reads current through its clamps and keeps an energy total, so the app shows what the house or a circuit uses.

Load rating

Switches loads up to 2 A. The manual lists the limits for lamps, motors and other load types.

Connectivity

Connects over Wi-Fi and Bluetooth. Setup runs from the phone, then the device joins the home network.

Local automation

Schedules, scripting, MQTT and webhooks run on the device itself, so routines keep working if the internet drops.

Built-in protection

Overheating protection cuts the output before the device or the load is put at risk.

DIN-rail mounting

Clips onto a standard DIN rail in the consumer unit, next to the breakers it works with.

What the Shelly Pro EM - 50A does

The Shelly Pro EM - 50A is a two-channel DIN-rail energy meter with a contactor output.

Good for:

  • Monitoring two circuits or supply and solar
  • Switching a contactor from readings
  • Single-phase homes and small premises

Key facts

  • Current range: 0 - 50 A
  • Accuracy: ±1 % (5 - 50 A), ±2 % (0 - 5 A)
  • Relay output: 2 A
  • Measures: Active and apparent power; Active and apparent energy; Power factor

Works with

Runs from the Shelly Smart Control app and works with Amazon Alexa, Google Home and Home Assistant, with no hub needed. Connectivity: Wi-Fi, Bluetooth, LAN.

Also consider

Browse Relays & dimmers, Shelly Pro, all Shelly and what Shelly is.

Guide: Which Shelly energy monitor for a UK home?

Questions

Do I need a hub for the Shelly Pro EM - 50A?

No. It connects to your home Wi-Fi directly or to the network by cable.

Should an electrician fit it?

We recommend a qualified electrician for anything connected to mains wiring. The manual is linked on this page.

What's the maximum load?

The contactor output switches up to 2 A.

Does it work with Home Assistant without the cloud?

Yes. It works with Home Assistant on the local network.

Shelly Smart Control

One free app for every device

This device is added and run from Shelly Smart Control, the free app for iPhone and Android.

  • Rooms, groups and scenes for the whole home
  • Live power readings on devices that measure energy
  • Control away from home, or keep it on the local network
Download on theApp Store Get it onGoogle Play

iPhone needs iOS 15 or later. The app is published by Shelly.

Shelly Smart Control on two phones, showing room energy use and live device status.