
The Shelly 3EM-63W Gen3 is a DIN-rail meter for three-phase or single-phase installations up to 63A, with direct wiring and no external clamps: it measures consumption and, with four-quadrant metering, exported energy too. Two Plug S Gen3 plugs round off the picture at appliance level. All over Wi-Fi in the Shelly app.
What it does
- The Shelly 3EM-63W Gen3 measures each phase's current directly, with no clamps, up to 63A.
- Four-quadrant metering tells imported energy from exported energy, which is useful with a solar system.
- The app shows power per phase, the total and charts by hour, day and month.
- The two Plug S Gen3 measure the consumption of two appliances and switch off by hand, on a schedule or from a scene.
- A threshold on total power can send you a notification or switch off one of the sockets.

How to install it
What's in the kit

| Qty | Item | Unit price | Subtotal |
|---|---|---|---|
| 1 | Shelly 3EM-63W Gen3 three-phase meterEnergy monitoring | €66.99 | €66.99 |
| 1 | Shelly Plug S Gen3, 2 pcsSmart plug | 34,49 € | 34,49 € |
| 1 | BTicino surface-mount consumer unit, 8 modulesAccessory: DIN enclosure · 4 DIN modules + spare space | €18.50 | €18.50 |
| 1 | Assorted crimp ferrules, 900 piecesAccessory: wiring · wiring inside the distribution board | €11.99 | €11.99 |
| 1 | Wago 221-413 lever connectors, 10 piecesAccessory: connections · connections inside the distribution board | €8.99 | €8.99 |
| Kit total | 140,96 € |
Prices taken from Amazon.it on 22/09/2026: they can change, and the price shown by Amazon at the time of purchase is the one that applies.
Add the whole kit to your Amazon basket5 items, 5 pieces · the options are added from the individual linksDelivery, returns and warranty: Amazon shows these at the time of purchase.
Before you order
Do you need a hub?
No. The Shelly devices in the kit connect straight to the home Wi-Fi router and are managed from the Shelly app, on a smartphone or in a browser. Good Wi-Fi coverage is needed at the consumer unit: metal enclosures and cellars weaken it.
Does it work with Alexa, Google or Apple?
The kit is managed from the Shelly app, with charts and consumption history. Through Shelly's integrations the devices can be brought into Alexa and Google Home, for example to switch off a load by voice. Readings and energy-based automations are best kept in the Shelly app.
Do you need an electrician?
Yes. The devices mount in the distribution board or in a small enclosure next to it and connect to the 230V line: the work must be done by qualified personnel with the system switched off. The kit gives the installer the enclosure, ferrules and connectors needed for tidy wiring.
What happens if the internet goes down?
Metering carries on: the Shelly devices keep logging the data and stay reachable from the app on the home network. Without internet you cannot see the data while you are out and cloud-based scenes may not run; actions configured directly on the devices keep working locally.
Can I add more devices?
Yes. In the same app you can add metering plugs, 1PM relays for other loads and meters for further circuits. Write to us from the contact page if you would like a kit built around your own consumer unit.
Do I need to buy any batteries?
No. Every device in the kit runs off mains power and uses no batteries. So there are no spares to keep at home and no charge levels to check: if the power goes off, the devices stop and start again on their own when it comes back.
How does it differ from the version with clamps?
The 3EM-63W Gen3 takes the line current straight through it, up to 63A per phase, and it is compact. Models with clamps, like the Pro 3EM, are not inserted into the line and also suit higher currents. For supplies above 63A the clamp version is needed.
What if a product is out of stock on Amazon?
It happens, especially with multipacks and newly released products. Write to us from the contacts section with the kit code and the product you can't find: we'll point you to an alternative that fits the rest of the kit, so it keeps working as described.
Why buy on Amazon?
We put the kit together and tested it ourselves, picking the parts and checking that they work together. Purchase, payment, returns and warranty are handled by Amazon: delivery times, returns and warranty are shown on Amazon at the time of purchase, item by item.
Notes
Not included
- Wi-Fi router and a repeater if needed
- Electrical work in the consumer unit
- Protective devices upstream of the meter
- Appliances to monitor
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