# Shelly 3EM Smart 3-Phase Energy Meter with Contactor Control

- Canonical URL: https://www.netxl.com/energy-management/shelly-3em-smart-3-phase-energy-meter-contactor-control/
- Brand: Shelly
- SKU / part number: SHELLY-3EM
- EAN (GTIN-13): 3800235262214
- Category: Energy Management (https://www.netxl.com/energy-management/)

## Pricing (GBP, guest pricing — trade customers see account pricing via the API)
| Quantity | ex VAT | inc VAT |
| --- | --- | --- |
| 1+ | £82.99 | £99.59 |
| 5+ | £82.99 | £99.59 |
| 10+ | £82.99 | £99.59 |

## Availability and shipping
- Availability: Out of stock
- Shipping: Royal Mail Tracked - Next Working Day — £7.19, 1 working day(s)
- This product is end of life

## Description

The Shelly 3EM is a smart 3-phase energy meter with contactor control, supporting three independent measurement channels, each of which can handle up to 120A. The 3EM reports power, voltage, current, overall energy and power factor of the system to which it's attached, with 365 days of internal memory in case a WiFi connection is not available.

The Shelly 3EM includes 3 Current Transformers, rated for 120A each, and also features Contactor control which is compatible with any size load for which it's rated. The 3EM can help monitor electricity usage in real time, with instant notifications to your phone in case an appliance consumes power above a threshold of your choice.
The 3EM also allows for contactor control Smart energy metering, helping you identify any redundant energy consumption, as well as providing real-time information about the efficiency of any renewable energy sources you may have in the system like solar panels or wind turbines.

## What's in the box

- 1 x SHELLY-3EM
- 3 x 120A Clamps
- 1 x Installation Guide

## Specifications

| Specification | Value |
| --- | --- |
| Power Supply | 240V |
| Connectivity | WiFi |
| Purpose | Energy Monitoring |
| Product Series | Pro |

## Documents

- [Shelly 3EM User Manual](https://www.netxl.com/shelly/docs/shelly-3em-user-manual.pdf)

## Programmatic access

- This page in HTML: append a trailing slash instead of `.md`
- NetXL Customer API (real-time customer pricing, stock, ordering): https://api.netxl.com — OpenAPI at https://api.netxl.com/openapi.yaml
- MCP server for AI agents: https://mcp.netxl.com
- Machine-readable site index: https://www.netxl.com/llms.txt
- API documentation: https://www.netxl.com/api-docs.md