10 Best Shelly Pro 3em 400a of 2025

Tested and Reviewed: Top 10 Shelly Pro 3em 400a deals with expert ratings from 8.1 to a perfect 10

March 2026 Edition

Editor's Choice

9.7

Shelly

Shelly Pro 3EM (400A) | Wi-Fi & LAN, 3-Phase Smart Energy Meter | 2-Way Consumption | Home Automation | Bluetooth Gateway | Compatible with Alexa & Google Home | No Hub Required | Solar Panels

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Editor's bottom line:

“This shelly pro 3em 400a is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Shelly Pro 3EM is a Wi-Fi-operated, DIN-mountable 3-phase energy meter with Wi-Fi and LAN connectivity. With an active energy measurement accuracy of 1%, it allows precise monitoring of energy consumption for home appliances, electric circuits, and office equipment individually. The package includes three 120A Current Transformers for enhanced measurement. Additionally, it functions as a Bluetooth gateway, expanding connectivity for smart home automation.
Monitor your home, office, or factory and avoid additional expenses or drops in voltage that can damage your appliances and devices. Shelly Pro 3EM can calculate 2-way consumption: produced and used energy for each of the three phases | Industry grade security- the device can have direct connections to your cloud infrastructure, reducing the cost of deploying complex networks and VPNs.
Solar Panels Monitoring and Control - Keep track of how much energy your solar panels or wind turbines are generating and save effortlessly. Access real-time information about the efficiency of your system and historical data for up to 60 days.
Shelly Customer Service - Shelly is one of the fastest-growing IoT brands in the world with devices, providing solutions for the automation of private homes, buildings and businesses. We provide our customers with professional support and a 5 years device warranty.
Shelly Smart Control App will help you control your Shelly devices remotely and will send notifications for all automated events in your home. You can easily configure devices and manage their settings individually, or you can create personalized scenes by combining Shelly devices to trigger certain actions in your home automation.

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Picked by 397 people today

9.5

Shelly

Shelly Pro 3EM 3CT 63 | Wi-Fi & LAN 3-Phase Professional Smart Energy Meter | DIN Rail | Home Automation | Compatible with Alexa & Google Home | iOS Android App | No Hub | Photovoltaic Ready

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Main Highlights

The Shelly Pro 3EM 3CT 63 is a next-gen DIN rail-mountable energy meter for single or three-phase installations, featuring a 63A, 3-phase current transformer for non-contact measurements. It supports 4-quadrant measurement, optical pulse indication of energy usage, and is photovoltaic-ready. *It doesn't have a built-in relay; contactor control requires a Shelly Pro Addon attached to the device.
Professional Smart Meter - Shelly Pro 3EM-3CT63 is a professional smart meter that reports accumulated energy, voltage, current, active, and apparent power per phase in real time. It stores data for up to 60 days in 1-minute intervals and includes a real-time clock to maintain accurate time if the SNTP server connection is lost.
Ideal for business energy measurement - In commercial buildings, it helps monitor energy usage across floors or departments allowing accurate cost allocation and identification of energy wastage. In manufacturing plants it tracks energy consumption of heavy machinery, optimizing usage to reduce operational costs. For store owners it monitors energy usage of systems like lighting, HVAC § refrigeration, helping to identify inefficiencies § reduce energy bills while supporting sustainable practices
Shelly Customer Service - Shelly is one of the fastest-growing Smart Home brands in the world with devices, providing solutions for the automation of private homes, buildings and businesses. We provide our customers with professional support and a 5 years device warranty.
Shelly Smart Control App will help you control your Shelly devices remotely and will send notifications for all automated events in your home. You can easily configure devices and manage their settings individually, or you can create personalized scenes by combining Shelly devices to trigger certain actions in your home automation.

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9.5

Shelly

Shelly Pro 4PM | Wi-Fi & LAN, 4-Channel Smart Relay with Power Metering | Home Automation | Compatible with Alexa & Google Home | iOS Android App| Remote Appliances Control and Monitoring

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Main Highlights

Shelly Pro 4PM is a single-phase, four-channel DIN rail relay with LAN and Wi-Fi connectivity, supporting up to 16A per channel and a total device capacity of 40A. Equipped with four integrated precision power meters, it enables independent monitoring and control of energy consumption for each channel. Additionally, it functions as a Bluetooth gateway, enhancing smart home connectivity and automation.
Shelly Pro 4PM can make your halls, garages, and storage rooms energy efficient using the built-in scheduling and scripting functionalities. Connect Shelly Pro 4PM to your appliances and use Shelly 3EM's real-time information on how much energy has been generated from your solar panels and wind turbines and how much is it consumed from your other devices.
Shelly Pro Series - Enhanced with temperature, overpower, and overvoltage load protection, Shelly Pro Series is designed to be installed inside the breaker box (DIN). Allowing full smart automation with no additional cables or wiring, Shelly Pro line is perfect for homes, offices, stores, businesses, and manufacturing facilities, as well as new buildings.
Shelly Customer Service - Shelly is one of the fastest-growing Smart Home brands in the world with devices, providing solutions for the automation of private homes, buildings and businesses. We provide our customers with professional support and a 5 years device warranty.
Shelly Smart Control App will help you control your Shelly devices remotely and will send notifications for all automated events in your home. You can easily configure devices and manage their settings individually, or you can create personalized scenes by combining Shelly devices to trigger certain actions in your home automation.

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9.2

Shelly

Shelly Pro 3 | Wi-Fi & LAN, 3-Channel Smart Relay | Home & Facility Automation | Compatible with Alexa & Google Home | iOS Android App | Lights Automation | Controller for Motorized Valve

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Main Highlights

Shelly Pro 3 is a three-phase, three-channel DIN rail relay with LAN and Wi-Fi connectivity, supporting up to 48A. It is designed for professional lighting and appliance automation in both residential and commercial applications. Featuring potential-free (dry contact) outputs, it offers exceptional flexibility in voltage support and various use cases. Additionally, it functions as a Bluetooth gateway, enhancing smart home integration and connectivity.
Use Shelly Pro 3 to control the motorized valves in your water distribution box and control heating, cooling, or any other motorized valve in your facility. In addition, it can control three separate light circuits and give you full control over common spaces such as halls, garages, and storage rooms, which usually have their lights constantly switched on.
Shelly Pro Series - Enhanced with temperature, overpower, and overvoltage load protection, Shelly Pro Series is designed to be installed inside the breaker box (DIN). Allowing full smart automation with no additional cables or wiring, Shelly Pro line is perfect for homes, offices, stores, businesses, and manufacturing facilities, as well as new buildings.
Shelly Customer Service - Shelly is one of the fastest-growing Smart Home brands in the world with devices, providing solutions for the automation of private homes, buildings and businesses. We provide our customers with professional support and a 5 years device warranty.
Shelly Smart Control App will help you control your Shelly devices remotely and will send notifications for all automated events in your home. You can easily configure devices and manage their settings individually, or you can create personalized scenes by combining Shelly devices to trigger certain actions in your home automation.

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9.0

Shelly

Shelly Pro Dimmer 2PM | Wi-Fi & LAN 2-Channel Smart Dimmer with Power Metering | Home Automation | Bluetooth Gateway | DIN Rail | Compatible with Alexa & Google Home | Dimmable Lights

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Main Highlights

The Shelly Pro Dimmer 2PM is a professional light dimmer with two channels, power measurement, and free data storage. It installs on a DIN rail and controls, dims, and measures power for halogen lights, dimmable LEDs, and ferromagnetic transformers (110-240V). It features automatic dimming calibration and includes switch/button input mode, smart scenes, no hub required, and works as a Wi-Fi range extender and BLE gateway.
Brightness that suits your activities - Shelly Pro Dimmer 2PM gives you fine-tuned control over your lighting. Set minimum and maximum brightness levels to match your preferences and your bulbs' capabilities. Additionally, pre-set preferred lighting scenes for different activities and moods.
Optimized energy consumption - The Shelly Pro Dimmer 2PM is ideal for dimming and power metering in homes, hotels, and offices. Designed for DIN rail integration, it allows precise light control and monitoring across rooms, helping you plan expenses and optimize energy use for greater efficiency and cost-effectiveness.
Shelly Customer Service - Shelly is one of the fastest-growing Smart Home brands in the world with devices, providing solutions for the automation of private homes, buildings and businesses. We provide our customers with professional support and a 5 years device warranty.
Shelly Smart Control App will help you control your Shelly devices remotely and will send notifications for all automated events in your home. You can easily configure devices and manage their settings individually, or you can create personalized scenes by combining Shelly devices to trigger certain actions in your home automation.

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8.8

Shelly

Shelly Pro 1PM | Wi-Fi & LAN, 1-Channel Smart Relay Switch with Power Metering | Home & Facility Automation | Compatible with Alexa & Google | iOS Android App | Remote Appliances Control

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Main Highlights

Shelly Pro 1PM is a single-phase, two-channel relay with LAN and Wi-Fi connectivity, supporting up to 16A per channel and a total device capacity of 25A. Equipped with two integrated precision power meters, it enables real-time monitoring and independent control of each channels energy consumption. Additionally, it functions as a Bluetooth gateway, enhancing smart home automation and connectivity.
Control and monitor your appliances efficiently with Shelly. Predict monthly costs and manage spending effectively! Automate restaurant appliances and monitor energy usage remotely. Receive alerts if any appliance is left running outside of business hours, preventing unnecessary electricity waste. Set smart schedules to power off unused appliances overnight and resume before opening hours.
Shelly Pro Series - Enhanced with temperature, overpower, and overvoltage load protection, Shelly Pro Series is designed to be installed inside the breaker box (DIN). Allowing full smart automation with no additional cables or wiring, Shelly Pro line is perfect for homes, offices, stores, businesses, and manufacturing facilities, as well as new buildings.
Shelly Customer Service - Shelly is one of the fastest-growing IoT brands in the world with devices, providing solutions for the automation of private homes, buildings and businesses. We provide our customers with professional support and a 5 years device warranty.
Shelly Smart Control App will help you control your Shelly devices remotely and will send notifications for all automated events in your home. You can easily configure devices and manage their settings individually, or you can create personalized scenes by combining Shelly devices to trigger certain actions in your home automation.

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8.6

Shelly

Shelly Wave Pro 3 US LR | Z-Wave Long Range 3-Channel Smart Relay Switch with Dry Contacts| DIN-Rail | Home Automation | High Compatibility | Easy Installation | iOS Android App

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Main Highlights

Shelly Wave Pro 3 US LR is a professional 3-channel DIN rail Z-Wave Long Range Smart Switch with Power Metering. Ideal for both home and facility automation, it offers remote control and mounts easily inside a breaker box. It also includes advanced safety features for reliable operation. *A gateway (smart hub) is not included. A gateway (smart hub) is required to configure the device.
Compatible with any Z-Wave gateway - ZWLR delivers extended range with communication distances up to 1.5 miles at full power, and supports scalable networks with up to 4,000 devices - far surpassing the 232-device limit of earlier Z-Wave versions. Works on 912MHz (ZWLR) and 908.4MHz (Z-Wave Plus)
Optimize your energy usage - Automate socket power delivery and implement smart scheduling with Shelly Wave Pro 3 US LR to deactivate non-essential, high-consumption appliances from 7:00 PM to 7:00 AM on weekdays and throughout weekends. This will halve energy consumption and significantly reduce monthly energy costs.
Dynamic light control for efficiency - With Shelly Wave Pro 3 US LR, automate office lighting using custom schedules and timers. Turn off lights after work hours and activate only where needed in the morning, ensuring energy savings and efficiency.
Shelly Customer Service - Shelly is one of the fastest-growing Smart Home brands in the world with devices, providing solutions for the automation of private homes, buildings and businesses. We provide our customers with professional support and a 5 years device warranty.

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8.3

Shelly

Shelly Plus i4 DC

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Main Highlights

- : Manage and activate up to 16 actions or scenes with four digital inputs, enhancing your smart home automation (5-24 V DC)
: Works with Shelly, Philips Hue, and other smart bulbs brands
- + : Uses 2.4 GHz Wi-Fi for seamless smart home control; Bluetooth included for simplified connection
& : Set up timers and personalized schedules per channel or create scenes for full-home automation
& : Control from anywhere using the Shelly Smart Control app or voice assistants like Alexa, Google Home, or SmartThings -

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8.1

Shelly

Shelly Pro 3EM Switch Add-On | Add-On Pro 3EM Dry Contacts DIN Rail Mounting | Home Automation | iOS Android app | No Hub Required | Solar Panels | Wind Turbines

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Main Highlights

The Shelly Pro 3EM Switch Add-On is an add-on for Shelly Pro 3EM. An electrically isolated switch that extends the functions of your Shelly Pro 3EM device. With this add-on, you can easily control contactors and other electrical devices, giving you more flexibility and control over your consumption.
Load shedding - Keep track of how much energy your solar panels and wind turbines are generating and save effortlessly by controlling your consumption with the Shelly Pro 3EM add-on. Connect the Shelly Pro add-on to your devices and use Shelly Pro 3EM's real-time information on how much energy has been generated and consumed. When you need to save energy.
PV system balancing - If your PV system is producing more energy than your home is consuming, the Shelly Pro 3EM add-on can automatically activate devices to use it. For example, you can set it to turn on your water heater, electric vehicle charging station or other energy-intensive appliances.
Shelly Customer Service - Shelly is one of the fastest-growing IoT brands in the world with devices, providing solutions for the automation of private homes, buildings and businesses. We provide our customers with professional support and a 5 years device warranty.
Shelly Smart Control App will help you control your Shelly devices remotely and will send notifications for all automated events in your home. You can easily configure devices and manage their settings individually, or you can create personalized scenes by combining Shelly devices to trigger certain actions in your home automation.

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Our Best Overall Choice

Best Choice

9.7

Shelly

Shelly Pro 3EM (400A) | Wi-Fi & LAN, 3-Phase Smart Energy Meter | 2-Way Consumption | Home Automation | Bluetooth Gateway | Compatible with Alexa & Google Home | No Hub Required | Solar Panels

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Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Shelly Pro 3EM is a Wi-Fi-operated, DIN-mountable 3-phase energy meter with Wi-Fi and LAN connectivity. With an active energy measurement accuracy of 1%, it allows precise monitoring of energy consumption for home appliances, electric circuits, and office equipment individually. The package includes three 120A Current Transformers for enhanced measurement. Additionally, it functions as a Bluetooth gateway, expanding connectivity for smart home automation.
Monitor your home, office, or factory and avoid additional expenses or drops in voltage that can damage your appliances and devices. Shelly Pro 3EM can calculate 2-way consumption: produced and used energy for each of the three phases | Industry grade security- the device can have direct connections to your cloud infrastructure, reducing the cost of deploying complex networks and VPNs.
Solar Panels Monitoring and Control - Keep track of how much energy your solar panels or wind turbines are generating and save effortlessly. Access real-time information about the efficiency of your system and historical data for up to 60 days.
Shelly Customer Service - Shelly is one of the fastest-growing IoT brands in the world with devices, providing solutions for the automation of private homes, buildings and businesses. We provide our customers with professional support and a 5 years device warranty.
Shelly Smart Control App will help you control your Shelly devices remotely and will send notifications for all automated events in your home. You can easily configure devices and manage their settings individually, or you can create personalized scenes by combining Shelly devices to trigger certain actions in your home automation.

Show Price

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