Shelly PRO 3EM is a new, second-generation member of Shelly's professional three-phase consumption meter, which is suitable for both private and public use and integration into other systems. It can measure the consumption of circuits, electrical devices, heating or cooling systems, or entire households, workshops, and utility plants, one three-phase circuit or three single-phase circuits.

It is capable of measuring and displaying real-time consumption and 60 days of consumption (in offline mode without WiFi), in 1-minute breakdowns, and saving its consumption data per phase.

The Shelly Pro 3EM is a Wi-Fi device with Bluetooth pairing, which is also equipped with a LAN connector. With the 1% energy measurement accuracy of the Shelly Pro 3EM, you can monitor the consumption of any household appliance, electrical circuit and office equipment separately. It saved 60 days of historical data to the device, with a resolution of 1 minute for each phase separately. In addition, script functions allow complex scenes to be executed locally.

Thanks to the LAN connection in the Shelly PRO devices, it also provides many opportunities for professional integrators to create a professional solution. It also shows the current voltage, current and power factor per phase in real time.

Product features:

- 4-quadrant measurement (for capacitive and inductive load types, measures both consumption and recharge)
- Accuracy class B (IEC 62053-21) for active energy: the measurement accuracy of the Shelly Pro 3EM is 1%.
- Supports solar systems: it can measure both consumption and recharging
- Optical pulse indication of energy consumption
- The package also contains 3 120A current transformers
- MODBUS support: Enables simple and quick installation in existing industrial facilities.
- Wi-Fi, LAN and Bluetooth connection: simultaneous use of Ethernet and Wi-Fi. MQTT, inbound and outbound WebSocket, UDP, mTLS support.
- Power monitoring: It can measure three-phase systems or up to 3 circuits in single-phase electrical systems.
- Fast notifications and storage of at least 60 days of consumption data with 1-minute resolution. Stores data in local memory.
- Script features: Shelly Pro 3PM fully supports the mjS script, allowing you to run local automations as well.
- Industry-grade security Shelly Pro 3EM supports mTLS for MQTT, HTTP and secure outgoing WebSockets. Its industrial-grade security enables direct connection to cloud infrastructure, reducing the cost of deploying complex networks and VPNs.
- Relay output for contactor control: max 10A

Wi-Fi connection:

- Like other Shelly devices, Shelly PRO 3EM has a built-in web server, so it can also operate in Access Point mode.
- The Shelly PRO 3EM can also be connected to the home / office / factory Wi-Fi network via a WiFi connection and can be accessed in this way via the free (Android, iOS) Shelly app.
- No central control or gateway is required for its operation, it connects directly to WiFi even in WiFi client or access point mode.
- Supported WiFi protocols: 802.11 b / g / n (2.4 GHz)
- It can work with a fixed IP address and DHCP.
- Shelly Pro 3EM, like other Shelly devices, can work connected to or independently of the Shelly cloud.
- They also cooperate with a home automation system on a home network: they communicate via HTTP and/or UDP protocols from mobile devices, PCs, or other devices.
- Bluetooth pairing: similar to other Shellyi devices belonging to the Plus and Pro product lines, it is easy and quick to pair with Wi-Fi using Bluetooth.

Ethernet connection:

- As a PRO series device, it can be connected not only to Wi-Fi, but also to a wired Ethernet network
- It can work with a fixed IP address and DHCP

Timing functions:

- Repetitive timings for switching the circuit on and off can be set, which is controlled by an external contactor.
- Even adjusted to the time of sunrise and sunset.

What is Shelly PRO 3EM good for?

Industrial equipment

Shelly Pro 3EM supports MODBUS for voltage, current, power and energies. You can accurately sample energy usage and instantaneous values ​​of voltage, current and power. The new firmware generation also enables individual integrations, as the device can report consumption to the infrastructure up to every 100 ms.

Two-way energy consumption monitoring

Monitor your home, office or factory and avoid additional costs or voltage drops that could damage your appliances and equipment. Shelly Pro 3EM can calculate two-way consumption: the energy produced and used in all three phases. The device can also be configured to measure three separate circuits of a single-phase electrical system. View the quality of your electrical network by active power, reactive power, voltage