Skip to product information
1 of 10

Shelly

Shelly Pro 3EM-400. Smart Din Rail 3-Phase Energy Meter with 3 CT 400 Amp. Wi-Fi, LAN, and Bluetooth connection

Shelly Pro 3EM-400. Smart Din Rail 3-Phase Energy Meter with 3 CT 400 Amp. Wi-Fi, LAN, and Bluetooth connection

SKU:Pro 3EM-400

Ask for Dealer Price

Regular price $229.00 USD
Regular price $229.00 USD Sale price $229.00 USD
Sale Sold out
Shipping calculated at checkout.
Retail: Get Free Shipping using code FREESHIP at checkout on orders from USD 75 (for US Continental, exclusions applies*).
Shipping to Canada? Write us for a customs estimation.

(*)See terms & conditions

Need more quantity? We have it! Contact us and we will get it for you

100% Secure Payments

Introducing the Shelly Pro 3EM-400: The Ultimate Three-Phase Energy Meter for professional integrators

Unlock the power of precise energy monitoring with the Shelly Pro 3EM-400, a cutting-edge DIN rail mountable energy meter. With its enhanced gen2 firmware flexibility and LAN connectivity, this device offers professional integrators and home owners an array of options to deliver top-notch solutions.

Real-Time Insights for Optimal Efficiency
The Shelly Pro 3EM-400 goes beyond traditional energy meters by providing real-time measurements of accumulated energy, as well as instantaneous voltage, current, and power factor per phase. Stay one step ahead with accurate and up-to-date data, enabling you to optimize energy usage and make informed decisions.

Unparalleled Accuracy and Reliability
With 4 quadrant measurement and adherence to Accuracy Class B active energy standards (in compliance with IEC 62053-21 based on manufacturer testing), the Shelly Pro 3EM-400 ensures precise and trustworthy readings. Say goodbye to guesswork and embrace the confidence that comes with highly accurate energy monitoring.

Tailored for Your Needs
The Shelly Pro 3EM-400 is designed to adapt to various setups, including photovoltaic systems. Seamlessly integrate renewable energy solutions into your projects and harness the full potential of sustainable power.

Advanced Features for Maximum Efficiency
Detect phase sequence errors (*1), benefit from optical pulse indication of energy usage, and experience outstanding measurement accuracy of up to 1%. Additionally, the device stores data in non-volatile memory, allowing you to access historical information for up to 60 days in convenient 1-minute intervals.

Complete Package for Easy Installation
To ensure a hassle-free setup, the Shelly Pro 3EM-400 package includes three (3x) 400A Current Transformers. Get everything you need in one go, saving time and effort during installation.

Choose the Shelly Pro 3EM-400 for unparalleled energy monitoring capabilities, achieve maximum efficiency and cost savings.

Features

  • 4 Quadrant measurement
  • DIN rail mounting
  • Multiple connection types
  • Current transformer connection
  • Phase sequence error detection* (option)
  • Channel-to-channel calibration**
  • No load threshold***
  • Optical pulse indication of energy usage
  • Real-time clock
  • Data logs
  • Accuracy Class B (IEC 62053-21)
  • Photovoltaic ready

Notes:
* The Device has phase sequence error detection circuits. This detection works on phase voltages and considers only the zero crossings. The regular succession of these zero-crossing events is Phase A followed by Phase B followed by Phase C. If the sequence of zero-crossing events is, instead, Phase A followed by Phase C followed by Phase B, then a phase_sequence error is reported when the Phase sequence error detection option is enabled.
** At least 5000 W load is required for each channel.
*** In case the total load for the three channels drops below 30 VA per channel the measured power level will be displayed, but no consumed energy will be accumulated to the energy statistics and a No load threshold notification will be displayed in the Device web interface and the mobile application.

⚠NOTICE! The Device does not have a built-in relay. Contactor control is provided using a Shelly Pro Addon attached to the Shelly Pro 3EM.
View full details

No hub required, Universally compatible

Shelly Products can be controlled locally, directly and without a hub through your smartphone/table with Shelly App - no hub or other equipment needed. Enable cloud feature and get remote control from anywhere. At the same time, you can integrate Shelly directly with virtually every smart home hub, voice assistant, open source platform, or premium control system.

Shelly App
Shelly compatible platforms Shelly compatible platforms Shelly compatible platforms
Shelly compatible platforms Shelly compatible platforms Shelly compatible platforms Shelly compatible platforms Shelly compatible platforms Shelly compatible platforms
Shelly compatible platforms Shelly compatible platforms Shelly compatible platforms Shelly compatible platforms Shelly compatible platforms Shelly compatible platforms

No hub required, Universally compatible

Shelly Products can be controlled locally, directly and without a hub through your smartphone/table with Shelly App - no hub or other equipment needed. Enable cloud feature and get remote control from anywhere. At the same time, you can integrate Shelly directly with virtually every smart home hub, voice assistant, open source platform, or premium control system.

Shelly App
Shelly compatible platforms
Shelly compatible platforms
Shelly compatible platforms
Shelly compatible platforms Shelly compatible platforms
Shelly compatible platforms Shelly compatible platforms
Shelly compatible platforms Shelly compatible platforms
Shelly compatible platforms Shelly compatible platforms
Shelly compatible platforms Shelly compatible platforms
Shelly compatible platforms Shelly compatible platforms

Shelly Pro 3EM-400 Wiring Diagram

Shelly Pro 3EM-400 Wiring Diagram
Shelly Pro 3EM-400 Wiring Diagram Legend
Specifications

Physical
Size (HxWxD):94x19x69 ±0.5 mm / 3.70x0.75x2.71 ±0.02 in
Weight:63 ±1 g / 2.22 ±0.05 oz
Mounting:DIN rail
Screw terminals max torque:0.4 Nm / 4.43 lbin
Conductor cross section:0.5 to 2.5 mm² / 20 to 14 AWG (solid, stranded and bootlace lugs)
Conductor stripped length:6 to 7 mm / 0.24 to 0.28 in
Shell material:Plastic
Color:White
Environmental
Ambient temperature:-20 °C to 40 °C / -5 °F to 105 °F
Humidity:30 % to 70 % RH
Max. altitude:2000 m / 6562 ft
Electrical
Power supply voltage AC:110 - 240 V, 50/60 Hz
Power supply voltage DC:N/A
Power consumption:< 3 W
Output circuits ratings
Max switching voltage AC:240 V
Max switching voltage DC:N/A
Max switching current:2 A
Sensors, meters
Internal-temperature sensor:Yes
Voltmeter (RMS):100 - 260 V
Voltmeters accuracy:±1 %
Ammeters (RMS via CT):0 - 50 A
Ammeters accuracy:±1 % (5 - 50 A), ±2 % (0 - 5 A)
Power and energy meters:Active and apparent power
Active and apparent energy
Power factor
No load threshold:30 VA per phase
Measurement data storage:At least 60 days of 1 min data resolution
Data export:CSV for PQ recorded values
JSON format export through RPC
Radio
RF band:2400 - 2495 MHz
Max. RF power:<20 dBm
Wi-Fi protocol:802.11 b/g/n
Wi-Fi Range:Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors
(Depends on local conditions)
Bluetooth Protocol:4,2
Bluetooth Range:Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors
(Depends on local conditions)
MCU
CPU:ESP32-D0WDQ6
Flash:16 MB
Firmware capabilities
Webhooks (URL actions):20 with 5 URLs per hook
Scripting:Yes
MQTT:Yes
CoAP:No

Pro EM50 / Pro 3EM Comparison

 

Shelly Pro EM-50

Shelly Pro 3EM

AC voltage per Channel

100-260 volts 50/60Hz

100-260 volts 50/60Hz

Phases Supported

Single (same phase only)

Single, Split Single, Two, Three

Number of CTs

2

3

Max Amps/Channel

50

120 or 400

Contactor Control

Yes

Requires Pro 3EM Switch Add-on

Contactor AC

100-260 volts 50/60Hz

100-260 volts 50/60Hz

Contactor DC

N/A

Up to 30 Volts

Contactor Amperage

2 amps

2 amps


Collapsible content

Warranty

  • USA Pro Market Manufacturer Warranty: Lifetime manufacturer warranty (only if installed by a professional within USA)

  • Retail Standard Manufacturer Warranty (included in purchase price): 2 years manufacturer warranty covers only the hardware (corpus, mechanics, and display, if any) and does not cover consumables (battery) and accessories insofar as these are subject to exhaustion (decrease of their useful life) depending on the intensity of their use. Device malfunctions are only covered when device is used as described conditions within user manual (max loads, proper installation, etc.). Please check refund policy for further details.

Special Notes

  • Do It Yourself: Devices are technically user-installable in many locales, nevertheless consulting a licensed electrician to install shelly components is recommended; in addition to being licensed to work with electrical devices, they are also familiar with local building codes and regulations to keep your safety.
  • Manufacturer's Safety note: Each Shelly device generates heat under load. Do not combine two or more Shelly devices stacked on top of or beside each other in a confined space. There must be a minimum distance of 0.4 inch / 1 cm between them to allow for airflow.