• Shelly Pro 3EM 3CT63
  • Shelly Pro 3EM 3CT63
  • Shelly Pro 3EM 3CT63
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Shelly

Shelly Pro 3EM-3CT63. Smart DIN Rail 3-Phase Energy Meter with 63A CT Clamps, Wi-Fi, LAN & Bluetooth (Open Box)

Shelly Pro 3EM-3CT63. Smart DIN Rail 3-Phase Energy Meter with 63A CT Clamps, Wi-Fi, LAN & Bluetooth (Open Box)

Pro 3EM-3CT63_OB_AN

Condition: Open Box

Professionally inspected and tested by Digital Bay Tech to ensure proper operation and cosmetic condition. Final sale. No returns or exchanges.
Open Box units may include manufacturer warranty when applicable and/or a Digital Bay Tech limited replacement warranty for manufacturing defects.
See warranty details below.

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$75.50 USD
$150.99 USD $75.50 USD
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Professional Energy Monitoring Made Simple

The Shelly Pro 3EM-3CT63 is a next-generation DIN rail mount smart energy meter designed for accurate monitoring of residential, commercial, and industrial electrical systems. Featuring included 63A current transformers (CT clamps), it provides precise real-time measurements of voltage, current, active energy, and power consumption across up to three phases.

Designed for electrical panels and professional installations, the Shelly Pro 3EM-3CT63 combines Wi-Fi, LAN, and Bluetooth connectivity for reliable local and cloud-based energy management. Whether you are monitoring a home, solar installation, EV charger, office, retail space, or industrial equipment, it delivers detailed insights to help reduce energy waste and optimize efficiency.

With support for MQTT, Modbus, scripting, webhooks, and local automations, the Shelly Pro 3EM-3CT63 easily integrates into advanced smart home and building automation systems including Home Assistant, Node-RED, and custom energy dashboards.

Why Choose Shelly Pro 3EM-3CT63?

Unlike traditional energy meters, the Shelly Pro 3EM-3CT63 includes specially designed compact 63A CT clamps that simplify installation while providing highly accurate non-contact measurements.

Its professional-grade features make it ideal for:

  • Whole-home energy monitoring
  • Solar and photovoltaic systems
  • EV charger monitoring
  • Commercial energy management
  • Industrial equipment monitoring
  • Smart panel integrations
  • Load balancing and automation
  • Energy optimization projects

The built-in data logging stores up to 60 days of historical data directly on the device with 1-minute resolution, allowing detailed analysis even if internet connectivity is interrupted.

Key Features

  • Includes 3 integrated 63A current transformers (CT clamps)
  • Supports single-phase and 3-phase electrical systems
  • DIN rail mount design for electrical panels
  • Wi-Fi, LAN, and Bluetooth connectivity
  • Highly accurate Class B active energy measurement
  • Real-time monitoring of voltage, current, power, and energy consumption
  • 4-quadrant measurement for imported and exported energy
  • Photovoltaic (solar) ready
  • Stores up to 60 days of historical data locally
  • MQTT, Modbus, HTTP, WebSocket, and scripting support
  • Compatible with Home Assistant and advanced automation platforms
  • Real-time clock for accurate timestamp logging
  • Optical pulse indication for energy usage
  • Supports external contactor control with Shelly Add-on
  • Designed for professional and industrial applications
View full details

Common Use Cases

  • Whole-Home Energy Monitoring

    Track the energy usage of your entire home across all phases in real time. Identify which appliances or systems consume the most power and reduce unnecessary energy usage.

  • Solar Power Monitoring

    Monitor solar production, imported energy from the grid, and exported excess energy for better photovoltaic system management and energy optimization.

  • EV Charger Energy Tracking

    Measure the real-time power consumption of EV chargers to better understand charging costs and optimize energy usage during peak and off-peak hours.

  • Commercial Building Energy Management

    Monitor energy consumption across offices, retail spaces, or multiple departments to identify inefficiencies and reduce operational costs.

  • Industrial Equipment Monitoring

    Track heavy machinery and industrial loads across multiple phases for predictive maintenance and improved operational efficiency.

  • Smart Panel Automation

    Combine Shelly Pro 3EM-3CT63 with automation platforms to trigger actions based on energy usage, load conditions, or power thresholds.

Functionalities

  • LAN, Wi-Fi, and Bluetooth connectivity

    LAN connection for high security and reliability. Simultaneous Wi-Fi and LAN usage, as backup when needed.

  • Accuracy class B (active energy)

    Shelly Pro EM-50 has a measurement accuracy of 1%.

  • MODBUS support

    Allows for easy and fast deployment in existing industrial installations.

  • 4-quadrant measurement

    Measure capacitive and inductive load types of active imported and exported energies.

  • Energy measurement

    Monitors mono-phase electrical systems with up to 3 points simultaneously. Fast notifications and at least 60 days of 1-minute records storage.

  • Scripting functionalities

    Shelly Pro 3PM fully supports mjS scripting, allowing you to create further features and functionalities.

Frequently Asked Questions

What is the difference between the Shelly Pro 3EM and the Pro 3EM-3CT63?

The Shelly Pro 3EM-3CT63 includes compact 63A current transformers specifically designed for simpler installation and accurate monitoring up to 63 amps per phase.

Can the Shelly Pro 3EM-3CT63 monitor solar systems?

Yes. It is photovoltaic ready and can monitor solar production, grid consumption, and exported energy.

Does this device work with Home Assistant?

Yes. It supports MQTT, Modbus, HTTP, WebSocket, and local integrations compatible with Home Assistant and other automation platforms.

Can it monitor both single-phase and three-phase systems?

Yes. The device supports both single-phase and three-phase electrical installations.

Does the Shelly Pro 3EM-3CT63 include relays to control loads?

No. This device is designed for energy monitoring only. Load control can be added using compatible Shelly Add-ons and contactors.

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 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 compatible platforms

Warranty

New Products

  • USA Pro Market Manufacturer Warranty: Lifetime manufacturer warranty (only if installed by a professional within USA) when purchased at Digital Bay Tech.

  • Retail Standard Manufacturer Warranty (included in purchase price): 2, 3 or 5 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.
  • Gen 1: 2 years.
  • Plus, Gen3, Gen4, Wave: 3 years.
  • Pro Line: 5 years.

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.

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