Shelly PRO 3

Product Introduction

The Shelly Pro 3 is a professional-grade three-channel smart relay designed for installation inside electrical distribution boards using a DIN-rail mounting system. It allows users to control up to three independent electrical circuits remotely while integrating them into advanced smart home or building automation systems.

Each relay channel can switch loads up to 16 A, with a combined maximum capacity of 48 A, making the device suitable for controlling lighting systems, HVAC equipment, appliances, and other electrical circuits in residential or commercial environments.

The device supports Wi-Fi, Ethernet (LAN), and Bluetooth connectivity, ensuring reliable communication and flexible installation options. With built-in automation features, scripting support, and remote access through the Shelly Smart Control platform, the Shelly Pro 3 provides powerful and scalable automation directly from the breaker panel.

Key Features

Three-Channel Smart Relay Control
Control three independent electrical circuits from a single DIN-rail smart relay.

High Load Capacity
Supports up to 16 A per channel with a total device capacity of 48 A, enabling control of high-power circuits.

LAN, Wi-Fi, and Bluetooth Connectivity
Provides multiple connectivity options for stable smart home integration and device setup.

Dry Contact Outputs
Potential-free contacts allow switching of both low-voltage and high-voltage electrical systems.

Advanced Automation and Scripting
Supports scripting, schedules, webhooks, and automation triggers for complex automation scenarios.

Professional DIN-Rail Installation
Designed for installation inside distribution boards for centralized automation control.

Smart Home Integration

The Shelly Pro 3 integrates with a wide range of smart home platforms and automation systems.

Supported integrations include:

• Shelly Smart Control App
• Amazon Alexa
• Google Home
• Samsung SmartThings
• Home Assistant
• MQTT and REST API automation systems

Once connected, the device can participate in automation scenarios such as:

• Controlling multiple lighting circuits from a central panel
• Automating heating or cooling equipment
• Scheduling electrical equipment in commercial facilities
• Triggering automation scenes based on sensors or schedules

Technical Specifications

Product Type: Professional Smart Relay
Model: Shelly Pro 3
Channels: 3 independent relay outputs
Power Supply: 110–240 V AC, 50/60 Hz
Maximum Switching Current: 16 A per channel (48 A total)
Connectivity: Wi-Fi 2.4 GHz, Ethernet (LAN), Bluetooth
Relay Type: Potential-free (dry contact) outputs
Power Consumption: < 3 W
Operating Temperature: −20 °C to 40 °C
Installation: DIN-rail mounting inside electrical distribution boards

What’s in the Box

Shelly Pro 3 smart relay
Quick start guide