4P ZigBee Smart MCB Building Electrical Distribution

LRR6 4P ZigBee Smart MCB is a high-performance IoT-enabled intelligent circuit breaker, exclusively developed for building electrical contractors, industrial facility managers, and large-scale property operators needing robust, integrated power distribution and smart energy management. This 4P three-phase device leverages wireless ZigBee communication, alongside multiple connectivity options, to deliver remote on/off control, local mode switching, programmable timed operations, and advanced fault protection for heavy-duty electrical systems. With integrated manual and automatic control, and industry-leading breaking performance, it is the ideal upgrade for traditional distribution systems in commercial buildings, industrial plants, and large public infrastructure, supporting seamless integration with existing building management systems.

Core Features & Project-Focused Advantages

Multi-Protocol Communication for Flexible System Integration

Unlike single-communication smart breakers, this 4P ZigBee smart MCB supports multiple connectivity protocols including Tuya ZigBee, Tuya WIFI, RS485, and dry contact inputs, enabling seamless integration with third-party building automation systems, industrial control platforms, and centralized energy management systems. It also supports wireless kinetic switch connectivity, delivering maximum flexibility for complex project requirements.

High-Reliability Breaking & Ultra-Fast Fault Protection

Engineered for heavy-duty three-phase distribution, this building electrical distribution MCB delivers a 6KA breaking capacity, with a tripping time of ≤0.1S and short circuit response time of ≤0.04S. It provides instant, reliable protection against circuit faults, minimizing the risk of equipment damage and electrical fires for critical building and industrial systems.

Customizable Auto-Reclosing Function for Uninterrupted Operations

A standout feature for mission-critical projects, this auto-reclosing smart circuit breaker supports fully configurable automatic reclosing, with customizable time settings to match project-specific requirements. This function reduces on-site maintenance trips and minimizes downtime for remote or hard-to-access sites, a critical benefit for industrial and infrastructure operators.

Integrated Manual & Automatic Control for Dual Management

The device combines intuitive local manual control with fully automated remote operation, allowing on-site electrical teams to take manual control during maintenance, while enabling centralized remote management for daily operations. It supports DIN-rail mounting for rapid installation into standard distribution cabinets, ideal for both new construction and retrofit projects.

Fully Configurable Protection Thresholds for Tailored Project Performance

This three-phase smart circuit breaker offers fully customizable protection parameters, including overvoltage protection, to adapt to the unique load requirements of different commercial, industrial, and public facility projects, ensuring optimal protection for every application.

Full Technical Specifications

Target Industries & Application Scenarios

High-Rise Commercial Building Electrical Distribution

Perfect for office towers, shopping malls, hotels, and hospitals, delivering centralized control of HVAC, lighting, and power distribution systems, with zoned energy management and emergency remote power shutoff to enhance building safety and reduce operational costs.

Industrial Plant & Manufacturing Facility Power Control

Ideal for factories and production facilities, providing reliable protection for three-phase industrial equipment, sequential start/stop control to avoid inrush current surges, and automated timed operation for production lines, reducing downtime and improving operational efficiency.

Large-Scale Public Infrastructure Projects

Suitable for transportation hubs, charging stations, data centers, and water treatment facilities, with remote monitoring, fault alarm functionality, and auto-reclosing to ensure uninterrupted power for critical public infrastructure, reducing maintenance costs and improving reliability.

Multi-Unit Residential Complex Centralized Management

Designed for large apartment communities and residential developments, enabling property managers to implement centralized power distribution control, remote fault monitoring, and energy usage tracking for common areas and individual units, enhancing safety and reducing management workload.

Product Operate Guide

Download and register an account on the Tuya APP, with support for multi-device batch management across large-scale building projects.

Ensure your Tuya ZigBee gateway is online and connected to your local network, as required for ZigBee device pairing.

Complete wiring per the standard diagram: connect the upper terminals to the three-phase power supply and lower terminals to the load, then power on the device and wait for the indicator light to activate.

10 seconds after power-on, press and hold the pairing button until the indicator light flashes, confirming the device has entered pairing mode.

In the Tuya APP, click the "+" icon in the top right corner, select the ZigBee gateway device, and initiate the device search to detect the smart MCB.

Wait for the device pairing process to complete, then follow the in-app prompts to configure basic parameters.

Assign the device to the correct building zone and set a standardized name for centralized management, then click "Finish" to complete setup.

FAQ

Can this 4P ZigBee smart MCB be integrated with our existing third-party building management system?

Yes. The device supports RS485 communication and multiple protocol compatibility, enabling seamless integration with most mainstream building automation and energy management systems. Our technical team can also provide custom integration support for complex project requirements.

Is the auto-reclosing function customizable for different project needs?

Absolutely. The auto-reclosing feature supports fully configurable reclosing times and trigger conditions, allowing you to tailor the function to match the specific requirements of your building, industrial, or infrastructure project, ensuring optimal reliability and safety.

What is the maximum installation altitude for this smart MCB?

The device is designed for installation at altitudes not exceeding 3000m above sea level, making it suitable for most commercial, industrial, and infrastructure projects across global markets.