LMB3 WiFi Smart Circuit Breaker 63A, Remote Control & Energy Monitoring

LMB3 WiFi Smart Circuit Breaker 63A, Remote Control & Energy Monitoring

This WiFi smart circuit breaker is a DIN rail mountable smart switch that combines traditional circuit protection with IoT connectivity. Rated at 63A (90-300V AC), it supports remote ON/OFF control via smartphone app, real-time energy monitoring, and built-in overvoltage/overcurrent/overtemperature protection. Compatible with Tuya Smart, it is ideal for smart home automation, remote power management, and commercial building energy monitoring.

This WiFi smart circuit breaker is a DIN rail mountable smart switch that combines traditional circuit protection with IoT connectivity. Rated at 63A (90-300V AC), it supports remote ON/OFF control via smartphone app, real-time energy monitoring, and built-in overvoltage/overcurrent/overtemperature protection. Compatible with Tuya Smart, it is ideal for smart home automation, remote power management, and commercial building energy monitoring.

1. Product Overview

The WiFi Smart Circuit Breaker is an all-in-one intelligent power control device designed for modern smart homes and commercial applications. Combining a standard circuit breaker with WiFi connectivity, this DIN rail mountable device enables remote ON/OFF control, real-time energy consumption monitoring, and automatic fault protection via a smartphone app.
Rated for 63A at 90-300V AC, the breaker features built-in overvoltage, overcurrent, and overtemperature protection to prevent equipment damage and fire hazards. Compatible with the Tuya Smart ecosystem, it supports voice control via Alexa/Google Assistant and allows users to set schedules, timers, and automation rules. With its compact design and easy installation, this smart breaker is the ideal solution for remote power management, energy saving, and intelligent home automation.

2. Key Features

  • WiFi Remote Control: Control the circuit ON/OFF anytime, anywhere via smartphone app.
  • Real-Time Energy Monitoring: Track power consumption, voltage, current, and power factor in real time.
  • Comprehensive Protection: Built-in overvoltage, undervoltage, overcurrent, overload, and overtemperature protection.
  • Smart Scheduling & Timers: Set auto-on/off schedules, countdown timers, and scene modes for automation.
  • Voice Control Compatibility: Works with Alexa, Google Assistant, and other smart voice assistants for hands-free control.
  • DIN Rail Mounting: Standard 35mm DIN rail design for easy installation in distribution panels.
  • LED Status Indicator: Clear signal light shows WiFi connection and device status.
  • Wide Voltage Range: Supports 90-300V AC, 50/60Hz, suitable for global markets.
  • Compact Design: 1P/1P+N form factor saves panel space, ideal for both residential and commercial use.

3. Technical Specifications

Parameter Specification
Product Type WiFi Smart Circuit Breaker
Rated Voltage 90-300V AC, 50/60Hz
Rated Current 63A
Communication WiFi 2.4GHz
App Compatibility Tuya Smart / Smart Life
Protection Functions Overvoltage, undervoltage, overcurrent, overload, overtemperature
Mounting Type 35mm DIN Rail
Indicator WiFi signal light, power status LED
Housing Material Flame-retardant engineering plastic (UL94 V-0)
Operating Temperature -10°C ~ +60°C
Compliance CE certified

4. Working Principle

The WiFi smart circuit breaker operates as both a protective device and an IoT-enabled control unit:
  1. Normal Operation: The breaker remains closed, supplying power to the load while continuously monitoring voltage, current, and temperature.
  2. Remote Control: Users can send commands via the smartphone app to turn the breaker ON/OFF, with the WiFi module receiving the signal and triggering the mechanical switch.
  3. Energy Monitoring: Built-in sensors measure real-time power consumption and send data to the app for tracking and analysis.
  4. Fault Protection: When overvoltage, overcurrent, or overtemperature conditions are detected, the breaker automatically trips to disconnect the load and prevent damage.

5. Applications

  • Smart Home Automation: Lighting control, home appliances, and air conditioning systems.
  • Commercial Buildings: Office power management, retail store equipment control, and energy monitoring.
  • Industrial Equipment: Remote control of machinery, pumps, and other non-critical loads.
  • Agricultural & Remote Systems: Farm irrigation pumps, greenhouse lighting, and remote monitoring equipment.
  • Rental & Vacation Properties: Remote power control and energy management for vacation homes and apartments.

6. Installation & Operation Instructions

  1. Mounting: Snap the smart breaker onto a standard 35mm DIN rail inside the distribution panel.
  2. Wiring: Connect the power line (L) and neutral (N) to the breaker’s input terminals, and the load line to the output terminals.
  3. WiFi Configuration: Download the Tuya Smart app, connect the breaker to your 2.4GHz WiFi network, and follow the pairing instructions.
  4. Operation: Use the app to control the breaker, view energy data, set schedules, and configure protection thresholds.
  5. Safety Notes: Always disconnect power before installation or maintenance. The breaker is for indoor use only.

7. Frequently Asked Questions (FAQ)

Q1: Can this breaker be controlled without WiFi?

Yes, the breaker has a physical button for manual control, and it will continue to provide basic circuit protection even if WiFi is disconnected.

Q2: What is the maximum current rating?

The breaker is rated for 63A continuous current, suitable for most household and light commercial applications.

Q3: Does it work with 5GHz WiFi?

No, it only supports 2.4GHz WiFi networks, which are more common in smart home devices and offer better range and compatibility.

Q4: Can I monitor energy consumption with this breaker?

Yes, it provides real-time monitoring of voltage, current, power, and total energy usage, with historical data available in the app.

Q5: What happens if the breaker trips due to overcurrent?

It will automatically disconnect the load, send an alert to your smartphone, and log the event in the app. You can remotely reset it once the fault is resolved.

Q6: Is this breaker compatible with Alexa/Google Assistant?

Yes, it works with both Alexa and Google Assistant for voice control, allowing you to turn the circuit ON/OFF with simple voice commands.

8. Technical Documents & Support

Download the full datasheet for detailed specifications, wiring diagrams, and trip coordination guidelines.
Contact our engineering team for custom configurations, communication module integration, or OEM solutions for large-scale projects.
Request a quote with your project details for bulk pricing, lead times, and compliance certifications.

1. Product Overview

The WiFi Smart Circuit Breaker is an all-in-one intelligent power control device designed for modern smart homes and commercial applications. Combining a standard circuit breaker with WiFi connectivity, this DIN rail mountable device enables remote ON/OFF control, real-time energy consumption monitoring, and automatic fault protection via a smartphone app.
Rated for 63A at 90-300V AC, the breaker features built-in overvoltage, overcurrent, and overtemperature protection to prevent equipment damage and fire hazards. Compatible with the Tuya Smart ecosystem, it supports voice control via Alexa/Google Assistant and allows users to set schedules, timers, and automation rules. With its compact design and easy installation, this smart breaker is the ideal solution for remote power management, energy saving, and intelligent home automation.

2. Key Features

  • WiFi Remote Control: Control the circuit ON/OFF anytime, anywhere via smartphone app.
  • Real-Time Energy Monitoring: Track power consumption, voltage, current, and power factor in real time.
  • Comprehensive Protection: Built-in overvoltage, undervoltage, overcurrent, overload, and overtemperature protection.
  • Smart Scheduling & Timers: Set auto-on/off schedules, countdown timers, and scene modes for automation.
  • Voice Control Compatibility: Works with Alexa, Google Assistant, and other smart voice assistants for hands-free control.
  • DIN Rail Mounting: Standard 35mm DIN rail design for easy installation in distribution panels.
  • LED Status Indicator: Clear signal light shows WiFi connection and device status.
  • Wide Voltage Range: Supports 90-300V AC, 50/60Hz, suitable for global markets.
  • Compact Design: 1P/1P+N form factor saves panel space, ideal for both residential and commercial use.

3. Technical Specifications

Parameter Specification
Product Type WiFi Smart Circuit Breaker
Rated Voltage 90-300V AC, 50/60Hz
Rated Current 63A
Communication WiFi 2.4GHz
App Compatibility Tuya Smart / Smart Life
Protection Functions Overvoltage, undervoltage, overcurrent, overload, overtemperature
Mounting Type 35mm DIN Rail
Indicator WiFi signal light, power status LED
Housing Material Flame-retardant engineering plastic (UL94 V-0)
Operating Temperature -10°C ~ +60°C
Compliance CE certified

4. Working Principle

The WiFi smart circuit breaker operates as both a protective device and an IoT-enabled control unit:
  1. Normal Operation: The breaker remains closed, supplying power to the load while continuously monitoring voltage, current, and temperature.
  2. Remote Control: Users can send commands via the smartphone app to turn the breaker ON/OFF, with the WiFi module receiving the signal and triggering the mechanical switch.
  3. Energy Monitoring: Built-in sensors measure real-time power consumption and send data to the app for tracking and analysis.
  4. Fault Protection: When overvoltage, overcurrent, or overtemperature conditions are detected, the breaker automatically trips to disconnect the load and prevent damage.

5. Applications

  • Smart Home Automation: Lighting control, home appliances, and air conditioning systems.
  • Commercial Buildings: Office power management, retail store equipment control, and energy monitoring.
  • Industrial Equipment: Remote control of machinery, pumps, and other non-critical loads.
  • Agricultural & Remote Systems: Farm irrigation pumps, greenhouse lighting, and remote monitoring equipment.
  • Rental & Vacation Properties: Remote power control and energy management for vacation homes and apartments.

6. Installation & Operation Instructions

  1. Mounting: Snap the smart breaker onto a standard 35mm DIN rail inside the distribution panel.
  2. Wiring: Connect the power line (L) and neutral (N) to the breaker’s input terminals, and the load line to the output terminals.
  3. WiFi Configuration: Download the Tuya Smart app, connect the breaker to your 2.4GHz WiFi network, and follow the pairing instructions.
  4. Operation: Use the app to control the breaker, view energy data, set schedules, and configure protection thresholds.
  5. Safety Notes: Always disconnect power before installation or maintenance. The breaker is for indoor use only.

7. Frequently Asked Questions (FAQ)

Q1: Can this breaker be controlled without WiFi?

Yes, the breaker has a physical button for manual control, and it will continue to provide basic circuit protection even if WiFi is disconnected.

Q2: What is the maximum current rating?

The breaker is rated for 63A continuous current, suitable for most household and light commercial applications.

Q3: Does it work with 5GHz WiFi?

No, it only supports 2.4GHz WiFi networks, which are more common in smart home devices and offer better range and compatibility.

Q4: Can I monitor energy consumption with this breaker?

Yes, it provides real-time monitoring of voltage, current, power, and total energy usage, with historical data available in the app.

Q5: What happens if the breaker trips due to overcurrent?

It will automatically disconnect the load, send an alert to your smartphone, and log the event in the app. You can remotely reset it once the fault is resolved.

Q6: Is this breaker compatible with Alexa/Google Assistant?

Yes, it works with both Alexa and Google Assistant for voice control, allowing you to turn the circuit ON/OFF with simple voice commands.

8. Technical Documents & Support

Download the full datasheet for detailed specifications, wiring diagrams, and trip coordination guidelines.
Contact our engineering team for custom configurations, communication module integration, or OEM solutions for large-scale projects.
Request a quote with your project details for bulk pricing, lead times, and compliance certifications.

Data Download

LVMA low voltage selection manual

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