Tongou TOSM1-100 WiFi Smart Miniature Circuit Breaker User Manual

1. Introduction

The Tongou TOSM1-100 WiFi Smart Miniature Circuit Breaker (MCB) is an advanced electrical protection device designed for modern smart homes and industrial applications. It integrates traditional circuit protection with smart control capabilities, allowing for remote management and monitoring via the Tuya Smart Life app. This manual provides essential information for the safe installation, operation, and maintenance of your smart circuit breaker.

2. Safety Information

WARNING: Electrical shock hazard. Installation and maintenance should only be performed by qualified electricians or personnel with appropriate electrical knowledge. Always disconnect power before working with electrical circuits.

• Ensure the main power supply is OFF before installation or any wiring changes.
• Verify that the rated voltage and current of the circuit breaker match your electrical system requirements.
• Use appropriate wire gauges for the rated current to prevent overheating and fire hazards.
• Do not operate the device if it appears damaged or malfunctioning.
• This device is designed for indoor use in dry environments unless otherwise specified.

3. Product Overview

3.1 Key Features

• Remote Control: Manage your circuit breaker from anywhere using the Tuya Smart Life app.
• Voice Control: Compatible with Amazon Alexa and Google Home for hands-free operation.
• Automatic Reclosing: Automatically restores power after a fault condition (e.g., temporary overcurrent).
• Comprehensive Protection: Includes overload, short circuit, overvoltage, and undervoltage protection.
• Scheduling & Timing: Set timely ON/OFF schedules and time delays for connected devices.
• Status Indication: LED indicators provide clear operational status.

3.2 Components

1. L Pole / N Pole: Terminals for Live and Neutral wire connections.
2. Model Number: Device identification.
3. Indication Window: Displays internal contact status.
4. LED Indicator: Shows device status (e.g., WiFi pairing, ON/OFF).
5. Slider for WiFi Pairing Memory: Used to initiate WiFi pairing mode.
6. Operating Handle: Manual ON/OFF switch.
7. Wiring Screw: Secure wire connections.

4. Specifications

5. Setup & Installation

IMPORTANT: All electrical work must comply with local electrical codes and regulations. If you are not confident in performing electrical installations, please consult a certified electrician.

5.1 Wiring Diagram

The TOSM1-100 is designed for DIN rail mounting. Ensure proper connection of Live (L) and Neutral (N) wires as indicated on the device and in the diagram below. The input (IN) terminals are at the top, and output (OUT) terminals are at the bottom.

1. Turn off the main power supply at the circuit breaker panel.
2. Mount the TOSM1-100 onto a standard DIN rail.
3. Connect the incoming Live (L) wire to the 'L' terminal at the top (IN) and the incoming Neutral (N) wire to the 'N' terminal at the top (IN).
4. Connect the outgoing Live (L) wire to the 'L' terminal at the bottom (OUT) and the outgoing Neutral (N) wire to the 'N' terminal at the bottom (OUT).
5. Ensure all wiring screws are tightened securely to prevent loose connections and potential hazards.
6. Double-check all connections before restoring power.

5.2 Network Pairing (Tuya Smart Life App)

To enable smart features, you need to pair the device with the Tuya Smart Life app.

1. Prepare for Connection: Ensure the circuit breaker is powered on and the LED indicator is flashing blue slowly, indicating it's ready for pairing. If not, press and hold the WiFi pairing slider/button until it flashes.
2. Download App: Download the "Tuya Smart" or "Smart Life" app from your smartphone's app store (iOS/Android).
3. Register/Login: Open the app and register for a new account or log in with an existing one.
4. Add Device: In the app, tap the '+' icon in the upper right corner to add a device. The app should automatically discover the "WiFi smart circuit breaker." If not, manually select "Electrical Engineering" > "Circuit Breaker (Wi-Fi)".
5. Connect to Network: Select your 2.4GHz Wi-Fi network and enter the password. The device does not support 5GHz Wi-Fi.
6. Confirm Pairing: Once connected, the LED indicator on the circuit breaker will change from a slow flashing red to a steady red light. The device will appear in your app.

6. Operation

6.1 Manual Operation

The operating handle allows for manual switching ON or OFF. Push the handle up for ON and down for OFF. The indication window will show the contact status (Green for OFF, Red for ON).

6.2 Remote Control (Tuya App)

Once paired, you can control the circuit breaker remotely via the Tuya Smart Life app.

• Switch ON/OFF: Tap the switch icon in the app to turn the circuit breaker on or off.
• Voltage Monitoring: View real-time current voltage (Note: This model does NOT include power monitoring functionality).
• Event Log: Review events such as remote ON/OFF actions.
• AutoClose: Enable or disable automatic reclosing.
• Protection Settings: Adjust undervoltage and overvoltage thresholds (e.g., UndervoltageValue, OvervoltageValue).

6.3 Voice Control

Integrate your circuit breaker with Amazon Alexa or Google Home for voice commands.

Follow the instructions within the Tuya Smart Life app to link your account with Amazon Alexa or Google Assistant. Once linked, you can use commands like "Hey Google, turn off the light" or "Alexa, turn on the circuit breaker."

6.4 Timing Functions

Set schedules for automatic ON/OFF operations.

In the Tuya Smart Life app, navigate to the device settings and find the "Timing" or "Schedule" option. You can set specific times for the circuit breaker to switch on or off, and configure repeat patterns.

6.5 Protection Functions

The TOSM1-100 provides multiple layers of protection:

• Overload Protection: Automatically trips when the current exceeds the rated capacity for a sustained period.
• Short Circuit Protection: Instantly trips in case of a short circuit to prevent damage.
• Overvoltage Protection: Trips if the voltage exceeds the set overvoltage threshold.
• Undervoltage Protection: Trips if the voltage drops below the set undervoltage threshold.
• Automatic Reclosing: After a fault (e.g., temporary overcurrent or voltage fluctuation), the device can be configured to automatically reclose and restore power after a set delay, if the fault condition is no longer present.

7. Maintenance

• Regular Inspection: Periodically check the circuit breaker for any signs of physical damage, discoloration, or loose connections.
• Cleaning: Keep the device clean and free from dust and debris. Use a dry, soft cloth for cleaning. Do not use liquids or abrasive cleaners.
• Firmware Updates: Check the Tuya Smart Life app for any available firmware updates for your device to ensure optimal performance and security.
• Professional Check: For critical installations, consider periodic inspection by a qualified electrician.

8. Troubleshooting

Problem: Device does not power on or respond.

Solution: Check the main power supply. Ensure the operating handle is in the ON position. Verify all wiring connections are secure. If the device tripped, check for overload or short circuit conditions.

Problem: Cannot connect to Wi-Fi or app.

Solution: Ensure your Wi-Fi network is 2.4GHz. Check Wi-Fi signal strength at the device location. Restart your router and the circuit breaker. Try resetting the device to pairing mode (LED flashing blue slowly) and re-attempt pairing in the Tuya app.

Problem: Device trips frequently.

Solution: This indicates an electrical fault. Check for overloads (too many devices on the circuit), short circuits, or voltage fluctuations (over/undervoltage). Consult an electrician to diagnose the underlying electrical issue.

Problem: Meter shows 220V but the system is 400V (or vice versa).

Solution: This suggests incorrect wiring for the intended voltage system (e.g., single-phase vs. three-phase connection) or an incorrect product variant for your supply. Verify your electrical system's voltage and ensure the circuit breaker is wired correctly for that voltage. Consult a qualified electrician.

Problem: Wiring terminals seem too small for high current (e.g., 100A) cables.

Solution: Always use appropriate wire gauges that can safely carry the rated current of the circuit breaker. If the terminals are physically too small for the required wire gauge, do not force the connection. This is a serious safety concern. Consult a qualified electrician or consider if a different model with larger terminals is necessary for your application.

9. User Tips

• Professional Installation: For safety and compliance, especially with high current ratings (e.g., 100A) or complex setups, always have the circuit breaker installed by a qualified electrician.
• Wi-Fi Stability: Ensure a stable 2.4GHz Wi-Fi connection for reliable remote control and monitoring. Place your router strategically or consider a Wi-Fi extender if needed.
• App Familiarization: Spend time exploring the Tuya Smart Life app's features, including scheduling, automation, and protection settings, to maximize the benefits of your smart circuit breaker.
• Regular Checks: Periodically test the circuit breaker's manual trip function (if available and safe to do so) and check the app for any alerts or event logs.

10. Warranty & Support

For warranty information, technical support, or service inquiries, please contact your original seller or the manufacturer directly. Keep your purchase receipt and product model number handy for faster assistance.