1. Introduction and Safety Information
The TONGOU Type A RCBO (Residual Current Circuit Breaker with Overcurrent Protection) with Tuya Smart Auto Recloser functionality is designed to provide earth leakage and overload protection for electrical circuits. It integrates smart features for remote control, real-time monitoring, and automatic reclosing after faults, enhancing electrical safety and convenience.
Important Safety Instructions:
- Installation and maintenance should only be performed by qualified electricians.
- Always disconnect power before installing or servicing the device.
- Ensure proper wiring according to local electrical codes and the provided diagrams.
- Do not operate the device if it appears damaged.
- This device is designed for indoor use in dry environments unless otherwise specified.

2. Product Features
This smart RCBO offers continuous protection and advanced control for your electronic devices:
- Dual Protection: Provides both earth leakage (Type A) and overcurrent protection.
- Smart Connectivity: Works with Tuya and Smart Life applications for remote control and monitoring via WiFi.
- Real-time Voltage Monitoring: Digital display and app integration show live voltage (100-280V) and historical trend data (hourly, daily, monthly, yearly).
- Voltage Protection: Automatic shutdown if voltage exceeds 250V and alarms if it drops below 180V.
- Auto Reclosing: Automatically attempts to reclose the circuit after a fault, with a configurable reclosing interval (30s) and cycles (3).
- Smart Scheduling: Supports sunrise/sunset automation and custom timing cycles (15 minutes to 24 hours).
- Memory Function: Retains settings even after power outages.
- Multiple Safety Protections: Certified compliance (CE, CCC), dual-color status indicator (Red/Green), reinforced buckle mechanism, flame-retardant protection, and touch protection design.
- Flexible Wiring: Compatible with terminal, pin, and DPN busbar connections (top/bottom).


3. Specifications
| Attribute | Value |
|---|---|
| Model Number | TOSAR1-XWTNA-1N+BD6 |
| Type | Residual Current (RCBO) |
| Poles Number | 1P+N |
| Rated Voltage | 220V/230V/240V |
| Rated Current | 16A, 25A, 32A, 40A |
| Rated Operating Current (In) | 10mA, 30mA |
| Breaking Capacity | 6kA |
| Tripping Characteristics | Type A |
| Curve | B, C |
| Rated Impulse Withstand Voltage (Uimp) | 4 kV |
| Static Power | 1 VA |
| Rated Frequency | 50/60 Hz |
| Operating Temperature | -25°C to +60°C (-13°F to 140°F) |
| Reclosing Interval | 30s → 30s → 30s |
| Reclosing Cycles | 3 |
| Electrical Life | 10,000 operations |
| Mounting | 35mm DIN Rail |
| Certification | CE, CCC |
| Is Smart Device | Yes |
Dimensions:

4. Setup and Installation
This device is designed for 35mm DIN rail mounting. Ensure all connections are secure and comply with local electrical standards. Refer to the detailed wiring diagrams below for proper installation.
4.1 Wiring Diagrams




4.2 App Integration
- Download the Tuya Smart or Smart Life app from your smartphone's app store.
- Register or log in to your account.
- Add the device by following the in-app instructions. Ensure the RCBO is in Wi-Fi mode (slide the switch to the right).
- Once connected, you can access all smart features, including remote ON/OFF, voltage monitoring, and scheduling.
5. Operating Instructions
5.1 Manual Operation
The RCBO features a physical switch for manual control:
- ON: Turns the circuit breaker on.
- OFF: Turns the circuit breaker off.
- AUTO: Enables automatic reclosing and smart functions via the app.
- LOCK: Locks the switch in its current position, preventing accidental changes.

5.2 Smart App Operation
Once connected to the Tuya Smart or Smart Life app:
- Remote ON/OFF: Control the circuit breaker from anywhere.
- Real-time Voltage Monitoring: View the current voltage (e.g., 224.6V) and track power running time, device operation duration, power failure number, and switch times.
- Voltage Statistics Table: Access hourly, daily, monthly, and annual voltage trend data.
- Auto Reclose Function: Enable or disable the automatic reclosing feature in the app settings.
- Timing Function: Set schedules for automatic operation, including specific times, sunrise/sunset, or custom cycle timings.
- Overvoltage/Undervoltage Protection: Configure voltage thresholds for automatic reclosing (100-280V).


6. Maintenance
The TONGOU RCBO is designed for minimal maintenance. However, regular checks are recommended:
- Visual Inspection: Periodically check the device for any signs of physical damage, discoloration, or loose connections.
- Functionality Test: Test the manual ON/OFF function and verify app control periodically.
- Firmware Updates: Ensure the device firmware is up-to-date through the Tuya Smart or Smart Life app for optimal performance and security.
- Cleaning: Keep the device free from dust and debris. Use a dry, soft cloth for cleaning. Do not use liquids or abrasive cleaners.
7. Troubleshooting
If you encounter issues with your TONGOU RCBO, refer to the following troubleshooting steps:
- Failure to Reclose Automatically:
- Ensure the device is in Wi-Fi mode (slide the physical switch to the right). The auto-reclose function is only available in Wi-Fi mode.
- Verify that the "Auto Reclose" function is enabled within the Tuya Smart or Smart Life app settings.
- Product Cannot Be Manually Tripped (Handle Stuck):
- Attempt a remote open/close operation via the Tuya Smart or Smart Life app. This often resolves the issue.
- Product Fails to Reclose Automatically, Display Shows Error Codes C01, H01, or H02:
- These error codes indicate specific faults. First, go to "Setting → Advanced → Fault Reset" in the app to clear any fault codes.
- Then, power cycle the device (turn the power off and on again). This should resolve the fault.
- If the issue persists, consult the full user manual PDF for detailed explanations of error codes and further troubleshooting steps.
- No App Connectivity:
- Ensure your Wi-Fi network is active and the signal strength is adequate where the device is installed.
- Check that the device is in pairing mode or Wi-Fi mode.
- Restart your router and the RCBO, then attempt to reconnect via the app.
8. User Tips
- Storm Protection: During severe weather, configure the app to send alerts if voltage exceeds 250V and enable remote power cut-off to protect sensitive electronics.
- Vacation Automation: Use the smart scheduling feature to set custom cycles for appliances like aquarium pumps (e.g., 15 minutes every 2 hours) while you are away.
- Appliance Protection: Leverage the voltage monitoring and protection features to safeguard appliances like refrigerators from damage due to voltage fluctuations. The historical voltage graph can provide evidence for insurance claims if needed.
- Power Stability Monitoring: Regularly review the daily, monthly, and yearly voltage graphs to identify recurring power issues (e.g., frequent voltage drops) and gather data to request improvements from your power provider.
- Post-Outage Recovery: After a power outage (e.g., due to a typhoon), the auto-reclose function ensures that connected lights and appliances reboot automatically once power stabilizes, minimizing disruption.
9. Warranty and Support
For detailed warranty information, technical support, and a comprehensive guide to all features and troubleshooting, please refer to the official user manual PDF. The PDF manual contains in-depth diagrams and explanations not fully covered in this summary.
You can access the user manual PDF here: TONGOU RCBO User Manual (PDF)
For further assistance, please contact TONGOU customer support.





