1. Introduction
The TOMZN TOVA-63T is a smart WiFi circuit breaker designed for comprehensive electrical protection and energy management. It integrates functions such as remote control, real-time monitoring of electrical parameters (current, voltage, power, energy consumption), and various adjustable protection settings including overload, over/under voltage, over current, leakage, and high temperature. This device can be controlled and monitored via the Tuya SmartLife app, offering enhanced safety and convenience for your electrical system.
2. Safety Information
WARNING: Electrical installation and maintenance should only be performed by qualified personnel. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Always disconnect power before installing or servicing the device.
- Ensure proper wiring according to local electrical codes and the provided wiring diagram.
- Do not operate the device if it is damaged or malfunctioning.
- This device is designed for single-phase L-N 110V/220V AC systems.
- The TOVA-63T can only cut off the Live (L) line.
- This device supports 2.4G WiFi networks only. It is NOT compatible with 5G WiFi.
3. Package Contents
- 1 x TOMZN TOVA-63T WiFi Smart Circuit Breaker
- User Manual (this document)
4. Product Overview
The TOVA-63T features a clear LCD display and intuitive controls for local operation and monitoring. It is designed for DIN rail mounting.
Figure 4.1: Front view of the TOVA-63T with a representation of the Tuya SmartLife app interface.
4.1. Display and Controls
Figure 4.2: Detailed view of the TOVA-63T's display and control buttons.
- Signal Light: Indicates device status.
- Power Light: Indicates power status.
- WiFi Display: Indicates WiFi connection status.
- LCD Display: Shows real-time Voltage (V), Ampere (A), kWh, and Leakage value (mA).
- SET Button: Press for more than 5 seconds to enter setting mode.
- Adjustment Key (+): Used to increase values or navigate menus.
- Adjustment Key (-): Used to decrease values or navigate menus. Long press for 5 seconds to pair WiFi.
- Manual Switch: Power ON/OFF button.
5. Specifications
Figure 5.1: Key product parameters.
| Parameter | Value |
|---|---|
| Model Number | TOVA-63T |
| Rated Voltage | 85-300V AC |
| Frequency | 50/60Hz |
| Working Current | 1A-63A (Adjustable) |
| Native Power Consumption | ≤2W |
| kWh Range | 0-99999.9kWh |
| Product Size | 84mm x 36mm x 65mm |
| Overvoltage Protection Value | 120V-300V (Adjustable, Default: 270V) |
| Undervoltage Protection Value | 85V-200V (Adjustable, Default: OFF) |
| Overcurrent Protection Value | 1A-63A (Adjustable, Default: 63A) |
| Leakage Protection Value | 10mA-99mA (Adjustable, Default: 0mA) |
| High Temperature Protection | 1-200℃ (Adjustable, Default: 80℃) |
| Reconnect Time (Delay On) | 0s-500s (Adjustable, Default: 10s) |
| Reclosure Times Limit | 1-30 times (Adjustable, Default: 5 times) |
| Protection Delay | 1-500s (Default: 1s for most protections) |
| Leakage Protection Delay | 0.1-10s (Default: 0.1s) |
| Action Time | 1-30s (Default: 0.5s) |
| Calibration | Voltage/Current/kW: -9.9% to 9.9% |
| Connectivity | WiFi (2.4G only) |
| Certification | CE |
| Is Smart Device | Yes |
6. Installation
The TOVA-63T is designed for easy DIY installation on a standard DIN rail. Ensure all power is OFF before proceeding.
6.1. Wiring Diagram
Figure 6.1: Wiring connections for the TOVA-63T.
- Mount the TOVA-63T onto a DIN rail in your electrical panel.
- Connect the incoming Live (L) wire to the 'L IN' terminal and the incoming Neutral (N) wire to the 'N IN' terminal.
- Connect the outgoing Live (L) wire to the 'L OUT' terminal and the outgoing Neutral (N) wire to the 'N OUT' terminal.
- Ensure all connections are secure and tightened appropriately.
- Verify that the TOVA-63T is correctly installed to only cut off the Live (L) line.
7. Initial Setup and App Pairing
7.1. Download the App
Download the Tuya SmartLife app from your smartphone's app store (Google Play Store for Android or Apple App Store for iOS).
7.2. WiFi Pairing
- Ensure your smartphone is connected to a 2.4G WiFi network. The TOVA-63T does not support 5G WiFi.
- Power on the TOVA-63T. The WiFi display light should be blinking.
- Open the Tuya SmartLife app and register/log in.
- In the app, tap '+' to add a new device.
- Select the appropriate device type (e.g., 'Circuit Breaker' or 'Energy Meter').
- Follow the in-app instructions to connect the device. You may need to long-press the 'Adjustment Key (-)' on the TOVA-63T for 5 seconds to initiate pairing mode if the WiFi light is not blinking rapidly.
- Once connected, the WiFi display light on the device will become solid.
7.3. Password Protection Settings
The device supports password protection for key parameters to prevent unauthorized changes.
Figure 7.1: App interface for setting password protection.
You can set a password within the Tuya SmartLife app to secure access to critical settings.
8. Operation
8.1. Remote Control
Use the Tuya SmartLife app to remotely turn the circuit breaker ON or OFF from anywhere at any time.
8.2. Real-time Data Monitoring
The device's LCD display and the Tuya SmartLife app provide real-time data:
Figure 8.1: Real-time display of working voltage, current, kWh, and other parameters.
- Current (A)
- Voltage (V)
- Leakage Current (mA)
- Total kWh (Energy Consumption)
- Power Factor
- Frequency (Hz)
8.3. Operation and Alarm Records
The app allows you to view detailed operation records and alarm records, providing a comprehensive understanding of the equipment's performance and any triggered protections.
Figure 8.2: Example of operation and alarm records in the Tuya SmartLife app.
9. Protection Settings
The TOVA-63T offers multiple adjustable protection functions to ensure electrical safety. All protection settings can be configured via the Tuya SmartLife app.
Figure 9.1: Display of various protection settings on the device.
- Overload Protection: Adjustable from 1-17kW (default: 13kW). Delay: 1-500s (default: 1s).
- Undervoltage Protection: Adjustable from 80V-210V (default: OFF). Delay: 1-500s (default: 1s).
- Overvoltage Protection: Adjustable from 120V-300V (default: 270V). Delay: 1-500s (default: 1s).
- Overcurrent Protection: Adjustable from 1A-63A (default: 63A). Delay: 1-500s (default: 1s).
- High Temperature Protection: Adjustable from 1-200℃ (default: 80℃). Delay: 1-500s (default: 1s).
- Leakage Protection: Adjustable from 0mA-99mA (default: 0mA). Delay: 0.1-10s (default: 0.1s).
- Reconnect Time (Delay On): Adjustable from 0s-500s (default: 10s).
- Reclosure Times Limit: Adjustable from 1-30 times (default: 5 times).
- Action Time: Adjustable from 1-30s (default: 0.5s).
- Voltage/Current/kW Calibration: Adjustable from -9.9% to 9.9%.
10. Advanced Features
10.1. Smart Relay Modes
The TOVA-63T offers three smart relay modes for intelligent power recovery:
Figure 10.1: Explanation of ON, OFF, and MEMORY relay modes.
- ON: Auto-restarts when power returns.
- OFF: Stays off after reconnection.
- MEMORY: Remembers its last state for seamless operation.
10.2. Countdown Function
Set a countdown timer for automatic power off. This helps avoid unnecessary dangers by ensuring equipment is turned off at a specified time.
Figure 10.2: Setting a countdown for auto power off in the app.
10.3. Schedule Function (Intelligent Time Control)
Create schedules to automatically turn the device ON/OFF at specific times, allowing for fine-tuned electricity usage planning.
Figure 10.3: Example of setting a schedule for device operation.
10.4. Time Period Rate Limiting Function
This function allows you to set different overcurrent values for different time periods. For example, you can set a 16A overcurrent limit from 11:55 to 12:55 and a 25A limit from 13:56 to 15:57.
Figure 10.4: Configuring time period rate limiting in the app.
10.5. Circulate Function (Smart Cycle Mode)
Set custom run and pause durations to fit different needs, ideal for heating, cooling, ventilation, and more. For example, the equipment can be turned on for 1 minute, then shut off for 2 minutes, followed by another 1 minute on and 2 minutes off, repeating this cycle.
10.6. Inching Function
Turning on this feature will put the device in an automatic state where it will turn on for a set period and then automatically turn off.
Figure 10.5: Setting the inching function duration in the app.
10.7. Prepaid Function
When the set kWh value is reached, the WiFi circuit breaker will automatically cut off the power supply. This feature can be managed via the app for expense management.
Figure 10.6: App interface for managing the prepaid function.
11. Maintenance
11.1. Restore Factory Settings
If you encounter issues or wish to reset all configurations, you can restore the device to its factory settings via the Tuya SmartLife app. This can fix errors or misconfigurations instantly without technical skills.
Figure 11.1: Option to restore factory settings in the app.
11.2. Cleaning
Wipe the device with a dry, soft cloth. Do not use abrasive cleaners or solvents.
12. Troubleshooting
- Device not connecting to WiFi: Ensure your router is broadcasting a 2.4G WiFi signal. The device does not support 5G WiFi. Try moving the device closer to the router or restarting the pairing process.
- Protection trips frequently: Check your protection settings in the app (overload, over/under voltage, over current, leakage, high temperature). Adjust the thresholds if they are too sensitive for your load. Review the alarm records in the app to identify the cause of the trip.
- Display not working: Ensure the device is receiving power. If the display is completely off, check wiring. If data is not visible after backlight turns off, this is normal behavior for some models (e.g., 'No Backlight' variant).
- Device not responding to app commands: Check WiFi connectivity. Ensure the device's WiFi indicator is solid. Restart the app or the device if necessary.
13. User Tips
- Protection Feedback: When a protection is triggered, the device's display will signal the event, and the app will record it in the alarm history, providing clear feedback on the cause.
- Consistent Design: The physical appearance of the device is consistent with product images, ensuring you receive the expected design.
- Regular Monitoring: Periodically check the real-time data and operation records in the app to understand your energy consumption patterns and ensure optimal device performance.
14. Warranty and Support
For warranty information and technical support, please refer to the seller's policies or contact the point of purchase. Keep your purchase receipt for any warranty claims.