TOMZN Three Phase 3P+N WiFi Smart Circuit Breaker

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of your TOMZN TOB1S-63 Three Phase 3P+N WiFi Smart Circuit Breaker. This device is designed to provide advanced electrical protection and smart control capabilities for various applications, including solar installations. Please read this manual thoroughly before installation and use to ensure safe and efficient operation.

2. Safety Information

WARNING: Electrical shock hazard. Installation and servicing must be performed by qualified personnel only. Always disconnect power before working on the circuit breaker or associated wiring.

• Ensure the main power supply is OFF before installation or maintenance.
• Verify correct wiring connections to prevent damage to the device and connected equipment.
• Do not operate the circuit breaker if it appears damaged.
• This device is designed for indoor use or in appropriate enclosures that protect it from direct weather exposure.

3. Product Overview

The TOMZN TOB1S-63 is a smart circuit breaker offering protection against over-voltage (OVP), under-voltage (UVP), over-current (OCP), and short-circuit conditions. It features WiFi connectivity for remote control via the TUYA Smartlife app and supports RS485 Modbus communication.

Figure 3.1: Front view of the TOB1S-63 Smart Circuit Breaker, showing the main switches, power and load terminals, WiFi antenna, and indicator lights.

Figure 3.2: Angled view highlighting the input (Power) and output (Load) terminals, along with the WiFi antenna connection point.

Key Components:

• Main Switches: Manual ON/OFF control for each phase.
• Power Terminals: Input connections for the three-phase and neutral lines.
• Load Terminals: Output connections to the protected circuit.
• WiFi Antenna: For wireless communication with the Smartlife app.
• Signal/Light Indicators: Provide status feedback (e.g., power, WiFi connection).
• DIN Rail Mounting Clips: For secure installation on a standard DIN rail.

Figure 3.3: Side view illustrating the DIN rail mounting clips for easy installation.

4. Setup

4.1 Mechanical Installation

1. Ensure all power is disconnected at the main breaker.
2. Mount the TOB1S-63 circuit breaker onto a standard 35mm DIN rail by engaging the clips on the back of the device.

4.2 Electrical Wiring

The TOB1S-63 is a 3P+N device. Connect the incoming power supply to the 'Power' terminals and the load to the 'Load' terminals as indicated on the device.

• Connect the three phase lines (L1, L2, L3) and the neutral line (N) to the respective 'Power' input terminals.
• Connect the corresponding load lines (L1, L2, L3, N) to the 'Load' output terminals.
• Ensure all screw-type terminals are tightened securely to prevent loose connections and arcing.

Figure 4.1: Top view with a simplified wiring diagram indicating Power (input) and Load (output) connections.

4.3 WiFi Network Connection (TUYA Smartlife App)

1. Download the 'TUYA Smartlife' app from your smartphone's app store.
2. Register or log in to your Smartlife account.
3. Ensure the circuit breaker is powered ON. The 'Signal' indicator light should be blinking. If not, press and hold the 'Press 10s network' button until it blinks rapidly.
4. In the Smartlife app, tap '+' to add a device. Select 'Electrical' > 'Circuit Breaker (Wi-Fi)'.
5. Follow the on-screen instructions to connect the device to your 2.4GHz WiFi network.
6. Once connected, the 'Signal' indicator will become solid.

4.4 RS485 Modbus Connection (Optional)

For RS485 Modbus communication, connect the A and B terminals of the circuit breaker to your Modbus network. Refer to the Modbus protocol documentation for specific register addresses and communication parameters.

5. Operating Instructions

5.1 Manual Operation

To manually turn the circuit breaker ON or OFF, use the red toggle switches on the front panel. Push up for ON, push down for OFF.

5.2 Smartlife App Operation

Once connected to the Smartlife app, you can:

• Remotely turn the circuit breaker ON/OFF.
• Set schedules or timers for automatic operation.
• Monitor real-time current, voltage, and power consumption.
• Adjust protection parameters (OVP, UVP, OCP).

5.3 Protection Features

The TOB1S-63 provides the following adjustable protection features:

• Over Voltage Protection (OVP): Adjustable range 250-300V. The breaker will trip if the voltage exceeds this set limit.
• Under Voltage Protection (UVP): Adjustable range 150-200V. The breaker will trip if the voltage drops below this set limit.
• Over Current Protection (OCP): Adjustable range 1-63A. The breaker will trip if the current exceeds this set limit.
• Short-Circuit Protection: Non-adjustable, inherent protection against short circuits.

Adjust these settings via the Smartlife app interface for the device. After a trip event, investigate the cause before manually resetting the breaker.

6. Maintenance

The TOMZN TOB1S-63 circuit breaker requires minimal maintenance.

• Periodically inspect the wiring connections to ensure they remain tight and free from corrosion.
• Keep the device clean and free from dust and debris. Use a dry, soft cloth for cleaning.
• Do not use liquid cleaners or solvents.
• Ensure proper ventilation around the device to prevent overheating.

7. Troubleshooting

• Device not powering on:
  • Check the main power supply.
  • Verify all input wiring connections are secure.
• Circuit breaker trips frequently:
  • Check for over-current conditions on the load.
  • Verify voltage levels are within the set OVP/UVP ranges.
  • Inspect for short circuits in the connected load.
  • Adjust OVP/UVP/OCP settings if necessary, ensuring they are appropriate for your application.
• WiFi connection issues:
  • Ensure your router is 2.4GHz compatible.
  • Check WiFi signal strength at the device location.
  • Restart the circuit breaker and your WiFi router.
  • Re-attempt the pairing process in the Smartlife app.
• RS485 Modbus communication failure:
  • Verify A and B terminal connections.
  • Check Modbus network configuration and device address.

8. Specifications

9. Warranty and Support

For warranty information and technical support, please refer to the documentation provided with your purchase or contact your retailer. Keep your purchase receipt as proof of purchase.