1. Introduction
The EARU EAB6L Mini Residual Current Circuit Breaker with Overcurrent Protection (RCBO) is a compact and reliable device designed to provide comprehensive electrical protection in residential and light commercial applications. It integrates the functions of a Miniature Circuit Breaker (MCB) and a Residual Current Device (RCD), offering protection against overload, short-circuit currents, and earth fault currents.
This manual provides essential information for the safe installation, operation, and maintenance of your EAB6L RCBO.
2. Safety Information
WARNING: Electrical shock hazard. Installation and maintenance should only be performed by qualified personnel.
- Always disconnect power before installing or servicing the device.
- Ensure the device's specifications (voltage, current, breaking capacity) match your electrical system requirements.
- Do not operate the device if it appears damaged.
- Follow all local and national electrical codes and regulations.
- The 'Press Monthly' test button should be operated regularly to ensure proper functioning of the residual current protection.
3. Product Overview and Components
The EAB6L RCBO is a 2-pole device featuring a compact design for easy installation in distribution boards.
Figure 1: Front view of the EARU EAB6L RCBO, highlighting leakage, overload, and short circuit protection, and available current ratings.
Figure 2: General product image of the EARU EAB6L RCBO, front view.
Figure 3: Top view of the RCBO, showing the 'IN' (input) terminals.
Figure 4: Bottom view of the RCBO, showing the 'OUT' (output) terminals.
Figure 5: Side view of the RCBO, illustrating the DIN rail mounting clips.
4. Technical Specifications
Figure 6: Dimensional drawing and key specifications for the EARU EAB6L RCBO.
| Attribute | Value |
|---|---|
| Model Number | EAB6L |
| Type | Mini |
| Poles | 2P |
| Rated Voltage | 230V 50Hz |
| Rated Current (In) | 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A |
| Rated Residual Operating Current | 30mA |
| Breaking Capacity | 6kA |
| Action Time | ≤0.1S |
| Protection Functions | Leakage protection, Overload protection, Short circuit protection |
| Trip Type | Type C (5-10 In) |
| Working Temperature | -35~+70℃ |
| Shell Material | PC flame retardant |
| Electrical Life | 10000+ times |
| Mechanical Life | 15000+ times |
| Certification | CE |
| Origin | Mainland China |
| Is Smart Device | No |
5. Installation (Setup)
The EAB6L RCBO is designed for DIN rail mounting. Ensure the power supply is completely disconnected before proceeding with installation.
- Mounting: Securely attach the RCBO to a standard DIN rail in your electrical distribution board. The device features clips on the bottom for easy attachment.
- Wiring:
- Connect the incoming live and neutral wires to the 'IN' terminals at the top of the RCBO (refer to Figure 3).
- Connect the outgoing live and neutral wires to the 'OUT' terminals at the bottom of the RCBO (refer to Figure 4).
- Ensure all connections are tight and secure to prevent loose contacts and overheating.
- The standard practice is to connect the supply to the top terminals and the load to the bottom terminals.
- Verification: After wiring, double-check all connections for correctness and tightness. Ensure no bare wires are exposed.
Video 1: Product demonstration showing physical features, DIN rail mounting, and basic operation with a light bulb.
6. Operation
- Switching ON: Once installed and wired correctly, switch on the main power supply. Push the blue toggle switch of the RCBO upwards to the 'ON' position. The indicator window should show green.
- Switching OFF: To disconnect power to the protected circuit, push the blue toggle switch downwards to the 'OFF' position. The indicator window should show red.
- Trip Indication: In case of an overload, short circuit, or earth fault, the RCBO will automatically trip to the middle position. The indicator window will show red.
- Resetting after a Trip:
- Identify and rectify the cause of the trip (e.g., remove overloaded appliances, fix short circuits or earth faults).
- Push the toggle switch fully downwards to the 'OFF' position.
- Then, push the toggle switch upwards to the 'ON' position to restore power.
- Test Button: The orange 'Press Monthly' button is for testing the residual current protection function. Press this button monthly to ensure the RCBO trips correctly. If it does not trip, the device may be faulty and needs replacement.
7. Maintenance
- Regular Testing: Press the 'Press Monthly' test button at least once a month to verify the RCD function.
- Visual Inspection: Periodically inspect the RCBO 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 liquid cleaners.
- Professional Check: It is recommended to have your electrical system, including protective devices, inspected by a qualified electrician periodically.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| RCBO trips frequently | Overload, short circuit, or earth fault in the circuit. | Identify and rectify the fault. Reduce load, check for damaged wiring/appliances. |
| RCBO does not reset | Persistent fault in the circuit, or internal damage to the RCBO. | Ensure the fault is cleared. If it still doesn't reset, the RCBO might be faulty and needs replacement by a qualified electrician. |
| RCBO does not trip when test button is pressed | Faulty residual current detection mechanism. | The RCBO is faulty and must be replaced immediately by a qualified electrician. |
| RCBO feels hot to the touch | Overload, loose connections, or undersized wiring. | Immediately disconnect power. Check for overload, tighten connections, and ensure wiring is appropriate for the current rating. Consult an electrician. |
9. User Tips
- Wiring Direction: While some circuit breakers can be wired with supply at the bottom and load at the top, it is generally recommended and standard practice to connect the main power supply to the 'IN' terminals (top) and the load to the 'OUT' terminals (bottom) for safety and consistency. Always refer to the markings on the device.
- Monthly Testing: Make it a habit to press the test button on your RCBO every month. This simple check ensures that the leakage protection mechanism is functioning correctly, providing continuous safety for your home.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please contact your point of purchase or the manufacturer directly. Keep your purchase receipt as proof of purchase.
