1. Introduction
This manual provides essential information for the safe and effective installation, operation, and maintenance of the DEWIN 40A 300mA 2P AC230V Automatic Recloser RCCB Circuit Breaker. This intelligent device is designed to automatically reclose the circuit breaker in the event of an unexpected trip, minimizing downtime and maintenance costs. It features a digital display and multiple operating modes for enhanced control and safety.
Image 1.1: Front view of the DEWIN Automatic Recloser RCCB Circuit Breaker.
2. Safety Information
WARNING: Non-professionals are not permitted to install this device. Installation and maintenance should only be performed by qualified electricians to ensure safety and proper functionality.
- Always disconnect power before installation or maintenance.
- Ensure proper grounding according to local electrical codes.
- Do not operate the device if it appears damaged.
- This device is not suitable for photovoltaic systems installed by individuals.
3. Product Features
The DEWIN Automatic Recloser RCCB Circuit Breaker offers several key features:
- Intelligent Automatic Reclosing: Automatically restores power after an unexpected trip, reducing manual intervention.
- Automatic/Manual Switching: Allows selection between automatic reclosing and manual operation.
- Self-Locking Mode: Engages after multiple consecutive faults to prevent continuous reclosing until manual inspection.
- Digital Display: A 3-digit display shows the number of trips and closures, and a countdown to reclosing time.
- LED Indicator: Provides visual status of the device (normal operation, fault).
- Durable Construction: Made from PC material with an IP20 protection rating.
- DIN Rail Installation: Designed for easy mounting on a 35mm DIN rail.
Image 3.1: Key features of the intelligent automatic reclosing device.
4. Specifications
Refer to the following table and diagram for detailed product specifications and dimensions:
| Parameter | Value |
|---|---|
| Material | Polycarbonate |
| Operating Voltage | 230V AC |
| Rated Current | 40 A |
| Operating Frequency | 50/60 Hz |
| Leakage Protection | 300 mA |
| Control Signal | Automatic reclosing + dry contact control |
| Digital Display | 3-digit display (trips, closures, recovery countdown) |
| Effective Control Signal Duration | > 400 ms |
| Closing Action Time | < 1 second |
| Opening Action Time | < 0.5 seconds |
| Control Cable Length | ≤ 1500 m |
| Power Consumption | ≤ 1.5 VA (static), ≤ 25 VA (dynamic) |
| Rated Insulation Voltage | 400 V |
| Rated Impulse Withstand Voltage (Uimp) | 4 kV (4.9 kV at sea level) |
| Electrical Lifespan | 10,000 movements, 3 movements/minute |
| Mechanical Lifespan | 10,000 cycles |
| Protection Rating | IP20 |
| Ambient Temperature | -25 °C to +70 °C |
| Storage Temperature | -40 °C to +70 °C |
| Power & Control Terminal Capacity | 28-12 AWG, 2.5 mm² |
| Auxiliary Signal Terminal Capacity | 28-14 AWG, 1.5 mm² |
| Mounting | DIN rail EN 60715 (35 mm) |
| Product Dimensions (L x W x H) | 12 x 12 x 9 cm |
| Product Weight | 343 grams |
Image 4.1: Product size information and a summary of key specifications.
5. Setup and Installation
The DEWIN Automatic Recloser RCCB Circuit Breaker is designed for DIN rail mounting. Follow the wiring diagram carefully for correct installation.
5.1 Wiring Diagram
The following diagram illustrates the typical wiring for the circuit breaker. Ensure all connections are secure and comply with electrical safety standards.
Image 5.1: Product wiring diagram showing connections for line, neutral, and load, including optional external control buttons.
Note:
- The product does not require an external button for automatic reclosing.
- When manually controlling the opening and closing of the switch, an external control button is required.
- A normally open self-reset button is used; other button types are not applicable.
5.2 Terminal Connections
The device features dedicated terminals for power, control signals, and auxiliary signals. Ensure correct wire gauges are used as specified in the specifications section.
Image 5.2: Detailed view of the terminal block for wiring connections.
6. Operating Modes
The circuit breaker supports both automatic and manual operating modes, selectable via a switch on the device.
6.1 Automatic/Manual Switching
Use the AUTO/MANU switch to select the desired operating mode.
| Mode | Description |
|---|---|
| AUTO Mode | The circuit breaker will automatically restore after a fault. |
| MANU Mode | Manual re-activation is required after a fault. Remote control opening and closing are deactivated. |
Note: After the "LOCK" lock is activated, the circuit breaker cannot be closed to protect electrical safety and prevent accidental contact.
6.2 LED Digital Display
The integrated LED display provides visual feedback on the device's status and operational counts.
| Mode | LED Indication |
|---|---|
| AUTO Mode | Red flashing indicates opening; Green flashing indicates closing. |
| MANU Mode | Yellow light is always on for manual opening and closing. The display shows the number of opening and closing times, and the countdown time for closing recovery. |
Image 6.1: Close-up of the operating mode selection switch and LED digital display.
6.3 Self-Locking Mode
To ensure safety, the device enters a self-locking mode after multiple consecutive circuit faults:
- First fault: The circuit breaker automatically closes after 9 seconds.
- Second fault: The circuit breaker automatically closes after 59 seconds.
- Third fault: The circuit breaker automatically closes after 299 seconds.
- Fourth fault: The circuit breaker enters self-locking mode. Manual reclosing is required after checking circuit safety.
Image 6.2: Visual representation of the self-locking mode sequence and timing.
7. Maintenance
The DEWIN Automatic Recloser RCCB Circuit Breaker is designed for minimal maintenance. Regular checks should include:
- Visually inspect the device for any signs of damage or overheating.
- Ensure all terminal connections remain tight.
- Periodically test the RCCB functionality according to local regulations (e.g., using the 'Test Monthly' button if available).
- Keep the device free from dust and moisture.
8. Troubleshooting
If the circuit breaker is not functioning as expected, consider the following:
- Device not reclosing automatically: Check if the device is in MANU mode. Switch to AUTO mode if automatic reclosing is desired.
- Device in self-locking mode: If the device has tripped multiple times consecutively, it will enter self-locking mode. This is indicated by the display. A manual inspection of the circuit for faults is required before manually reclosing the breaker.
- No display or indicator lights: Check the power supply to the device.
- Persistent tripping: This indicates a persistent fault in the circuit. Do not attempt to repeatedly reclose the breaker. Identify and rectify the underlying electrical fault.
For issues not resolved by these steps, consult a qualified electrician.
9. Application
This intelligent circuit breaker is suitable for a wide range of applications where automatic reclosing and enhanced electrical safety are beneficial. These include:
- Unmanned mobile phone base stations
- Elevators
- Smart homes
- Smart factories
- New energy vehicle charging piles
Important: It cannot be used for individual photovoltaic systems.
Image 9.1: Various application scenarios for the DEWIN Automatic Recloser RCCB Circuit Breaker.
10. Warranty and Support
For warranty information and technical support, please refer to the documentation provided at the time of purchase or contact your vendor. Keep your purchase receipt for warranty claims.