1. Introducción
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.

Imagen 1.1: Frente view of the DEWIN Automatic Recloser RCCB Circuit Breaker.
2. Información de seguridad
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.
- Desconecte siempre la energía antes de la instalación o el mantenimiento.
- Asegúrese de que haya una conexión a tierra adecuada según los códigos eléctricos locales.
- No opere el dispositivo si parece dañado.
- This device is not suitable for photovoltaic systems installed by individuals.
3. Características del producto
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.
- Pantalla digital: A 3-digit display shows the number of trips and closures, and a countdown to reclosing time.
- Indicador LED: Provides visual status of the device (normal operation, fault).
- Construcción duradera: Made from PC material with an IP20 protection rating.
- Instalación en riel DIN: Diseñado para un fácil montaje en un riel DIN de 35 mm.

Image 3.1: Key features of the intelligent automatic reclosing device.
4. Especificaciones
Refer to the following table and diagram for detailed product specifications and dimensions:
| Parámetro | Valor |
|---|---|
| Material | Policarbonato |
| Vol de funcionamientotage | 230 V CA |
| Corriente nominal | 40 A |
| Frecuencia de funcionamiento | 50/60 Hz |
| Protección contra fugas | 300 mA |
| Señal de control | Automatic reclosing + dry contact control |
| Pantalla digital | 3-digit display (trips, closures, recovery countdown) |
| Duración efectiva de la señal de control | > 400 ms |
| Hora de acción de cierre | < 1 segundo |
| Hora de acción de apertura | < 0.5 segundos |
| Longitud del cable de control | ≤ 1500 m |
| Consumo de energía | ≤ 1.5 VA (static), ≤ 25 VA (dynamic) |
| Vol. De aislamiento nominaltage | 400 V |
| Vol nominal de resistencia al impulsotage (Uimp) | 4 kV (4.9 kV at sea level) |
| Electrical Lifespan | 10,000 movements, 3 movements/minute |
| Vida útil mecánica | 10,000 ciclos |
| Clasificación de protección | IP20 |
| Temperatura ambiente | -25 °C a +70 °C |
| Temperatura de almacenamiento | -40 °C a +70 °C |
| Power & Control Terminal Capacity | 28-12 AWG, 2.5 mm² |
| Auxiliary Signal Terminal Capacity | 28-14 AWG, 1.5 mm² |
| Montaje | Carril DIN EN 60715 (35 mm) |
| Dimensiones del producto (L x An x Al) | 12 x 12 x 9 cm |
| Peso del producto | 343 gramos |

Image 4.1: Product size information and a summary of key specifications.
5. Configuración e instalación
The DEWIN Automatic Recloser RCCB Circuit Breaker is designed for DIN rail mounting. Follow the wiring diagram carefully for correct installation.
5.1 Diagrama de cableado
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.
Nota:
- 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 Conexiones de terminales
The device features dedicated terminals for power, control signals, and auxiliary signals. Ensure correct wire gauges are used as specified in the specifications section.

Imagen 5.2: Detallada view of the terminal block for wiring connections.
6. Modos de funcionamiento
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.
| Modo | Descripción |
|---|---|
| Modo automático | The circuit breaker will automatically restore after a fault. |
| Modo MANÚ | Manual re-activation is required after a fault. Remote control opening and closing are deactivated. |
Nota: After the "LOCK" lock is activated, the circuit breaker cannot be closed to protect electrical safety and prevent accidental contact.
Pantalla digital de 6.2 LED
The integrated LED display provides visual feedback on the device's status and operational counts.
| Modo | Indicación LED |
|---|---|
| Modo automático | Red flashing indicates opening; Green flashing indicates closing. |
| Modo MANÚ | 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:
- Primera falta: 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. Mantenimiento
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.
- Asegúrese de que todas las conexiones de los terminales permanezcan firmes.
- Periodically test the RCCB functionality according to local regulations (e.g., using the 'Test Monthly' button if available).
- Mantenga el dispositivo libre de polvo y humedad.
8. Solución de problemas
Si el disyuntor no funciona como se espera, considere lo siguiente:
- 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: Verifique la fuente de alimentación del dispositivo.
- 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. Aplicación
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
- Ascensores
- Smart homes
- Fábricas inteligentes
- New energy vehicle charging piles
Importante: It cannot be used for individual photovoltaic systems.

Image 9.1: Various application scenarios for the DEWIN Automatic Recloser RCCB Circuit Breaker.
10. Garantía y soporte
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.