1. Konec produktuview
This manual provides essential information for the safe installation, operation, and maintenance of the Generic YENCONG914 Miniature Circuit Breaker. This device is designed for overload and short-circuit protection in AC 230V electrical circuits, featuring a 1-pole + neutral configuration and a 40A current rating, suitable for DIN rail mounting.
2. Bezpečnostní informace
WARNING: Electrical shock hazard. Installation and maintenance should only be performed by qualified personnel. Always disconnect power before working on electrical circuits.
- Ensure the main power supply is disconnected before installation or servicing.
- Ověřte, zda specifikace jističe (sv.tage, current) match the requirements of your electrical system.
- Neobsluhujte jistič mokrýma rukama.
- Regularly test the circuit breaker as instructed in the maintenance section.
- This device is intended for indoor use in dry environments.
3. Vlastnosti a komponenty produktu
The YENCONG914 Miniature Circuit Breaker includes several key components for its operation and safety functions.

Image 3.1: Test and Reset Buttons. This image highlights the 'Test' button (yellow) and 'Reset' button (grey) on the circuit breaker. The 'Test' button is used for monthly functional checks, while the 'Reset' button is used to re-engage the breaker after it has tripped. Clear instructions and status indicators are designed for easy understanding.

Image 3.2: Detailed Component View. This image provides a closer look at the circuit breaker's components, including the 'Test' button, 'Reset' button, the blue 'Controller' switch for manual operation, and the 'Indicating window' which shows the breaker's status. The 'Argument' refers to the technical specifications printed on the device.
- Controller (Blue Switch): Používá se k ručnímu zapnutí nebo vypnutí jističe.
- Test Button (Yellow): Initiates a test of the residual current device (RCD) function to ensure it is operating correctly. This should be pressed monthly.
- Reset Button (Grey): Used to reset the circuit breaker after it has tripped due to an overload, short circuit, or earth leakage fault.
- Indicating Window: Displays the operational status of the circuit breaker (e.g., ON/OFF, tripped).
4. Specifikace
The following are the technical specifications for the YENCONG914 Miniature Circuit Breaker:

Obrázek 4.1: Rozměry produktu. This image illustrates the physical dimensions of the circuit breaker, including its width of 66mm (2.6 inches), height of 93mm (3.66 inches), and depth of 54mm (2.13 inches). The rated voltage of AC 230V is also indicated.
| Parametr | Hodnota |
|---|---|
| Model | YENCONG914 |
| Jmenovitý objemtage | AC 230V |
| Jmenovitý proud | 40A |
| Poláci | 1P+N (1 Pole + Neutral) |
| Typ montáže | Montáž na lištu DIN |
| Norma | IEC/EN 61009-1 |
| Residual Current Sensitivity (IΔn) | 30 mA |
| Čas vypnutí | AC 0.1s |
| Šířka | 66 mm (2.6 palce) |
| Výška | 93 mm (3.66 palce) |
| Hloubka | 54 mm (2.13 palce) |
5. Instalace
Installation of this circuit breaker requires adherence to local electrical codes and safety standards. It is strongly recommended that installation be performed by a certified electrician.
- Odpojení napájení: Before beginning any work, ensure the main power supply to the circuit is completely disconnected and locked out to prevent accidental re-energization.
- Montáž: The circuit breaker is designed for DIN rail mounting. Snap the breaker onto the standard 35mm DIN rail securely.
- Zapojení:
- Connect the incoming live (phase) wire to the 'L' terminal and the incoming neutral wire to the 'N' terminal at the top of the breaker.
- Connect the outgoing live (phase) wire to the 'L' terminal and the outgoing neutral wire to the 'N' terminal at the bottom of the breaker.
- Ujistěte se, že všechna připojení jsou pevná a bezpečná, abyste zabránili uvolnění kontaktů a přehřátí.
- Ověření: Dvakrát zkontrolujte správnost a těsnost všech kabelových spojů.
- Obnovení napájení: Jakmile je instalace dokončena a ověřena, obnovte napájení obvodu.
6. Provoz
Operating the YENCONG914 Miniature Circuit Breaker is straightforward:
- Zapínání: Push the blue controller switch upwards to the 'ON' position. The indicating window should show the 'ON' status.
- Vypínání: Push the blue controller switch downwards to the 'OFF' position. The indicating window should show the 'OFF' status.
- Zablokovaný stav: If an overload, short circuit, or earth leakage fault occurs, the breaker will automatically trip to the 'OFF' position. The indicating window will show the tripped status.
- Resetování po cestě: After identifying and resolving the fault that caused the trip, push the blue controller switch fully downwards to reset the internal mechanism, then push it upwards to the 'ON' position. If the breaker trips immediately again, do not force it; investigate the fault further.
7. Údržba
Pravidelná údržba zajišťuje trvalou spolehlivost a bezpečnost vašeho jističe.
- Měsíční test: Press the yellow 'Test' button monthly. The circuit breaker should trip immediately. If it does not trip, the device may be faulty and should be replaced by a qualified electrician. After testing, reset the breaker by pushing the blue controller switch fully down, then up to the 'ON' position.
- Vizuální kontrola: Pravidelně kontrolujte jistič, zda nevykazuje známky fyzického poškození, změny barvy nebo uvolněných spojů.
- Čištění: Ensure the circuit breaker is kept clean and free from dust and debris. Use a dry, soft cloth for cleaning. Do not use liquids or abrasive cleaners.
8. Řešení problémů
If you encounter issues with your circuit breaker, refer to the following troubleshooting guide:
- Časté vypínání jističe:
- Přetížení: Obvod může odebírat příliš mnoho proudu. Odpojte od obvodu některé spotřebiče nebo zařízení.
- Zkrat: A direct connection between live and neutral wires. Inspect wiring and connected devices for damage.
- Earth Leakage Fault: Current is flowing to earth. Check appliances and wiring for insulation breakdown.
- Vadný spotřebič: Disconnect appliances one by one to identify the faulty device.
- Jistič se neresetuje:
- Ensure the fault that caused the trip has been resolved.
- Try pushing the controller switch fully down before attempting to push it up to 'ON'.
- If it still does not reset, the breaker itself may be faulty and requires replacement by a qualified electrician.
- Breaker Does Not Trip During Monthly Test:
- The residual current device (RCD) function may be faulty. The breaker must be replaced immediately by a qualified electrician.
Pokud problémy přetrvávají, obraťte se na kvalifikovaného elektrikáře.
9. Záruka a podpora
Specific warranty information for the Generic YENCONG914 Miniature Circuit Breaker is not provided in the product details. For any support or warranty inquiries, please refer to the retailer or manufacturer from whom the product was purchased.