1. Introducció
This manual provides essential information for the safe and effective installation, operation, and maintenance of your Legrand DNX 4500 Circuit Breaker. This device is designed for the protection of your electrical installation, ensuring safety and reliability. Please read this manual thoroughly before proceeding with any installation or operation.
The Legrand DNX 4500 is a Uni + Neutral 230 V circuit breaker with a 4.5 kA breaking capacity, suitable for various electrical panel applications. It is compatible with Legrand Drivia electrical panels and horizontal combs, conforming to the NF EN 60898-1 standard.
2. Informació de seguretat
ADVERTIMENT: Electrical work should only be performed by qualified and authorized personnel. Failure to follow these safety instructions can result in electric shock, fire, serious injury, or death.
- Always disconnect power at the main service panel before installing, servicing, or removing the circuit breaker.
- Utilitzeu l'equip de protecció individual (EPI) adequat, com ara guants aïllants i ulleres de seguretat.
- Assegureu-vos que totes les connexions del cablejat siguin segures i que compleixin amb els codis elèctrics locals i nacionals.
- No feu servir l'interruptor si sembla que està danyat.
- Comproveu el voltage and current ratings of the circuit breaker match your application requirements.
- This device is designed for indoor use in dry locations unless otherwise specified.
3. Producte acabatview
The Legrand DNX 4500 Circuit Breaker (Model LEG406773) is a miniature circuit breaker designed for overcurrent protection in electrical circuits. Key features include:
- Uni + Neutral 230 V: Designed for single-phase circuits with neutral.
- DNX² 4500 - 4.5 kA: Indicates a breaking capacity of 4.5 kiloamperes.
- Valoració actual: 10 Amps.
- Tipus de connexió: Supports screw/screw and car/car connections for versatile installation.
- Feed Controls: Integrated controls for managing power flow.
- Compatibilitat: Compatible with Legrand Drivia electrical panels and horizontal combs.
- Certificació: Conforms to NF EN 60898-1 standard.

Figura 1: Frontal view of the Legrand DNX 4500 Circuit Breaker. This image shows the grey casing, the toggle switch for operation, and the branding.
4. Configuració i instal·lació
Installation of the Legrand DNX 4500 Circuit Breaker must be performed by a qualified electrician in accordance with all applicable electrical codes and standards.
- Desconnexió d'alimentació: Before beginning any work, ensure that the main power supply to the electrical panel is completely disconnected and locked out.
- Muntatge: The circuit breaker is designed for panel mounting. Securely attach the breaker to the DIN rail within the electrical panel.
- Connexions de cablejat:
- Connect the incoming phase (Uni) and neutral (N) wires to the designated terminals.
- Connecteu els cables de càrrega de sortida als terminals corresponents.
- Ensure all screw terminals are tightened to the manufacturer's specified torque to prevent loose connections and overheating.
- The circuit breaker supports both screw/screw and car/car connection types.
- Comprovació de compatibilitat: Ensure compatibility with Legrand Drivia electrical panels and horizontal combs for proper integration.
- Verificació: After installation, double-check all connections and ensure the breaker is securely mounted.
- Restauració d'energia: Once installation is complete and verified, restore power to the main service panel.
5. Instruccions de funcionament
The Legrand DNX 4500 Circuit Breaker operates as a protective device for your electrical circuits.
- Posició ON: To energize the circuit, push the toggle switch to the "ON" position (typically upwards).
- Posició OFF: To de-energize the circuit, push the toggle switch to the "OFF" position (typically downwards).
- Posició disparada: If an overcurrent or short circuit occurs, the circuit breaker will automatically trip to an intermediate position (often center or fully down, depending on the model) to protect the circuit.
- Reinici d'un interruptor automàtic disparat:
- Primer, identifiqueu i corregiu la causa del desconnexió (per exemple, desendolleu els electrodomèstics sobrecarregats, arregleu els curtcircuits).
- Premeu fermament l'interruptor de palanca a la posició "OFF".
- Then, push the toggle switch to the "ON" position to restore power.
- If the breaker trips immediately again, do not attempt to reset it repeatedly. Consult a qualified electrician.
6. Manteniment
The Legrand DNX 4500 Circuit Breaker is designed for long-term, reliable operation with minimal maintenance. However, periodic checks are recommended:
- Inspecció visual: Inspeccioneu periòdicament l'interruptor automàtic per detectar qualsevol signe de danys físics, decoloració o connexions soltes.
- Neteja: Keep the area around the circuit breaker clean and free from dust and debris. Use a dry, soft cloth for cleaning; never use liquids.
- Inspecció professional: It is advisable to have your electrical system, including circuit breakers, inspected by a qualified electrician periodically (e.g., every 5-10 years) to ensure continued safe operation.
- No ho facisamper: Never attempt to open or repair the circuit breaker yourself. Refer all servicing to qualified personnel.
7. Solució De Problemes
If you encounter issues with your Legrand DNX 4500 Circuit Breaker, consider the following common scenarios:
- Freqüència de salts de l'interruptor:
- Sobrecàrrega: The circuit may be drawing too much current. Unplug some devices from the circuit.
- Curtcircuit: A direct connection between live and neutral/ground wires. This requires immediate investigation by an electrician.
- Aparell defectuós: An appliance connected to the circuit may be defective. Try isolating appliances to identify the culprit.
- L'interruptor no es reinicia:
- Assegureu-vos que la causa del viatge s'ha resolt.
- Push the switch firmly to the "OFF" position before attempting to reset to "ON".
- If it still doesn't reset, the breaker itself might be faulty, or there's a persistent fault in the circuit. Do not force it; consult an electrician.
- Sense alimentació al circuit (interruptor activat):
- Check if other breakers in the panel are tripped.
- Verify main power supply to the panel.
- Inspect wiring connections for looseness or damage (with power off).
- If all checks fail, the breaker may be defective.
For persistent issues or if you are unsure, always contact a qualified electrician.
8. Especificacions
| Característica | Especificació |
|---|---|
| Marca | Legrand |
| Número de model | LEG406773 |
| Valoració actual | 10 Amps |
| Voltage | 230 Volts |
| Tipus d'interruptor | Standard (Miniature Circuit Breaker) |
| Capacitat de ruptura | 4.5 kA |
| Nombre de pols | 1 (Uni + Neutral) |
| Tipus de muntatge | Panel Mount (DIN rail compatible) |
| Tipus de connexió | Screw/Screw, Car/Car |
| Color | Gris |
| Material | Poliamida-imida |
| Pes de l'article | 3.52 unces |
| Certificació | NF EN 60898-1 |
| UPC | 793518542826 |
9. Garantia i Suport
Legrand products are manufactured to high-quality standards. For specific warranty information, please refer to the documentation provided with your purchase or visit the official Legrand weblloc.
For technical support, product inquiries, or assistance with installation, please contact Legrand customer service or your local authorized distributor. Contact information can typically be found on the official Legrand weblloc: www.legrand.com





