1. Introdución
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Legrand 400408 Tetrapolar Modular Distributor 125A. Please read this manual thoroughly before attempting any installation or operation to ensure proper use and to prevent potential hazards.
1.1 Información de seguridade
AVISO: Electrical work should only be performed by qualified and authorized personnel. Failure to follow these instructions can result in serious injury, death, or property damage.
- Always disconnect power at the main circuit breaker before installing, servicing, or removing the distributor.
- Verify that all connections are secure and correctly polarized before restoring power.
- Ensure that the product is installed in an environment free from excessive moisture, dust, or corrosive substances.
- Cumpra todos os códigos e regulamentos eléctricos locais e nacionais.
2. Produto rematadoview
The Legrand 400408 is a robust tetrapolar modular distributor designed for efficient and organized electrical power distribution within a circuit breaker panel. It is rated for 125 Amps and features 6 modules with 10 connection points (starts), making it suitable for various electrical configurations.

Figure 1: Legrand 400408 Tetrapolar Modular Distributor. This image shows the compact design and connection terminals of the distributor unit.
2.1 Características principais
- Tetrapolar Design: Supports four-pole electrical systems.
- Modular: Accommodates 6 modules for flexible integration.
- Clasificación de alta corrente: Valorado para 125 Amps.
- Multiple Connection Points: Provides 10 starts for various circuits.
- Montaxe en carril DIN: Easy and secure installation on standard DIN rails.
- Material duradeiro: Constructed from polyethylene for reliability.
- Compatibilidade versátil: Suitable for S-type switches, 1-3 phase meters, and drivers.
- Perforated Mounting Rail: Facilita opcións de montaxe flexibles.
- Selado hermético: Ensures protection within the enclosure.
3. Contido do paquete
Upon unpacking, please verify that all components are present and undamaged. The package typically includes:
- 1 x Legrand 400408 Tetrapolar Modular Distributor 125A
- Necessary mounting hardware (e.g., screws, clips for DIN rail)
Se falta algún artigo ou está danado, póñase en contacto co seu provedor inmediatamente.
4. Configuración e instalación
Installation must be carried out by a qualified electrician in accordance with all applicable electrical codes and safety standards.
4.1 Montaxe
- Ensure the main power supply to the electrical panel is completely disconnected and locked out.
- Identify a suitable location within the electrical panel for the distributor, typically on a DIN rail.
- Attach the distributor securely to the DIN rail using its integrated mounting mechanism. Ensure it clicks firmly into place.
- If using the perforated mounting rail, secure the distributor using appropriate screws or fasteners.
4.2 Cableado
- Connect the incoming tetrapolar (four-pole) power supply cables to the main input terminals of the distributor. Ensure correct phase (L1, L2, L3) and neutral (N) connections.
- Connect the outgoing circuit cables (up to 10 starts) to the respective output terminals. Ensure each connection is tight and secure.
- Verify all connections for proper polarity and tightness to prevent loose connections, which can cause overheating or electrical faults.
- Once all wiring is complete, double-check all connections before restoring power.
5. Funcionamento
The Legrand 400408 Tetrapolar Modular Distributor functions as a central point for distributing electrical power to multiple circuits within an electrical panel. It does not have active operational controls but facilitates the organized connection of various modular devices.
5.1 Module Integration
The distributor is designed to integrate seamlessly with other modular devices such as S-type switches, 1-3 phase meters, and drivers. These devices can be mounted on the same DIN rail and connected to the distributor's output terminals to create a comprehensive electrical distribution system.
- Ensure that any connected modular devices are compatible with the distributor's voltage clasificacións actuais.
- Follow the installation instructions provided with each modular device for proper connection to the distributor.
6. Mantemento
Regular maintenance ensures the longevity and safe operation of your Legrand distributor. Always disconnect power before performing any maintenance.
- Inspección periódica: Annually inspect the distributor and its connections for any signs of wear, corrosion, or loose terminals.
- Limpeza: Use a dry, lint-free cloth to gently clean the exterior of the distributor. Do not use abrasive cleaners or solvents.
- Verificación profesional: It is recommended to have a qualified electrician perform a thorough inspection and maintenance check periodically, especially in industrial or high-demand environments.
7 Solución de problemas
This section addresses common issues that may arise. For problems not listed here, contact Legrand customer support or a qualified electrician.
| Problema | Causa posible | Solución |
|---|---|---|
| No power to connected circuits | Main power supply off; Loose input connection; Faulty upstream breaker. | Check main power supply; Verify input terminal connections; Inspect and reset upstream circuit breakers. |
| Overheating at terminals | Loose connections; Overload on a circuit; Incorrect wire gauge. | Disconnect power and tighten all terminal screws; Reduce load on the affected circuit; Ensure correct wire gauge for the current. |
| Difficulty mounting on DIN rail | Incorrect DIN rail size; Obstruction. | Ensure standard DIN rail is used; Clear any obstructions; Apply firm, even pressure to snap into place. |
8. Especificacións técnicas
| Especificación | Valor |
|---|---|
| Marca | Legrand |
| Número de modelo | 400408 |
| Valoración actual | 125 Amps |
| Number Of Contacts | 10 |
| Tipo de montaxe | Montaxe sobre carril DIN |
| Material | Polietileno |
| Cor | Azul |
| Voltage | 230 voltios (CA) |
| Número de polos | 6 |
| Especificación Met | CE |
| Fabricante | LEGRAND |
| Peso do elemento | 8.8 onzas |
9. Garantía e soporte
9.1 Información da garantía
This Legrand product is covered by the manufacturer's standard warranty. Please refer to the official Legrand websitio web ou póñase en contacto co seu punto de venda para obter información detallada sobre os termos e condicións da garantía.
9.2 Atención ao cliente
For technical assistance, product inquiries, or support, please contact Legrand customer service through their official website or the contact information provided with your purchase. When contacting support, please have your product model number (400408) and purchase details readily available.





