Legrand Disconnector - DX3 - 406490
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Product Information
Full details
This Legrand LEXIC DX3-IS 406490 switch-disconnector is designed for electrical professionals needing a robust main and safety switch. Its key benefit is reliable operation with a maximum rated operating voltage of 400V and a continuous current of 125A. A potential caveat is its specific application as a charge separator, requiring understanding of its intended electrical context. This device offers essential circuit protection and isolation capabilities.
All features
| Series | LEXIC DX3-IS |
|---|---|
| Model Part Number | 406490 |
| Brand | Legrand |
Extended Product Information
FAQs
What is the primary function of the Legrand LEXIC DX3-IS 406490?
It functions as a main switch and a safety switch, designed for isolating electrical circuits and specifically as a charge separator.
What is the maximum voltage this disconnector can handle?
The maximum rated operating voltage (Ue) is 400V.
What is the continuous current rating?
The rated continuous current (Iu) is 125A, and it is also rated for AC-21 applications at 400V with 125A.
Can this disconnector be used for overload protection?
No, this is a switch-disconnector, not a circuit breaker. It provides isolation but does not offer inherent overload or short-circuit protection.
What does 'charge separator' mean in this context?
It means the switch is designed to safely disconnect and isolate circuits that may have stored electrical energy, such as in capacitor banks or battery systems.
What is the allowable short-time current (Icw)?
The allowable short-time current is 0.75kA.
Who should install this product?
Installation should only be performed by a qualified and licensed electrician following all relevant safety regulations and codes.
Troubleshooting
Disconnector not switching smoothly
Ensure the installation environment is clean and free of debris. Check for any physical obstructions. If the issue persists, the unit may require replacement by a qualified professional.
Overheating at terminals
Verify that the connected wires are adequately sized for the 125A current. Ensure all terminal connections are tightened to the recommended torque specification. If overheating continues, consult a qualified electrician.
Unit does not fully disconnect power
Confirm that the disconnector is rated for the circuit's voltage and current. Check for any internal damage or wear. If the issue is not apparent, professional inspection and potential replacement are necessary.
Pros and Cons
Pros
- Reliable main and safety switch functionality.
- High current carrying capacity for demanding applications.
- Designed for secure isolation and charge separation.
- Durable construction from Legrand, a reputable brand.
- Clear voltage and current ratings for easy integration.
Cons
- Specific application as a charge separator may require specialized knowledge.
- Limited information on advanced features or smart capabilities.
- No mention of integrated protection against overloads or short circuits (standard for disconnectors).
- Short-time withstand current (0.75kA) might be insufficient for very high fault current scenarios without upstream protection.
Setup, Compatibility & Care
Setup: Installation should be performed by a qualified electrician following local electrical codes and the manufacturer's guidelines. Ensure the power source is completely de-energized before attempting any wiring.
Compatibility: This disconnector is designed for AC circuits with a maximum operating voltage of 400V and a continuous current rating of 125A. It is compatible with standard electrical enclosures and busbar systems designed for DIN rail mounting, typical for LEXIC DX3 components. Verify compatibility with existing electrical infrastructure before installation.
Care: Regular inspection for signs of wear, damage, or overheating is recommended. Keep the unit clean and free from dust and debris. Ensure all connections remain tight. Maintenance should only be performed when the circuit is de-energized.