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Legrand 4P 16A 100mA RCBO (DX3) – Residential

The Legrand DX3 RCBO 16A 100mA is a 4P (four-pole) integrated safety device designed for 415V residential final circuits. It provides comprehensive protection against earth leakage, overloads, and short circuits in a compact 72mm width module. This BIS-marked device is essential for modern Indian homes requiring high-breaking capacity protection at the main distribution point.

Quick Answer

Yes, you should absolutely buy the Legrand DX3 4P 16A 100mA RCBO if you need advanced fire protection and comprehensive circuit safety for your 415V Indian residential setup. Its 100mA sensitivity proactively detects fire-risk earth leakages, while simultaneously guarding against overloads and short circuits. Ideal for main distribution boards where high breaking capacity and surge resilience are non-negotiable for modern multi-phase homes.

✓Safeguards property from fire hazards — 100mA sensitivity trips instantaneously within ≤300ms.
✓16A rated current manages standard household loads without nuisance tripping.
✓Protects against massive grid surges — 10kA breaking capacity and 4kV impulse withstand.
✓10,000 mechanical cycles provide long-term reliability for residential installations.
✓Eliminates separate hardware costs — integrated RCBO functionality requires no backup MCB.
✓Halogen-free and RoHS compliant construction ensures safe operation up to +40°C.

This Legrand RCBO is essential for homeowners, electricians, and builders seeking robust, BIS-marked fire and circuit protection for 415V Indian residential mains. It's not suited for applications requiring lower trip sensitivities like personal shock protection (e.g., 30mA for bathrooms). Choose for superior fire safety at your main panel.

Product Overview
The Legrand DX3 RCBO 16A 100mA is a 4P (four-pole) integrated safety device designed for 415V residential final circuits. It provides comprehensive protection against earth leakage, overloads, and short circuits in a compact 72mm width module. This BIS-marked device is essential for modern Indian homes requiring high-breaking capacity protection at the main distribution point.

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Engineering Analysis
The 100mA sensitivity level is specifically engineered for fire protection, as it detects leakage current levels that can cause combustion in building materials. Its 10kA breaking capacity and 4kV impulse withstand voltage allow it to survive significant transient surges common in Indian residential grids. The 4P configuration ensures a switched neutral, providing total electrical isolation during a fault event.

Technical Support & FAQs