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Legrand 4P 63A 100mA ELCB (DX3) – Residential

The Legrand DX3 ELCB 4P 63A 100mA is a dedicated voltage-operated earth leakage circuit breaker engineered for residential main incomer protection. This 4-pole device manages a 63A load while monitoring for 100mA earth leakages to provide essential fire safety in 415V electrical systems.

Quick Answer

Absolutely, if your primary concern is robust fire safety from earth leakage currents in your 415V Indian residential main supply. The Legrand DX3 4P 63A 100mA ELCB is specifically engineered to detect and interrupt dangerous 100mA leaks, preventing heat buildup that standard MCBs miss. This dedicated protection is crucial for safeguarding property and lives from electrical fires.

✓Mitigates residential fire risks — 100mA sensitivity detects leakages before they ignite.
✓Rated current of 63A — manages entire floor or bungalow loads on 415V networks.
✓Rapid fault isolation — trips within ≤300ms at 1x Idn for immediate safety.
✓10kA conditional short circuit rating — provides robust endurance against high-energy fault currents.
✓Compact 4-module design — fits 72mm width spaces on standard 35mm DIN rails.
✓BIS certified safety — complies with IS 12640 standards for Indian residential safety.
✓Durable terminal design — accepts rigid cables up to 35 mm² for secure connectivity.

Choose the Legrand DX3 ELCB for dedicated 100mA earth leakage fire protection for your 415V residential main incomer, preventing heat buildup from dangerous leaks. It's not for personal shock protection (requires 30mA RCCB) or general overload/short-circuit breaking; its specific role is fire prevention.

Product Overview
The Legrand DX3 ELCB 4P 63A 100mA is a dedicated voltage-operated earth leakage circuit breaker engineered for residential main incomer protection. This 4-pole device manages a 63A load while monitoring for 100mA earth leakages to provide essential fire safety in 415V electrical systems.

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Engineering Analysis
The 100mA sensitivity (Type AC) is a critical threshold for fire prevention, as it stops leakage currents that generate heat without triggering standard breakers. With a 630A making and breaking capacity, the device maintains structural integrity during fault connection, while the 10kA conditional short circuit rating ensures safety when coordinated with upstream MCBs.

Technical Support & FAQs