FatafatService Logo
No Image Available

Legrand 4P 40A 100mA RCCB (DX3 HPI) – Residential

The Legrand DX3 RCCB HPI FP 40A 100mA is a four-pole residual current circuit breaker designed for 400V residential applications. This Type A device installs as a main incomer to detect earth leakage and disconnect the circuit to prevent fire hazards. It operates at 50 Hz and provides reliable protection against current imbalances in three-phase systems.

Quick Answer

Yes, you should absolutely buy the Legrand DX3 HPI 4P 40A 100mA RCCB if robust fire protection for your Indian residential three-phase electrical system is paramount. Its precise 100mA sensitivity is expertly tuned to detect dangerous earth leakages that can cause fires, without the nuisance tripping common in lower sensitivity units. This device ensures critical safety and peace of mind for multi-phase distribution boards, making it an indispensable investment for modern homes.

✓Safeguards against fire-causing leakage current with a 100mA Type A tripping threshold.
✓Rugged 10kA conditional short circuit rating ensures durability during downstream fault events.
✓Maintains power integrity during voltage spikes via 4kV impulse withstand capability.
✓Compact 4-module design with 72mm width simplifies installation on standard 35mm DIN rails.
✓Extends system longevity with a mechanical endurance rated for 10,000 operation cycles.
✓Full compliance with IS 12640 1 and IS 12640 2 standards for Indian residential safety.

Opt for this Legrand RCCB if your Indian home requires dedicated 100mA fire protection for a 40A, three-phase main incomer, safeguarding against serious earth leakage hazards. Avoid if your primary need is personal shock protection (requiring 30mA), or for single-phase systems, where a different device would be more appropriate.

Product Overview
The Legrand DX3 RCCB HPI FP 40A 100mA is a four-pole residual current circuit breaker designed for 400V residential applications. This Type A device installs as a main incomer to detect earth leakage and disconnect the circuit to prevent fire hazards. It operates at 50 Hz and provides reliable protection against current imbalances in three-phase systems.

Related Products

Engineering Analysis
A 100mA sensitivity level is specifically chosen for fire protection in residential distribution, as it detects leakage levels that could ignite materials without the nuisance tripping common in 30mA units. The 630A making and breaking capacity ensures the device can safely handle transient switching loads at the main incomer position. Using 4 poles (4P) provides complete isolation of all phases and the neutral line for comprehensive system safety.

Technical Support & FAQs