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

The Legrand DX3 RCCB FP 40A 100mA is a four-pole current-operated safety device designed specifically for residential main incomer applications. This 40A RCCB provides critical Type AC earth leakage protection by monitoring the balance of current between conductors to prevent fire hazards.

Quick Answer

Absolutely, the Legrand DX3 4P 40A 100mA RCCB is a smart investment for comprehensive residential safety. Its 100mA sensitivity is specifically engineered for fire prevention, interrupting circuits rapidly to protect your property from heat-induced damage. Choose this model for robust Type AC earth leakage protection at your main incomer, ensuring peace of mind against electrical hazards in Indian homes.

✓Guards against residential fire hazards — 100mA sensitivity trips in ≤300ms
✓10kA breaking capacity — ensures the device handles high fault currents safely
✓Prevents false tripping from minor surges — 2kV surge withstand rating included
✓850°C glow wire test rating — housing material remains fire-retardant under extreme heat
✓Long-term mechanical reliability — tested for 10,000 operation cycles
✓IP20 degree protection — prevents accidental contact with live internal components

This Legrand DX3 4P 40A 100mA RCCB is perfect for fire protection at Indian residential main incomers. Buy if property safety from leakage current is key. Avoid if you need 30mA shock protection or Type A for pulsating DC faults.

Product Overview
The Legrand DX3 RCCB FP 40A 100mA is a four-pole current-operated safety device designed specifically for residential main incomer applications. This 40A RCCB provides critical Type AC earth leakage protection by monitoring the balance of current between conductors to prevent fire hazards.

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Engineering Analysis
The 100mA sensitivity is engineered for fire protection, as it interrupts the circuit within 300ms before leakage currents can generate sufficient heat to ignite building materials. Featuring a 10kA breaking capacity and a 400A making/breaking capacity, this unit ensures robust performance during high-fault conditions at the main distribution point. The 4P configuration incorporates a switched neutral, ensuring that the neutral line is disconnected simultaneously with the phases for complete fault clearance.

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