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ABB 4P 40A 30mA RCCB (FW204 40A-30mA) – Residential

The ABB FW204 40A-30mA is a 4-pole (4P) Residual Current Circuit Breaker specifically engineered for 400V residential electrical systems. Functioning as a main incomer, this 40A rated device monitors the 50 Hz current balance to provide dedicated earth leakage protection against sinusoidal alternating currents (Type AC).

Quick Answer

Yes, the ABB FW204 40A-30mA RCCB is a vital purchase for homeowners in India prioritizing electrical safety. Its 30mA sensitivity provides life-saving earth leakage protection against dangerous shocks, perfect for main incomer applications in 400V residential setups. Invest in this reliable ABB device for robust prevention against fatal electrical accidents, especially when coordinated with an MCB.

✓Protects residents from cardiac arrest — 30mA sensitivity trips the power in ≤300ms during a leakage event.
✓10kA conditional short circuit rating — provides high-level resilience against massive grid-side faults at the incomer.
✓Decades of reliable operation — rated for 10,000 mechanical endurance cycles to ensure the safety mechanism never sticks.
✓4kV impulse withstand capability — protects sensitive internal components from atmospheric voltage surges and spikes.
✓Low heat generation in panels — minimizes energy waste with a low power loss of only 1.5W per pole.
✓Compliance with Indian safety codes — certified to IS 12640 1 and IS 12640 2 standards for residential building use.

Homeowners seeking comprehensive 400V earth leakage protection for their Indian residences should confidently choose the ABB FW204 40A-30mA RCCB. Avoid if you require a lower current rating or an RCBO for overcurrent protection, as this unit specializes solely in critical 30mA leakage sensing at the main distribution point.

Product Overview
The ABB FW204 40A-30mA is a 4-pole (4P) Residual Current Circuit Breaker specifically engineered for 400V residential electrical systems. Functioning as a main incomer, this 40A rated device monitors the 50 Hz current balance to provide dedicated earth leakage protection against sinusoidal alternating currents (Type AC).

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Engineering Analysis
The 30 mA sensitivity level is essential for domestic safety as it responds to leakage current levels well below the threshold of cardiac fibrillation. A 10 kA breaking capacity provides robust protection at the main distribution point when coordinated with a backup MCB, while the 4P solid neutral design ensures total isolation of all active conductors across its 72mm width.

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