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ABB 4P 40A 300mA RCCB (FW204) – Residential

The ABB FW204 40A 300mA is a 4-pole (4P) Residual Current Circuit Breaker (RCCB) specifically engineered for residential main incomer applications. This Italian-made safety device operates at 400V to provide instantaneous earth leakage protection, ensuring immediate disconnection when an imbalance is detected.

Quick Answer

You should absolutely buy the ABB FW204 if you're upgrading or installing a new main incomer for a large residential property in India. Its 300mA sensitivity is crucial for robust fire prevention from earth leakages, identifying hazards before they escalate. The 10kA breaking capacity ensures superior protection against high fault currents, providing unparalleled safety and compliance for your electrical system.

✓Protects your home from fire-causing insulation faults — 300mA sensitivity trips the circuit in ≤300ms.
✓10kA breaking capacity provides superior safety against massive current surges at the main distribution board.
✓Lower your electricity bills through reduced heat dissipation — features only 1.5W power loss per pole.
✓4 kV impulse withstand voltage ensures the device remains operational after atmospheric electrical surges.
✓Built for decades of reliable operation — mechanical endurance tested for 10,000 cycles.
✓4P solid neutral configuration ensures comprehensive isolation across all phases in 400V residential systems.

This ABB FW204 RCCB is ideal for homeowners, builders, and electricians prioritizing top-tier fire safety and robust earth leakage protection for main residential incomers in India. Avoid if a lower current rating or general-purpose RCCB suffices, as this model is specifically engineered for critical, high-fault capacity applications.

Product Overview
The ABB FW204 40A 300mA is a 4-pole (4P) Residual Current Circuit Breaker (RCCB) specifically engineered for residential main incomer applications. This Italian-made safety device operates at 400V to provide instantaneous earth leakage protection, ensuring immediate disconnection when an imbalance is detected.

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Engineering Analysis
The 300mA sensitivity level is essential for fire prevention in residential distribution, as it identifies leakage levels that generate enough heat to ignite building materials. With a 10kA breaking capacity, the FW204 safely manages high fault levels at the source of entry, while the 4-module 72mm width ensures standard DIN rail compatibility.

Technical Support & FAQs