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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

Absolutely, the ABB FW204 is a crucial investment if you require a high-reliability 4-pole RCCB for your residential main incomer in India. Its 300mA sensitivity is specifically engineered for fire prevention, quickly detecting earth leakages that could ignite building materials. Coupled with a 10kA breaking capacity, this device provides robust, instantaneous protection, ensuring maximum safety for your property and family.

✓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.

Choose the ABB FW204 if your priority is critical fire prevention for your residential main incomer, especially where high fault levels are possible. Avoid this specific model if you require lower sensitivity (e.g., 30mA) for direct personal shock protection, as its 300mA trip is solely for fire safety and equipment protection.

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