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Havells 4P 63A 30mA ELCB (DHRGCRFF030063) – Home

The Havells DHRGCRFF030063 is a 63A 4P voltage-operated ELCB designed specifically for residential main incomer applications. It provides high-sensitivity 30mA earth leakage protection in a 72mm wide 4-module frame to prevent electrical fire and shock hazards. This Indian-made device is calibrated for 240V systems and ensures immediate disconnection when leakage is detected.

Quick Answer

Yes, the Havells DHRGCRFF030063 is a vital purchase for residential main incomer safety. Its 30mA high-sensitivity ensures incredibly fast ≤40ms tripping, crucial for preventing severe electric shocks and fires in 240V Indian homes, protecting against respiratory paralysis. The robust 10kA breaking capacity guarantees the ELCB's integrity, providing reliable and immediate disconnection.

✓Stops lethal electrical accidents instantly — 30mA sensitivity provides immediate protection against earth leakage.
✓High-performance fault handling with a 10kA breaking capacity that manages massive short-circuit surges safely.
✓Safeguards against high-voltage spikes — 4kV impulse withstand voltage ensures durability during lightning or grid fluctuations.
✓Terminal capacity up to 25mm² allows for secure connection of heavy-duty rigid incoming cables.
✓Energy-efficient design keeps your panel cool — power loss is restricted to just 2W per pole during operation.
✓Trips in less than 300ms at rated residual current to prevent prolonged exposure to dangerous electricity.

The Havells DHRGCRFF030063 ELCB is essential for Indian homeowners needing 30mA earth leakage protection for 240V residential main incomers, preventing shocks and fires. It lacks overload/short-circuit protection; integrate supplementary MCBs for complete defense, as this unit focuses solely on earth faults.

Product Overview
The Havells DHRGCRFF030063 is a 63A 4P voltage-operated ELCB designed specifically for residential main incomer applications. It provides high-sensitivity 30mA earth leakage protection in a 72mm wide 4-module frame to prevent electrical fire and shock hazards. This Indian-made device is calibrated for 240V systems and ensures immediate disconnection when leakage is detected.

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Engineering Analysis
The 30mA sensitivity rating is essential for residential environments as it trips in ≤40ms during high-leakage events, which is faster than the human body's threshold for respiratory paralysis. A 10kA breaking capacity ensures the device remains intact after interrupting significant fault currents at the main panel. The 4P pole configuration provides a switched neutral, which is vital for preventing voltage back-feed through the neutral line during a fault.

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