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Havells 63A 4P 100mA ELCB (DHRGCRFF100063) –

The Havells DHRGCRFF100063 is a 63A 4P (4P) voltage operated ELCB specifically engineered for residential safety. This device acts as a primary earth leakage monitor, triggering an immediate disconnect when it senses a 100mA residual current. It is installed at the main incomer to provide total system isolation during fault conditions.

Quick Answer

Absolutely, if you're seeking robust primary earth leakage protection for a standard Indian residential setup. The Havells DHRGCRFF100063, with its 100mA sensitivity, is ideal for fire prevention by monitoring the main incomer. Its 630A making/breaking capacity ensures reliable operation against high inrush currents, making it a dependable choice for comprehensive household electrical safety.

✓Rapid fire hazard mitigation — the 100mA sensitivity triggers a shutdown in ≤300ms.
✓10kA conditional short circuit rating ensures the device survives high-energy electrical faults.
✓Efficient residential design — the 4-module width fits standard 35mm DIN rail distribution boards.
✓2kV surge withstand capability protects the internal 50 Hz mechanism from transient spikes.
✓Durable mechanical components — tested for 10,000 cycles to ensure decades of reliable operation.
✓UL94 V 0 flammability rating means the halogen-free housing self-extinguishes to prevent flame spread.

Opt for the Havells DHRGCRFF100063 if prioritizing main incomer fire protection in an Indian home, benefiting from its 100mA sensitivity and 630A capacity. Avoid if needing personal shock protection, as this ELCB isn't designed for the 30mA sensitivity required for direct human safety, or if seeking a combined MCB/ELCB unit.

Product Overview
The Havells DHRGCRFF100063 is a 63A 4P (4P) voltage operated ELCB specifically engineered for residential safety. This device acts as a primary earth leakage monitor, triggering an immediate disconnect when it senses a 100mA residual current. It is installed at the main incomer to provide total system isolation during fault conditions.

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Engineering Analysis
The 100mA sensitivity level is specifically chosen to provide a balance between preventing electrical fires and avoiding nuisance tripping in residential circuits. A 630A making and breaking capacity allows the device to safely handle the high inrush currents typical of domestic appliance startups. The 4P configuration is essential for 240V systems as it switches the neutral line to ensure zero potential on all load-side conductors during a trip.

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