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Havells 2P 40A 30mA RCCB (DHRGCTDF030040) – Residential

The Havells DHRGCTDF030040 is a 2P 40A Residual Current Circuit Breaker designed for high-sensitivity earth leakage detection in 240V residential applications. This current-operated device monitors for 30mA imbalances to ensure instantaneous tripping during ground faults. It provides essential protection for final circuits when mounted on a standard 35mm DIN rail.

Quick Answer

You absolutely should consider the Havells DHRGCTDF030040 if prioritizing ultimate electrical safety in your residential property. This 2P 40A RCCB with a 30mA trip sensitivity is the global benchmark for protecting human life from lethal electric shocks, disconnecting circuits faster than ventricular fibrillation can occur. It's a critical upgrade for any 240V Indian home seeking robust ground fault protection.

✓Saves lives during direct contact — 30mA high sensitivity triggers a shutdown in ≤300ms at 1x Idn.
✓Rated current of 40A — handles standard household continuous loads across a 180–260V range.
✓Reduces internal heat and power waste — Energy Limiting Class 1 performance limits power loss to 1.5W per pole.
✓Tested for extreme thermal stress — fire-retardant housing passes 850°C glow wire testing.
✓Ensures long-term mechanical reliability — rated for 10,000 mechanical cycles and 4,000 electrical cycles.
✓Halogen-free and RoHS compliant — prevents the release of toxic gases during overloads for a safer indoor environment.

This Havells 2P 40A 30mA RCCB is essential for Indian homeowners prioritizing human safety in 240V residential circuits. It’s a must-buy for robust ground fault protection. Avoid only if your application demands different pole counts or specialized industrial leakage thresholds.

Product Overview
The Havells DHRGCTDF030040 is a 2P 40A Residual Current Circuit Breaker designed for high-sensitivity earth leakage detection in 240V residential applications. This current-operated device monitors for 30mA imbalances to ensure instantaneous tripping during ground faults. It provides essential protection for final circuits when mounted on a standard 35mm DIN rail.

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Engineering Analysis
The 30mA tripping threshold is the global safety benchmark for human life protection because it disconnects the circuit before ventricular fibrillation occurs. A 10kA conditional short circuit rating ensures the unit maintains structural integrity during massive downstream faults when coordinated with an upstream MCB. The 2P solid neutral configuration allows for total isolation of the 50 Hz supply during a leakage event.

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