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MCBs protect wiring while RCCBs protect people from electric shock?

checkthis · automated fact-check · How we check · Reel by @dr_siddhant_gudhe

The Reel's claims about MCBs, RCCBs, and monthly button testing are accurate and supported by electrical safety standards and guides. Standard MCBs are designed to protect electrical cables from overheating due to overloads or short circuits, not to detect low leakage currents. RCCBs detect current leaks as low as 30mA and disconnect power within milliseconds to protect individuals from fatal shocks. Technical guides from Schneider Electric and Studiomatrx recommend testing RCCBs monthly using their built-in test button to ensure proper operation.

The Reel we checked▶

The Reel we checked

@dr_siddhant_gudhe

Aapke ghar mein RCCB hai? MCB wire ko bachata hai, aapko nahi. Ghar walon ko zaroor bhejo. #ElectricalSafety #MCB #RCCB #HomeSafety #ElectricShock

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What we checked

An MCB protects wires from burning by tripping at high currents like sixteen amperes, but will not protect a human from a shock caused by lower leakage currents.“An MCB is a resettable circuit breaker that primarily protects circuit conductors against overload and short-circuit overcurrent.”July 2025 - VIOX Electric + 1 more
An RCCB or ELCB detects current imbalances as low as thirty milliamperes and cuts off power quickly to prevent electric shock fatalities.“RCCB (Residual Current Circuit Breaker) protects people and catches earth leakage - it detects current leaking to earth (through a fault, damaged insulation or a person) and cuts the supply in millise”Electrical Fire Safety in India (2026): Overloads, Wiring and the Right Protection — Why electrical faults cause so many Indian building fires, and the fix: correct cable sizing and a properly designed board by a licensed electrician, MCB plus RCCB protection, no overloading, and never water on a live fire. | Studio Matrx + 1 more

Short version

✅ TRUE 👉 The Reel's claims about MCBs, RCCBs, and monthly button testing are accurate and supported by electrical safety standards and guides. 👉 Technical guides from Schneider Electric and Studiomatrx recommend testing RCCBs monthly using their built-in test button to ensure proper operation. 📰 Sources: Viox, Panasonic 🔎 Full check: send this Reel to @checkthis.chat

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