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Answer Posted / sms
RCBO Protects against any residual Current/Earth Leakage
current in the ckt, is more than its rated sensitivity say
30 mA/100mA. Also its protect against any short ckt.
One more thing , RCBO, ELCB, RCCB or GFCI ,All are same.
Where as MCB protect against only Short ckt current more
than its rating.
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