CHYT NBT1LE-63 2P AC 230V 63A 30mA 6KA Residual Current Circuit Breaker Earth Leakage Protection Can Turn Off RCCBNote : The blue one contains a switch turn on andturn off the leakage protectionThe Red one can't turn off the leakage protection NBT1LE-63 New Type Leakage Circuit Breaker-Toggle to Turn Off Leakage Function-Teie Electric Patented Product. This product is suitable for lines with AC 50/60Hz, rated working voltage 230V~400V and rated current to 63A. It is mainly composed of zero sequence current transformer, electronic component board, leakage circuit breaker, overload and short-circuit protection function, and can also increase overvoltage according to user's needs. Undervoltage protection function is used for indirect contact protection of people, and overcurrent protection for buildings and similar lines. It can also protect the fire caused by the ground fault that continues to exist due to the over-current protection device not operating. The leakage circuit breaker with overvoltage protection can also protect the over-high voltage caused by power grid failure. NBT1LE new leakage circuit breaker has been increasingly used as backup protection for ground fault, direct contact and indirect contact shock in low voltage distribution system. This product is mainly used for the protection of building lighting and powerdistribution systems and meets the requirements of GB16917.1 and IEC61009-1 standards.