It is Electronic type in nature. The highlight here is that: 1.Type -A: Protects against special forms of residual pulsating DC which have not been smoothed. 2.Provides protection against earth fault/leakage current, short-circuit, overload, and function of isolation. 3.Provides complementary protection against direct contact by human body Effectively protects electric equipment against insulating failure. 4.Provides comprehensive protection to household and commercial distribution systems. 5.L Pole and N pole Both have the overload protection. 6.High breaking capacity up to 10KA ,more secure.