NH1 series isolating switch is suitable for AC 50Hz, rated working voltage to AC400V, AC690V, rated working current to 4000A and below. In distribution network, it is mainly used to indirectly connect and disconnect circuit and isolate power supply. . The isolating switch can be widely applied to power distribution systems of power stations, factories, mines, and modern high-rise buildings, and is also widely used in green energy projects such as wind power generation and solar power generation. Meet the standards: GB/T14048.3, IEC 60947-3.