RW-12 series outdoor AC high-voltage drop fuse protectors are single-phase outdoor unit of power system of AC frequency 50Hz and AC voltage 10KV, used as short circuit protector and overload for distribution line and distribution transformer. They can also break or close no-load transformer, no-load circuit and small load current.

HRW-12 type fuse protectors are made of silicon rubber composite insulator that with excellent hydrophobic, fire retardancy, corrosion-proof and anti-ageing resistance and it is light-weighting and insulative, which can effectively prevent the pollution flashover accidents.