High-Voltage Current-Limiting Fuse Detail: It can be used indoor system of 50HZ and rated voltage of 3.6KV, 7.2KV,12KV,24KV,40.5KV:Used together with other switch facilities such as loading switches, vacuum contactors, it can protect electric transformers and other electric facilities against overloading or circuit break. It is also a necessary accessory for high-voltage switch. Technical Parameter General selection guideline of fuse for protecting 12 KV transformer in the following table.Note: selection for transformer 7.2 kV or anther electric equipments contact the manufacturer please.