High voltage apparatus, FN13-2,FN3-12 、FN3-12R 、FN3-12R/S load switch indoor device. Used in AC 50Hz, 6KV or 12KV network, as the breaking and closing load and over load current, and is also used for the breaking and closing no-load long line. Switching no-load transformer and capacitor. The load switch with RN3 type fuse (FN3-12,FN3-12R/S ）can be cut short circuit protection, as the.
The load switch can be used for manual operation mechanism of CS3 type and CS2 type operation.