Earthing and short-circuiting device set according to DIN0683-100 (EN/IEC 61230) for earthing and short-circuiting transformers on overhead line masts according to DIN0105-100 (EN 50110). Includes telescopic earthing rod and two single-pole earthing and short-circuiting devices, 4 m long, with universal clamps, spindle with cross pin and handle.