Grounding trunk limiter

The utility model relates to a grounding main line limiter comprising a vertical plate which comprises a first vertical plate, a second vertical plate and a third vertical plate which are arranged side by side. The transverse plates comprise a first transverse plate and a second transverse plate, the first transverse plate is fixedly arranged at the top ends of the first vertical plate and the second vertical plate to form a first space, and the second transverse plate is fixedly arranged at the bottom ends of the second vertical plate and the third vertical plate to form a second space for placing a grounding main line; the connecting assembly comprises a first connecting piece and a second connecting piece, the first connecting piece is arranged on the first vertical plate, and the second connecting piece is movably connected to the third vertical plate. The device is simple in structure and convenient to use, can be suitable for grounding main lines of different specifications, andhas the characteristic of