Unknown object in panel.

Does anyone know what this is? It attaches to both lags, and the ground. It fits inside the panel, which happens to be a split bus panel.

I don’t need to know.

It is installed in the lugs intended for a single wire.

Nuff said.

Recommend removal or relocation by qualified persons.

It is probably a bypass/spike filter.

Lightening/spike suppressor.
I write them up like ML wrote, but no one wants to remove them.
Don’t know if they work or not.