German vehicle/tank switchbox thing?

[Admiraal]

Hey, i found this in a german forrest some days ago, a friend said it could be from a tank/vehicle,
that could be right because in that area 3 halftracks and 1 panther were destroyed.
Could also be from a bunker... but what does it do in a forrest?
Oh btw, i removed the stuff that was in it to clean it a bit.

[mfh7200]

It looks like a 3 way switch box for a 500 volt electrical line. It is probably for a bunker.