The Fuse box is an electrical object from Secret files tunguska.
With it you can come in Max Grubers Office. But its locked, so you need the Key for the Fuse box from the Museums hall.
Talk with Max[]
Nina: I'll just turn Max Gruber's blaring music down to a bearable level.
(Nina turn out the electricity)
Max Gruber: Aaaargh! And I didn't save ... What a mess. Redoing all of that work is gonna take hours.
Nina: Mr. Gruber, please! Let me in! I need to talk to you!
Max: Hmm? What? Hold on, just a sec ...