European Fuses & Accessories - Altech Corp Electrical wiring regulations usually define a maximum fuse current rating for particular circuits. Short circuit, overload, off-balance loads and device failure are the prime reasons for fuse in the circuit design. A fuse automatically removes power from a faulty system. Application categories and time-current characteristics for Altech Fuses: The.. Tesla Model S (Europe) Fuse box diagrams & schemes If Model S is equipped with the cold weather option, an additional fuse box (4) is located under the driver’s side trim panel. Access to fuse box 4 requires removal of several components that must be performed by a Tesla service technician.