Engineers could craft them under the Electrician talent tree, which would give them a recipe to install fuses in junction boxes. A fuse would be a disposable item that upon use, will be installed in that specific junction box. It will provide 30 full seconds (Possibly increased with quality bonuses? 3 seconds longer per quality level?) worth of overvolt protection (Or take damage based on the amount of power over the damage threshold) and then it will disappear once broken, making a crackling sound effect to alert the engineer to replace the blown fuse. I assume the recipe would consist of steel, copper and wires. Only people with high electrical skill (50 or above) will be able to safely install fuses, others may shock themselves like any other electrical skillcheck.
Honestly, it feels stupid that Europans have nuclear powered submarines and weapons, yet they have forgotten the existence of a fuse to the point where their junctions regularly become fried due to the issue.