Hi,
The same could be done using the microswitches and as per requirement the position of the switch could be adjusted to vary the arcing of the arm of the child.
The supply system in spain i believe is 380V 50Hz i.e. 220V AC single phase. The electrical equipments usually are manufactured for the voltage variation of +/- 10% & fequency of +/- 5%. If your supply system exceeds this value then the equipment might get overheated and may be damaged over long...