The Spelsberg GTi empty housings are also available with built-in operating equipment. Thus an empty housing becomes a GTV socket housing. High-quality Schuko® socket outlets with protective contacts are used, the number of which can vary depending on customer requirements. Built-in socket outlets are pre-wired up to the standard rail. Combinations of CEE 16 A socket outlets with CEE 63A socket outlets are possible. Spelsberg socket housings withstand a rated insulation voltage of AC 690 volts and DC 1000 volts. The particularly robust polycarbonate material used makes it suitable for use in industrial environments.