Current and future high-voltage on-board power supply systems require reliable, robust and safe power distribution due to their ever-increasing complexity. The use of high-voltage splices and high-voltage power distributors to reduce possible sources of error and thus to optimize weight, installation space and EMC is a key to success in such high-voltage architectures. LEONI uses single and multi-core cables with low contact resistances for EMC shielding and for high-voltage connections. With one input and two outputs, the LEONI Y-splice in hybrid and electric vehicles, for example, enables direct power supply to the auxiliary units. This component is small, lightweight and cost-effective and enables efficient expansion of the high-voltage network.