Insulated open trolleys are a robust solution for efficient and safe transmission of electrical power to mobile applications. Thanks to high-quality materials and IP23 protection, they provide a high degree of protection against touch. These systems, with different current capacities, ensure reliable power supply for high-speed equipment operating in harsh environmental conditions. High-quality collectors allow easy control and exchange of carbons, which ensures a high degree of reliable and trouble-free operation of the powered appliance.