RNP-300 is a mobile service unit developed for efficient refilling of sandboxes in railway vehicles, including locomotives, multiple units, and maintenance rolling stock. Sand plays a critical role in improving traction, particularly during braking and acceleration in adverse weather conditions such as rain, snow, or icy surfaces. This system allows maintenance teams to replenish sand supplies quickly and effectively directly along the railway network.

 

 

Its mobility enables deployment at depots, service points, and trackside locations, ensuring operational readiness of rolling stock without requiring complex logistical arrangements. The unit supports preventive maintenance programs by ensuring that traction systems remain fully functional, contributing to safe and reliable railway operations. By enabling efficient on-site servicing, RNP-300 helps reduce downtime and supports continuous fleet availability.