The IUGN6-1-52-15.0 is a single-pole hydraulic-magnetic circuit protector designed for reliable overcurrent protection and power switching. It is rated for 15.0 amperes and features a series trip configuration with a DC long delay (curve 52), making it suitable for loads with moderate inrush currents like motors or transformers. The unit's sealed toggle switch with a bushing mount ensures panel seal integrity for use in harsh environments. This protector is trip-free, meaning it will trip on an overload even if the handle is held in the ON position, and operates reliably across a wide temperature range from -40°C to +85°C. Its precision and insensitivity to ambient temperature make it ideal for data processing, medical, and military applications.