IUGN1-1REC4-72-10.0 is a single-pole hydraulic magnetic circuit protector from the IUG series, designed for reliable circuit protection and power switching applications. It features an internal configuration with auxiliary switch using 110 quick connect terminals, operating at 50/60Hz with delay curve 72 (long delay) and a rated current of 10.0A. The delay 72 characteristic provides pulse tolerance of approximately 10 times rated current, with trip times ranging from 1.8 to 100 seconds at 125% of rated current and no trip at 100% rated current. This circuit protector is trip-free, meaning it will trip open on overload even when forcibly held in the ON position. It is suitable for equipment requiring IEC and VDE compliance, offering low-cost power switching with accurate circuit control for international marketplace applications.