IUGH666-1-41-30.0-01 is a single-pole hydraulic magnetic circuit protector from the IUG series, designed for low-cost power switching, reliable circuit protection, and accurate circuit control. This device features a 30.0 amp current rating with delay curve 41, providing trip times ranging from 0.500 to 8.0 seconds at 150% rated current and 0.004 to 0.05 seconds at 1000% rated current. The unit includes a black toggle handle marked with ON-OFF I-O designation. Hydraulic magnetic circuit protectors in this series are available in series, shunt, or relay configurations and are suitable for equipment requiring compliance with international specifications.