IELK1-1-72-5.00-01-V is a single-pole hydraulic magnetic circuit protector manufactured by Airpax/Sensata, designed for reliable circuit protection and power switching in international applications. The unit features a DC long delay (delay code 72) operating characteristic with a rated current of 5.00 amperes, providing accurate trip time control across various overload conditions. It is equipped with a black toggle handle with white markings (marking code -01) and stud terminals (K designation), and is VDE approved for compliance with VDE 0660 part 101 standards. The device exhibits no trip at 100% rated current, with trip times ranging from 1.8 to 100 seconds at 125% current, 1.7 to 60 seconds at 150% current, and progressively faster response at higher overload levels. This circuit protector is ideal for equipment requiring precise, delayed protection in DC applications, particularly in industrial control systems and power distribution where both reliability and compliance with international standards are essential.