IELK1-1-52-100.-01-V is a VDE-approved single-pole hydraulic magnetic circuit protector from the IEL/LEL series, designed for reliable circuit protection and power switching in international applications. This device features a DC long delay (52) characteristic with a 100A current rating and stud terminals (K designation) for secure connections. At 100A rated current, the unit exhibits a nominal DC resistance of 0.00135 ohms when stabilized. The circuit protector provides inverse time-current trip characteristics, with no trip at 100% rated current and trip times of 2 to 60 seconds at 125% overload. Common applications include equipment requiring precise overcurrent protection with time-delay characteristics, particularly in harsh environments where VDE compliance is required.