IELHK111-1-72-30.0-01-V is a three-pole hydraulic magnetic circuit protector from the IEL series, designed for reliable power switching and circuit protection in international applications. This VDE-approved device features a 30.0 amp current rating with delay curve 72 (DC long delay), providing time-current characteristics that prevent nuisance tripping while ensuring protection against overcurrent conditions. The three-pole configuration (111) includes stud terminals (K designation) and operates with an internal mechanical interlock for simultaneous actuation of all poles. The unit has a maximum width of 2.265 inches (57.53 mm) and is suitable for panel mounting applications. Common applications include industrial equipment, power distribution systems, and control panels where accurate circuit control and compliance with VDE 0660 standards are required.