The LELK1-1REC4-52-80.0-A-01-V is a hydraulic magnetic circuit protector designed for reliable circuit protection and power switching in international applications. This two-pole device operates at 80.0 A rated current with a 52 DC long delay characteristic, providing extended protection suitable for transformer and capacitor loads. It features a 1REC4 auxiliary switch configuration for enhanced control flexibility and is equipped with a black rocker handle with white markings (marking code -01) for vertical or horizontal mounting. The unit is VDE approved to VDE 0660, part 101, and meets IEC 950 and IEC 601 standards for use in equipment requiring installation Category III and Pollution Degree 3 protection. Common applications include industrial power distribution, equipment protection, and control systems where accurate circuit control and reliable switching are essential.