LELK1-1RS4-30452-70 is a hydraulic magnetic circuit protector from the LEL series designed for reliable circuit protection and power switching in international applications. This single-pole unit features an alarm switch configuration (-1RS4) with VDE approval to VDE 0660, part 101, and is rated for DC voltages up to 300V and AC voltages up to 480V at 50/60 Hz. The device supports current ratings from 0.02 to 100 amps with selectable delay characteristics (41, 42, 43, 49, 51, 52, 53, 59, 61, 62, 63, 69, 71, 72, 73, 79) to accommodate various protection requirements. It features stud or screw terminal options with standard mounting dimensions and is supplied with appropriate fasteners and washers. The protector is ideal for equipment requiring accurate circuit control, low-cost power switching, and compliance with international standards in industrial and commercial applications.