LELK1-1RS4-30452-45 is a single-pole hydraulic magnetic circuit protector from the LEL series designed for DC power switching and circuit protection in international applications. The device features a panel thickness of 0.062 ± 0.005 inches (1.57 ± 0.13 mm) and a dimension A of 0.760 ± 0.007 inches (19.30 ± 0.18 mm) for single-pole configuration. It supports multiple current ratings ranging from 0.20 A to 150 A with corresponding DC resistance values and AC impedance characteristics at 50/60 Hz and 400 Hz frequencies. The protector offers selectable delay characteristics (51, 52, 53, 59 for DC; 61, 62, 63, 69 for AC 50/60 Hz; and 41, 42, 43, 49 for AC 400 Hz) to accommodate various trip time requirements. This circuit protector is suitable for equipment requiring reliable low-cost power switching and accurate circuit control with VDE approval to VDE 0660, part 101.