LELK1-1RS4-30452-5 is a hydraulic magnetic circuit protector from the LEL Series, designed for low-cost power switching, reliable circuit protection, and accurate circuit control in international marketplace applications. This single-pole unit features an alarm auxiliary switch (-1RS4 Series) and is VDE approved to VDE 0660, part 101. The circuit protector offers panel mounting with a cutout dimension of 0.760 ± 0.007 inches (19.30 ± 0.18 mm) for single-pole configuration and supports panel thickness of 0.062 ± 0.005 inches (1.57 ± 0.13 mm). Common applications include equipment requiring combined power switching and overcurrent protection with auxiliary alarm signaling capability.