LMLK1-1RS4-29172-10 is a single-pole hydraulic magnetic circuit protector with mid-trip indication and rocker handle designed for reliable circuit protection and power switching in international applications. The unit features a series configuration with auxiliary switch (1RS4 designation) and is approved to VDE and CCC standards. It operates at 29.172 amps nominal current rating with a panel mounting thickness of 0.062 ± 0.005 inches (1.57 ± 0.13 mm) and a mounting dimension of 0.760 ± 0.007 inches (19.30 ± 0.18 mm). The protector provides accurate circuit control with selectable delay characteristics and is suitable for equipment requiring both low-cost power switching and compliant circuit protection across multiple voltage and frequency standards.