The IULZXK1-1-52-30.0-GK-B3 is a single-pole hydraulic magnetic circuit protector from the IAL/IUL/IEL/LEL series designed for reliable circuit protection and power switching in international applications. This device is rated for 30.0 amperes with delay characteristic 52, providing trip time performance of 2 to 60 seconds at 125% rated current, 1.8 to 30 seconds at 150% rated current, and progressively faster response at higher overload levels (1 to 10 seconds at 200%, 0.15 to 2 seconds at 400%). The unit features a nominal DC resistance of 0.003 ohms and AC impedance of 0.004 ohms at 50/60 Hz, with panel mounting dimensions of 0.760 ± 0.007 inches (19.30 ± 0.18 mm) width and 0.062 ± 0.005 inches (1.57 ± 0.13 mm) panel thickness. These protectors are ideal for equipment requiring low-cost, accurate circuit control with inherent reliability in power distribution, motor control, and load switching applications across diverse voltage and frequency ratings.