IULNK1-1-52-80.0 is a single-pole hydraulic magnetic circuit protector designed for DC long-delay circuit protection applications. The device features a screw terminal configuration with mounting dimensions of 2.060 inches (52.32 mm) width and 1.940 inches (49.28 mm) height, and includes 2X 6-32 thread mounting inserts at 0.140 inches (3.56 mm) deep. It is supplied with a 10-32 screw terminal, flatwasher, and external tooth lockwasher per terminal. The circuit protector meets MIL-PRF-55629 requirements for salt spray corrosion and moisture resistance, and shall not trip when subjected to shock per MIL-STD-202 Method 213 with 100% rated current applied to delayed units. This device is ideal for reliable circuit protection and accurate circuit control in international equipment applications requiring low-cost power switching.