IULNK400-2REC4-31938-2 is a hydraulic magnetic circuit protector from the IAL/IUL/IEL/LEL series, designed to provide low-cost power switching, reliable circuit protection, and accurate circuit control. The device features multiple delay curve options and supports various voltage and frequency configurations including DC and AC at 50/60Hz or 400Hz. Available in 1, 2, or 3 pole configurations with panel mounting options and panel thickness of 0.062 ± 0.005 inches (1.57 ± 0.13 mm). These circuit protectors are suitable for equipment in the international marketplace where compliance with UL 1077 or VDE 0660 standards may be required.