Siemens HNF365SA is a non-fusible disconnect switch designed for providing a visible break and safe isolation in three-phase industrial power circuits. It is rated for 600V AC systems with a continuous current capacity of 400A and features a high interrupting rating of 200kA at 600V for robust short-circuit protection. The switch is constructed within a durable NEMA 4X enclosure measuring 7.087" x 22.047" x 33.465" (180mm x 560mm x 850mm) and weighing 75.156 lb, ensuring protection against corrosion and weather for outdoor or harsh indoor use. It is UL listed and operates reliably across a wide temperature range from -25°C to 70°C (-13°F to 158°F). This device is typically applied in industrial control panels, motor control centers, and as a main disconnect for machinery and heavy equipment.