Siemens HF361S is a heavy duty fusible disconnect switch designed for low voltage circuit protection in demanding industrial environments. This 30A, 600VAC, 3-pole switch features a NEMA 4X 304 grade stainless steel enclosure for harsh conditions, weighs 17.637 lb, and measures 20.079 x 11.417 x 7.874 inches. It offers a double break visible blade design for clear ON/OFF indication and supports up to 200kA interrupting capacity at 600V with Class R fuses. The switch is UL listed under file E4776, meeting UL98 and UL50 standards, and is suitable for use as service entrance equipment. Typical applications include industrial power distribution and motor control centers requiring reliable, high-interrupting-capacity disconnection.