Square D by Schneider Electric DU321RB is a non-fusible general‑duty safety disconnect switch rated 30 A at 240 VAC, with three poles (3P) and a NEMA 3R weather‑resistant enclosure. Built for commercial and industrial use, it provides a manual means to isolate a 3‑phase circuit and is commonly used as a service disconnect or motor feeder switch in outdoor or harsh environments. The enclosure is typically galvanized steel, and many listings indicate a bolt‑on hub is provided for conduit entry. This 240 V, 30 A, 3‑pole device is designed for safe, code‑compliant shutdown of non‑fusible loads in 3‑phase systems.
