The Schneider Electric WATSNB‑63/50 .4CBR is a dual power automatic transfer switch (ATS) designed for three‑phase low‑voltage power distribution systems. It provides reliable automatic or manual switching of electrical loads between two independent AC sources — such as utility mains and a standby generator — to maintain uninterrupted power for critical loads. The 4‑pole configuration switches all three phase conductors (L1, L2, L3) and neutral (N), allowing complete electrical isolation and enhanced safety. The switch continuously monitors both power sources and initiates transfer when a preferred source fails or is restored. Integrated auxiliary contacts offer remote status indication and interface with control or monitoring systems. A safety interlock mechanism prevents both sources from being connected simultaneously, improving operational safety.
