The Schneider Electric WATSNB‑63/20 .4CBR is a dual power automatic transfer switch (ATS) designed for three‑phase low‑voltage power distribution systems. It enables reliable switching of the load between two independent AC power sources (such as utility mains and a backup generator) to maintain continuity of electrical supply for critical loads. The device automatically detects loss or return of the primary source and transfers the load to the alternate source.
