The Schneider Electric WATSNB‑160/125 .3CBR is a dual power automatic transfer switch (ATS) designed for three‑phase low‑voltage power distribution systems. It provides reliable and safe switching of a three‑phase electrical load between two independent AC power sources, such as utility mains and standby generator. The device automatically detects loss or return of the primary power source and transfers the load to the alternate source to maintain continuity of service for critical loads.