The Schneider Electric WATSNB‑100/80 .3CBR is a dual power automatic transfer switch (ATS) designed for three‑phase low‑voltage power distribution systems. It enables reliable switching of a three‑phase electrical load between two independent AC power sources (such as utility mains and a backup generator) to maintain continuous power supply for critical loads. The device continuously monitors both incoming sources and automatically transfers the load when one source fails or is restored. The 3‑pole design switches only the three phase conductors (L1, L2, L3) and does not switch the neutral, making it suitable for systems where neutral transfer is not required. Auxiliary contacts provide remote status indication and interface to control systems. A mechanical/electrical interlock prevents both sources from being connected simultaneously, enhancing safety.
