The ABB OTM40F4C12D380C6-1 is a 4‑pole motorized change‑over and automatic transfer switch (ATS) designed to automatically transfer electrical loads between two independent AC power sources (such as utility mains and a backup generator) in three‑phase low-voltage distribution systems. It supports both motorized automatic operation and manual override via a handle. Mechanical interlocks prevent both power sources from being connected simultaneously, ensuring safe and reliable switching. This switch is suitable for industrial and commercial installations where continuity of power is critical.
