The ABB OTM160E3C10D380C is a 3‑pole motorized automatic transfer switch (ATS) / change‑over switch designed to transfer electrical loads between two independent AC power sources — typically from the utility mains to a backup generator — in three‑phase low‑voltage power distribution systems. It is part of ABB’s range of motorized change‑over switches, which provide reliable automatic switching using a motorized operator as well as manual override via a handle. A mechanical interlock ensures that both power sources remain isolated and cannot be connected simultaneously, improving safety and system protection. The switch is suitable for industrial, commercial, and other environments where continuity of power and safe source change‑over are essential.