The ABB OTM200E4C10D380C is a 4‑pole motorized automatic transfer switch (ATS) / change‑over switch designed to transfer electrical loads between two independent AC power sources, such as utility mains and a standby generator, in three‑phase low‑voltage distribution systems. It belongs to ABB’s OTM series of motorized change‑over switches, which provide safe and reliable automatic switching via a motor operator and also support manual override via a handle. The switch incorporates mechanical interlocks to prevent both power sources from being connected simultaneously, ensuring safety during transfer operations. This type of device is commonly used in industrial, commercial, and critical power applications where continuity of power is essential.
