The ABB OTM100F4C12T380C is a 4‑pole motorized change‑over and automatic transfer switch (ATS) designed to automatically switch 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 motorized automatic operation and manual override via a handle. Mechanical interlocks ensure safe isolation of the two power sources, preventing simultaneous connection. The switch is suitable for industrial and commercial installations where continuity of power is critical.
