OTM800E3C21D380_ABB_PRODUCT_吉林易择科技技术发展有限公司

Technical Parameters Specification Typical Value / Description Product Type Motorized Automatic Transfer Switch / Change‑Over Switch Model OTM800E3C21D380C Number of Poles 4 poles (3 phases + neutral) Rated Operational Current 800 A (class rating) Rated Operational Voltage Up to 1000 V AC main circuit Rated Insulation Voltage (Ui) 1000 V AC Impulse Withstand Voltage (Uimp) ~12 kV Rated Short‑Time Withstand Current (1 s) ~20 kA Rated Operational Power (three‑phase) Approx. 450 kW @ 380–415 V Control / Motor Supply Voltage 380 V AC Transition Type Open transition change‑over Operating Modes Automatic motorized operation and manual handle override Mechanical Interlock Yes — prevents simultaneous connection of sources Mounting Panel or enclosure mount Typical Applications Automatic transfer between mains and backup generator in industrial/commercial three‑phase systems

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DESCRIBE

The ABB OTM800E3C21D380C is a 4‑pole motorized automatic transfer switch (ATS) / change‑over switch 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 power distribution systems. This switch is part of ABB’s OTM series of motorized change‑over devices and is built for robust, high‑current applications. It supports motorized automatic operation and also allows manual override via a handle. A mechanical interlock ensures the two power sources remain isolated and cannot be connected simultaneously, enhancing safety during transfer events. The device is suitable for industrial, commercial, and critical‑power installations requiring high‑current source switching.

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