OTM400E4C11D380C 4P 400A_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 OTM400E4C11D380C Number of Poles 4 poles (three phases + neutral) Rated Operational Current 400 A Rated Insulation Voltage (Ui) 1000 V AC Impulse Withstand Voltage (Uimp) 12 kV Rated Operational Voltage Up to 1000 V AC Rated Short‑Time Withstand Current ~15 kA for 1 s Rated Operational Power (AC‑23A) Approx. 220 kW @ 400 V; higher at elevated voltages Control / Motor Supply Voltage 380 V AC (motor operator supply) Transition Type Open transition change‑over Operating Modes Automatic motorized and manual handle operation Mechanical Interlock Yes — prevents simultaneous source connection Mounting Panel or enclosure mount Typical Use Automatic transfer between utility mains and backup generator in three‑phase distribution systems

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DESCRIBE

The ABB OTM400E4C11D380C 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 standby generator, in low‑voltage three‑phase distribution systems. This type of switch provides motorized automatic operation for seamless source changes and also has provision for manual operation in emergency or maintenance situations. A built‑in mechanical interlock prevents the two power sources from being connected simultaneously, ensuring safety and continuity of power in industrial and commercial environments. It is suitable for medium to large power distribution systems where reliable source switching is required.

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