OTM250E4C3D220C_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 (ATS) / Change‑Over Switch Model OTM250E4C3D380C Number of Poles 4 poles (three phases + neutral) Rated Operational Current 250 A Rated Insulation Voltage (Ui) ~1000 V AC Impulse Withstand Voltage (Uimp) ~12 kV Rated Operational Voltage Up to ~1000 V AC for main circuit Control / Motor Supply Voltage 380 V AC Rated Short‑Time Withstand Current ~8 kA for 1 s Rated Operational Power (AC‑23A) ≈140 kW at 400 V AC (higher ratings at elevated voltages) Operating Modes Automatic motorized change‑over and manual handle override Mechanical Interlock Yes — prevents simultaneous source connection Handle / Operation Type Direct mounted handle for manual operation Mounting / Installation Panel or enclosure mount Typical Application Automatic transfer between mains and backup generator in industrial and commercial power systems

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DESCRIBE

The ABB OTM250E4C3D380C 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. It is part of ABB’s OTM automatic transfer switch family, built to enable reliable and safe switching with motorized automatic operation and manual override via a handle. The device includes mechanical interlocks to ensure that the two power sources remain electrically isolated and cannot be connected simultaneously, minimizing risk during transfer operations. This switch is suitable for industrial, commercial, and critical power installations where continuity of power and safe source change‑over are needed.

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