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WATSN160B/4A

The Schneider Electric WATSN160B/4A Automatic Transfer Switch (ATS) is a four‑pole changeover device used in low‑voltage AC power systems to ensure continuity of electrical supply. It performs automatic and manual switching between two independent power sources, such as a utility mains and a standby generator, to maintain uninterrupted power to connected loads during supply disturbances.

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Parameters Parameter Specification Product Name Schneider Electric WATSN160B/4A Automatic Transfer Switch Device Type Automatic Transfer Switch (ATS) Series WATSN Number of Poles 4 Poles (three phases + neutral) Rated Operational Current (Ie) 160 A Rated Operational Voltage (Ue) 400 VAC, 50/60 Hz Network Type AC three‑phase Rated Insulation Voltage (Ui) ~800 VAC Rated Impulse Withstand Voltage (Uimp) ~8 kV Utilization Category AC‑33B for switching motor and resistive loads Switching Class PC class transfer switch Contact Position Indication Yes Mechanical Interlocking Yes Control Type Basic automatic transfer logic Mounting Mode Rack‑ or panel‑mounted Connection Type Screwed (bottom and top) Short‑Circuit Making Capacity (Icm) ~17 kA Rated Short‑Time Withstand Current (Icw) ~10 kA for 60 ms Mechanical Durability ~10 000 cycles Electrical Durability ~6 000 cycles Isolation Capability Provides full isolation in OFF position Typical Applications Power continuity and backup systems in industrial and commercial installations