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WATSN16/4A

The Schneider Electric WATSN16/4A Automatic Transfer Switch (ATS) is a dual-power transfer switch designed for three-phase AC systems to automatically or manually switch between two independent power sources (such as utility mains and backup generator).

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Parameters Parameter Specification Product Name Schneider Electric WATSN16/4A Transfer Switch Product Type Automatic Transfer Switch (ATS) / Dual Power Transfer Switch Series WATSN Series PC Level Number of Poles 4P (Four Poles) (three phases + neutral) Rated Current (Ie) 16 A (transfer switching current rating) Rated Operational Voltage (Ue) 380–415 V AC (50/60 Hz) for 4-pole three-phase application Rated Insulation Voltage (Ui) ~800 V AC typical for WATSN series Rated Impulse Withstand Voltage (Uimp) ~8 kV (standard withstand voltage) Utilization Category AC-33B (switching and isolation operation on motors and power circuits) Frame/Conventional Thermal Current (Ith) 16 A (conventional ambient thermal current) Control Type Basic controller (Type A) with options for manual/automatic/remote operation modes Operating Mode Options Automatic transfer and return, automatic transfer without return, mutual standby (varies by controller configuration) Standards Compliance IEC 60947-6-1 (transfer switching equipment) Mechanical Durability ~10 000 operations (typical PC class) Electrical Durability ~6 000 operations (without external protections)