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WATSG125/4A

The Schneider Electric WATSG125/4A Automatic Transfer Switch (ATS) is a PC‑class dual‑power transfer device designed to automatically switch electrical loads between two AC power sources to ensure uninterrupted power supply. It is typically a 4‑pole switch rated for 125 A continuous current in low‑voltage 3‑phase systems

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Specifications Parameter Specification Product Name Schneider Electric WATSG125/4A Automatic Transfer Switch Series / Model WATSG Series ATS Device Type Automatic Transfer Switch (ATS), PC Class Poles 4P (3 phases + neutral) Rated Current (In) 125 A AC (continuous) ◆ Rated Operational Voltage (Ue) ~380 V / 400 V AC, 50/60 Hz (typical three‑phase networks) ◆ Network Type AC (three‑phase) ◆ Standards Compliance IEC 60947‑6‑1 (AC transfer switch standard) ◆ Transfer Modes Automatic / Manual / Auto‑restore / Mutual standby ◆ Operation Logic Types Type A (basic) or extended controllers supporting generator/commercial source transfers and communication options ◆ Short‑Circuit Withstand Capability Varies with product frame and upstream protection (e.g., high breaking capacity, PC class) ◆ Insulation Voltage (Ui) ~690 V AC nominal (dependent on variant) ◆ Impulse Withstand Voltage (Uimp) Typical 6–8 kV ◆ Auxiliary Contacts / Alarms Optional signals for unsuccessful transfer and status indication available ◆ Mounting Panel or enclosure fixed mounting (DIN rail or flange depending on variant) ◆ Typical Applications Mains ↔ generator power switching, critical load power continuity, industrial/commercial power distribution