Specifications General Product Type: Automatic Transfer Switch (ATS) / Dual Power Transfer Switch Series: WATSGA series Model: WATSGA‑125/4R Number of Poles: 4 (three phases + neutral) Rated Current: 125 A Application: Automatic switching between two independent AC power sources for three‑phase systems Electrical Ratings Rated Operational Voltage: Suitable for low‑voltage three‑phase AC systems, typically ~400 V AC Rated Frequency: 50 Hz AC (standard) Control Mode: Automatic and manual transfer modes Phase Configuration: Three‑phase with neutral Operational Features Automatic Source Monitoring: Continuously monitors voltage and phase conditions on both primary and secondary sources Automatic Transfer: Automatically switches load to backup source when primary source fails or is outside set thresholds Manual Override: Allows manual control and transfer when automatic mode is disabled Status Indication: Visual indicators or control panel status for source condition and switch position Protection & Safety Isolation: Provides full electrical isolation of load from a de‑energized source Built‑in Safety Logic: Ensures safe transition between power sources Fail‑Safe Operation: Prevents improper switching during unsafe conditions Mechanical & Installation Mounting: Panel or distribution board mounting Connection Terminals: Screw/clamp connection terminals for supply and load wiring Housing: Durable enclosure suitable for indoor electrical installations Operating Environment: Designed for commercial and industrial power distribution environments