🔹 WATSN Automatic Transfer Switch – NA02503V (250A, 3 Pole, Type A, Under/Over Voltage Protection)
The WATSN NA02503V Automatic Transfer Switch (ATS) is a robust and reliable dual-power transfer switch designed for automatic changeover between the main utility power source and a standby generator or alternate power source.
Featuring a 250A rated current, 3-pole configuration, and a Type A intelligent controller, the NA02503V continuously monitors the incoming power supply and automatically transfers the load whenever under-voltage, over-voltage, or power failure conditions occur. This ensures uninterrupted power availability for critical electrical systems and equipment.
Built with Class PC transfer switch technology, the WATSN ATS offers high switching reliability, compact construction, and long operational life. Its advanced control system and protective functions make it ideal for commercial buildings, industrial facilities, telecom networks, hospitals, and data centers where continuous power supply is essential.
• Genuine WATSN Automatic Transfer Switch
• Model: NA02503V
• Rated Current: 250A
• 3-Pole configuration
• Type A intelligent controller
• Under-voltage and over-voltage protection
• Automatic utility-to-generator transfer
• Class PC transfer switch mechanism
• Open transition switching operation
• Fast and reliable transfer performance
• Compact panel-mount design
• IEC 60947-6-1 compliant
• Long mechanical and electrical life
| Parameter | Specification |
|---|---|
| Product Type | Automatic Transfer Switch (ATS) |
| Model Number | NA02503V |
| Series | WATSN |
| Rated Current (Ie) | 250A |
| Number of Poles | 3 Pole |
| Controller Type | Type A |
| Protection Function | Under & Over Voltage Protection |
| Transfer Switch Class | PC Class |
| Utilization Category | AC-33B |
| Rated Voltage | 380–415V AC |
| Frequency | 50/60 Hz |
| Transfer Type | Open Transition |
| Operating Positions | Source I – OFF – Source II |
| Mounting Type | Panel Mounted |
| Standard | IEC 60947-6-1 |
| Application | Utility–Generator Changeover |
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